mv pfc - metal enclosed - eaton

Metal-Enclosed Medium Voltage Power Factor Correction

and Harmonic Filter Systems

Technical Data TD02607011E

Effective November 2008Supersedes August 2005

Contents

Medium Voltage Power Factor CorrectionProduct Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1

Application Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2

Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2

Univar XV (2.4 kV to 4.8 kV)Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3


3

Features, Benefits and Functions . . . . . . . . . . . . . . . . . . . . . .

3

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6

Univar MV (6.6 kV to 13.8 kV)Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7


7


7

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8

Autovar MV (2.4 kV to 14.4 kV)Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9


9

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17

Metal-Enclosed Medium Voltage Power FactorCorrection System

Product Description

Eaton’s Cutler-Hammer

T

metal-enclosed medium voltage capacitors, systems and harmonic filters are designed for indoor or outdoor commercial, industrial and utility power systems requiring motor start support, power factor correction, harmonic filtering, IEEE 519 compli-ance, and increased system capacity. Fixed motor start capacitors are available to assist in motor starting applications. Engineered designs are available with a host of options and accessories to fit the require-ments and desired configurations of virtually any installation. Single-stage and multi-stage, tuned or de-tuned filter banks can be supplied. Metal-enclosed medium voltage capacitor banks are designed for industrial, commercial and utility power systems involving motors, feeder circuits, and transmission and distribution lines where power factor improvement is required.

TD02607011E.fm Wednesday, November 12, 2008 4:35 PM

2 EATON CORPORATION

PF Correction and Harmonic Filter Systems Technical Data TD02607011E Effective: November 2008

Safety and Aesthetics are Just Two Compelling Reasons to Utilize Metal-Enclosed PFC Systems

Application Description

Utility Customers

Metal-enclosed power factor correction systems are fully assembled, tested and ready for installation. Very little field assembly is required. Installation and maintenance costs for metal-enclosed systems are low compared to pole and rack mounted capacitor banks. Metal-enclosed systems and harmonic filters are less vulnerable to wildlife and airborne contaminants that can cause tracking and faults. In addi-tion, metal-enclosed systems significantly reduce the risks and the associated liability involving untrained personnel. All live parts are contained in a grounded, key interlocked enclosure and no internal hardware is accessible. Metal-enclosed systems are aesthetically pleasing due to their low profile, and can be painted to match the surrounding architecture. These are just some of the reasons more and more utilities are utilizing metal-enclosed capacitor and harmonic filter systems.

Industrial Customers

Large industrial power users can utilize the benefits associated with medium voltage power factor correction and harmonic filtering. Medium voltage solutions usually support the scale and scope of larger services. Medium voltage applications can be found in the fol-lowing types of industries as examples: automotives, pulp and paper, plastics, petrochemical, and heavy manufacturing. Individual fixed capacitors provide power factor correction directly at the cause of the problem, such as a large horsepower MV motor. Medium voltage sys-tems allow large industrials to correct power factor at or close to the point of common coupling (PCC), where the utility electrical system meets theirs. This allows correction for an entire facility, instead of having to correct at multiple locations. The Cutler-Hammer NEMA

T

3R design also allows the system to be placed outdoors, saving valu-able manufacturing floor space. The savings can be enormous, in materials, installation costs and floor space. In short, medium voltage solutions provide a cost-effective alternative to many local low volt-age power factor correction units, while protecting the customer’s entire electrical distribution system.

Commercial Customers

Many commercial customers are purchasing power from their utility at higher voltages today (2.4 kV – 15 kV), and can also take advantage of medium voltage power factor correction systems. These solutions can meet the needs of large office complexes, hospitals and universi-ties, among others. The benefits of safety (key interlocking, no exposed live parts, etc.), and aesthetics (low profile, can be painted to match environment) both meet the needs of these applications where there are large numbers of untrained personnel in proximity of electrical equipment.

Advantages

Eaton’s purchase of the Commonwealth Sprague capacitor systems business, with its over 70 years of market experience, provides a combination that allows the end user to obtain a world-class solution to fill their power factor needs. Quality and reliability are of paramount importance to not only the Eaton engineering team, but are also the backbone of all Eaton products and services. This commitment to quality means the customer can have a great deal of confidence with the medium voltage capacitor or harmonic filter solution from Eaton’s electrical business.

Benefits

Ease of Installation

Eaton makes installation easy. All systems are completely assembled in the factory, with all equipment pre-wired and pre-tested for easy on-site installation. Only shipping splits must be connected in the field. Splice kits connect bus systems, and control wiring is easily connected at each enclosure. Current limiting fuses, contactor assemblies, and the incoming switch assembly can be removed from the enclosure if needed. Line terminals are completely accessible from the front of the system.

Personnel Safety

Positive mechanical isolating switch with visible disconnect com-pletely grounds and isolates the unit from the line connectors. A screened barrier protects personnel from live parts. All medium volt-age doors are mechanically interlocked with the disconnect switch. Key interlocks are provided standard on all enclosure doors, and can be coordinated with upstream disconnect devices. The low voltage control section has a separate door-in-door design, and is segregated from the medium voltage sections so that an operator can work in that section safely.

Ease of Maintenance

All components are front-accessible, facilitating routine inspection or parts replacement. A viewing window is standard on all compartment doors.

Flexibility

Systems are expandable. The customer can add stages in the future by connecting the phase bus in the field via splice kits. Structures can be bolted together in the field.

Insulated Splice Kits Allow for Simple Interconnection in the Field


EATON CORPORATION

PF Correction and Harmonic Filter Systems Technical Data TD02607011E

©

Copyright 2008

3

Univar XV (5 kV Class)

Univar XV Fixed Medium Voltage PFC Unit

Product Description

Capacitors for medium voltage, heavy-duty applications:

●

Univar capacitors are designed for power factor correction in applications where a fixed amount of capacitance (kvar) is required.

●

2400 V, 4160 V, 4800 V.

●

Fast economical payback.

●

Individual units or multiple assemblies can be designed.

●

Indoor dustproof/outdoor waterproof enclosures (NEMA 12, NEMA 3R).

●

Floor mounting.

●

2- or 3-phase fused options for 2400 V – 4800 V.

●

NEMA 3R terminal box.

Note:

NEC

T

Article 460-8 (b)(1)requires capacitors to have overcur-rent protection in all ungrounded conductors (except if connected on the load side of a motor overload protection device). Three-phase capacitors fused only on two phases will not provide adequate pro-tection if a line-to-ground fault should occur in the unfused phase.


●

Large motors.

●

Motor control centers.

●

Branch circuits.

●

Service entrances.

Features, Benefits and Functions

Standard Features

Enclosure Terminal Box

14-gauge steel finished with durable baked-on enamel. The wiring enclosure is gasketed to create a weatherproof, dustproof seal. Universal mounting flanges are provided for floor installation. The elimination of knockouts permits indoor/outdoor use. Unit meets NEMA 1, 3R and 12 requirements. Enclosure is painted ANSI 61 gray.

Features

●

Viewing window.

●

Top and side entry.

●

Removable front cover.

Fusing

Fuses are rated 50,000 amperes symmetrical interrupting capacity. Ratings are 165% to 250% of rated current. Fuses have visual pop-up blown fuse indication standard.

Discharge Resistors

These reduce the residual voltage to less than 50 V residual within five (5) minutes of de-energization.

Grounding Stud

Standard.

Power Line Terminals

Large size for easy connection.

Operating Temperature

-40ºF (-40ºC) to 115ºF (+46ºC)

Optional Features

●

Two or three fuses.

●

CSA

T

testing and labels.

TABLE 1. UNIVAR THREE-PHASE RATINGS

VOLTS HERTZ KVAR

2400 60 25 – 825

4160 60 25 – 900

4800 60 25 – 900


4 EATON CORPORATION


Technical Data

TABLE 2. TWO-PHASE FUSED

Note:

To be used on un-grounded Delta systems or High-Resistance Grounded systems only.

Note:

Add suffix “C” for CSA label.

KVAR 2400 VOLT 4160 VOLT 4800 VOLTDIMENSION (A) INCHES (MM)

APPROX. WEIGHTLBS (KG) FIGURE NO.

25 25243MVF 25413MVF 25483MVF 34.44 (875) 70 (32) 150 50243MVF 50413MVF 50483MVF 34.44 (875) 70 (32) 175 75243MVF 75413MVF 75483MVF 34.44 (875) 70 (32) 1100 100243MVF 100413MVF 100483MVF 36.19 (919) 75 (34) 1125 125243MVF 125413MVF 125483MVF 36.19 (919) 83 (38) 1150 150243MVF 150413MVF 150483MVF 36.19 (919) 88 (40) 1175 175243MVF 175413MVF 175483MVF 36.19 (919) 93 (42) 1200 200243MVF 200413MVF 200483MVF 36.19 (919) 99 (45) 1225 225243MVF 225413MVF 225483MVF 41.94 (1065) 109 (49) 1250 250243MVF 250413MVF 250483MVF 41.94 (1065) 109 (49) 1275 275243MVF 275413MVF 275483MVF 41.94 (1065) 121 (55) 1300 — 300413MVF 300483MVF 41.94 (1065) 121 (55) 1300 300243MVF — — 36.19 (919) 172 (78) 2325 325243MVF 325413MVF 325483MVF 36.19 (919) 177 (80) 2350 350243MVF 350413MVF 350483MVF 36.19 (919) 182 (83) 2375 375243MVF 375413MVF 375483MVF 36.19 (919) 188 (85) 2400 400243MVF 400413MVF 400483MVF 36.19 (919) 194 (88) 2425 425243MVF 425413MVF 425483MVF 41.94 (1065) 206 (93) 2450 450243MVF 450413MVF 450483MVF 41.94 (1065) 214 (97) 2475 475243MVF 475413MVF 475483MVF 41.94 (1065) 214 (97) 2500 500243MVF 500413MVF 500483MVF 41.94 (1065) 214 (97) 2525 525243MVF 525413MVF 525483MVF 41.94 (1065) 226 (103) 2550 550243MVF 550413MVF 550483MVF 41.94 (1065) 238 (108) 2575 — 575413MVF 575483MVF 41.94 (1065) 238 (108) 2575 575243MVF — — 36.19 (919) 259 (118) 3600 — 600413MVF 600483MVF 41.94 (1065) 238 (108) 2600 600243MVF — — 36.19 (919) 265 (121) 3625 625243MVF 625413MVF 625483MVF 41.94 (1065) 279 (127) 3650 650243MVF 650413MVF 650483MVF 41.94 (1065) 287 (131) 3675 675243MVF 675413MVF 675483MVF 41.94 (1065) 295 (134) 3700 700243MVF 700413MVF 700483MVF 41.94 (1065) 295 (134) 3725 725243MVF 725413MVF 725483MVF 41.94 (1065) 295 (134) 3750 750243MVF 750413MVF 750483MVF 41.94 (1065) 295 (134) 3775 775243MVF 775413MVF 775483MVF 41.94 (1065) 307 (140) 3800 800243MVF 800413MVF 800483MVF 41.94 (1065) 319 (145) 3825 825243MVF 825413MVF 825483MVF 41.94 (1065) 331 (151) 3850 — 850413MVF 850483MVF 41.94 (1065) 331 (151) 3875 — 875413MVF 875483MVF 41.94 (1065) 331 (151) 3900 — 900413MVF 900483MVF 41.94 (1065) 331 (151) 3


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Technical Data (Continued)

TABLE 3. THREE-PHASE FUSED

Note:

Add suffix “C” for CSA label.

KVAR 2400 VOLT 4160 VOLT 4800 VOLTDIMENSION (A) INCHES (MM)

APPROX. WEIGHT LBS (KG) FIGURE NO.

25 25243MVF3 25413MVF3 25483MVF3 34.44 (875) 72 (32) 150 50243MVF3 50413MVF3 50483MVF3 34.44 (875) 72 (32) 175 75243MVF3 75413MVF3 75483MVF3 34.44 (875) 72 (32) 1100 100243MVF3 100413MVF3 100483MVF3 36.19 (919) 77 (34) 1125 125243MVF3 125413MVF3 125483MVF3 36.19 (919) 85 (38) 1150 150243MVF3 150413MVF3 150483MVF3 36.19 (919) 90 (40) 1175 175243MVF3 175413MVF3 175483MVF3 36.19 (919) 95 (42) 1200 200243MVF3 200413MVF3 200483MVF3 36.19 (919) 101 (45) 1225 225243MVF3 225413MVF3 225483MVF3 41.94 (1065) 111 (49) 1250 250243MVF3 250413MVF3 250483MVF3 41.94 (1065) 111 (49) 1275 275243MVF3 275413MVF3 275483MVF3 41.94 (1065) 123 (55) 1300 — 300413MVF3 300483MVF3 41.94 (1065) 123 (55) 1300 300243MVF3 — — 36.19 (919) 176 (78) 2325 325243MVF3 325413MVF3 325483MVF3 36.19 (919) 181 (80) 2350 350243MVF3 350413MVF3 350483MVF3 36.19 (919) 186 (83) 2375 375243MVF3 375413MVF3 375483MVF3 36.19 (919) 192 (85) 2400 400243MVF3 400413MVF3 400483MVF3 36.19 (919) 198 (88) 2425 425243MVF3 425413MVF3 425483MVF3 41.94 (1065) 210 (93) 2450 450243MVF3 450413MVF3 450483MVF3 41.94 (1065) 218 (97) 2475 475243MVF3 475413MVF3 475483MVF3 41.94 (1065) 218 (97) 2500 500243MVF3 500413MVF3 500483MVF3 41.94 (1065) 218 (97) 2525 525243MVF3 525413MVF3 525483MVF3 41.94 (1065) 230 (103) 2550 550243MVF3 550413MVF3 550483MVF3 41.94 (1065) 242 (108) 2575 — 575413MVF3 575483MVF3 41.94 (1065) 242 (108) 2575 575243MVF3 — — 36.19 (919) 265 (118) 3600 — 600413MVF3 600483MVF3 41.94 (1065) 242 (108) 2600 600243MVF3 — — 36.19 (919) 271 (121) 3625 625243MVF3 625413MVF3 625483MVF3 41.94 (1065) 285 (127) 3650 650243MVF3 650413MVF3 650483MVF3 41.94 (1065) 293 (131) 3675 675243MVF3 675413MVF3 675483MVF3 41.94 (1065) 301 (134) 3700 700243MVF3 700413MVF3 700483MVF3 41.94 (1065) 301 (134) 3725 725243MVF3 725413MVF3 725483MVF3 41.94 (1065) 301 (134) 3750 750243MVF3 750413MVF3 750483MVF3 41.94 (1065) 301 (134) 3775 775243MVF3 775413MVF3 775483MVF3 41.94 (1065) 313 (140) 3800 800243MVF3 800413MVF3 800483MVF3 41.94 (1065) 325 (145) 3825 825243MVF3 825413MVF3 825483MVF3 41.94 (1065) 337 (151) 3850 — 850413MVF3 850483MVF3 41.94 (1065) 337 (151) 3875 — 875413MVF3 875483MVF3 41.94 (1065) 337 (151) 3900 — 900413MVF3 900483MVF3 41.94 (1065) 337 (151) 3


6 EATON CORPORATION


Dimensions

FIGURE 1.

FIGURE 2.

FIGURE 3.


EATON CORPORATION


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Univar (15 kV Class)

Univar Fixed Medium Voltage PFC Unit

Product Description

Capacitors for medium voltage, heavy-duty applications:

●

Univar capacitors are designed for power factor correction in applications where a fixed amount of capacitance (kvar) is required.

●

6600 V, 7200 V, 12,470 V or 13,800 V.

●

Fast economical payback.

●

Individual units or multiple assemblies can be designed.

●

Indoor dustproof/outdoor waterproof enclosures (NEMA 12, NEMA 3R).

●

Floor mounting.

●

All units above 4800 V are supplied with fusing on all three phases.

●

NEMA 3R terminal box.


●

Large motors.

●

Motor control centers.

●

Branch circuits.

●

Service entrances.


Standard Features

Enclosure

16-gauge steel finished with durable baked-on enamel. The wiring enclosure is gasketed to create a weatherproof, dustproof seal. Uni-versal mounting flanges are provided for floor installation. The elimi-nation of knockouts permits indoor/outdoor use. Unit meets NEMA 1, 3R and 12 requirements. Enclosure is painted ANSI 70 gray.

Fusing

Fuses are rated 50,000 amperes symmetrical interrupting capacity. Ratings are 165% to 250% of rated current. Fuses have visual pop-up blown fuse indication standard.

Discharge Resistors

These reduce the residual voltage to less than 50 V residual within five (5) minutes of de-energization.

Grounding Stud

Standard.

Power Line Terminals

Large size for easy connection.

Operating Temperature

-40ºF (-40ºC) to 115ºF (+46ºC)

Optional Features

●

CSA testing and labels.

TABLE 4. UNIVAR THREE-PHASE RATINGS

VOLTS HERTZ KVAR

6600 60 50 – 400

7200 60 50 – 400

12,470 60 50 – 500

13,800 60 50 – 500


8 EATON CORPORATION


Technical Data

TABLE 5. STANDARD 3 FUSES (6600 — 13,800 VOLTS)

Dimensions

FIGURE 4. DRAWING NO. 5D10243

STANDARD 3 FUSES DIMENSIONSAPPROX. WEIGHT

FIGUREN0.

STANDARDDWG NO.KVAR 6600 VOLT 7200 VOLT 12,470 VOLT 13,800 VOLT

(A) INCHES (MM)

(B)INCHES (MM)

(C) INCHES (MM)

(D)INCHES (MM) LBS (KG)

50 50663FKED3 50723FKED3 50123FKED3 50133FKED3 4.25 (108) 45.50 (1156) 14.46 (367) 0.25 (6) 198 (90) 4 5D10243100 100663FKED3 100723FKED3 100123FKED3 100133FKED3 4.25 (108) 45.50 (1156) 14.46 (367) 0.25 (6) 198 (90) 4 5D10243150 150663FKED3 150723FKED3 150123FKED3 150133FKED3 4.25 (108) 45.50 (1156) 14.46 (367) 0.25 (6) 198 (90) 4 5D10243200 200663FKED3 200723FKED3 200123FKED3 200133FKED3 5.62 (143) 45.50 (1156) 14.46 (367) 0.25 (6) 220 (100) 4 5D10243250 250FKY66323 250FKY2323 250FKY12323 250FKY13323 5.62 (143) 48.50 (1232) 17.46 (443) 0.25 (6) 246 (112) 4 5D10243300 300FKY66323 300FKY2323 300FKY12323 300FKY13323 5.62 (143) 53.50 (1359) 17.46 (443) 0.25 (6) 246 (112) 4 5D10243350 350FKY66323 350FKY2323 350FKY12323 350FKY13323 5.62 (143) 53.50 (1359) 17.46 (443) 0.25 (6) 246 (112) 4 5D10243400 400FKY66323 400FKY2323 400FKY12323 400FKY13323 5.62 (143) 57.25 (1454) 22.46 (570) 0.25 (6) 281 (128) 4 5D10243450 — — 450FKY12323 450FKY13323 5.62 (143) 57.25 (1454) 22.46 (570) 0.25 (6) 281 (128) 4 5D10243500 — — 500FKY12323 500FKY13323 5.62 (143) 57.25 (1454) 26.21 (666) 0.25 (6) 336 (153) 4 5D10243

A

CB

D

.250-20Grd. Scr.

16.42

Removable Top Cover

Solderless Conn.for A #10 Solidto A #4 Str'd. Conn.

(2).500 x .625Slots [13 x 16]

25.0824.12

34.00Barriers


EATON CORPORATION


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Autovar MV

Medium Voltage Metal-Enclosed PFC System

Product Description

The Autovar medium voltage automatic power factor capacitor sys-tems are designed for power factor correction in applications where plant power factor can be constant or changing, and an engineered solution is required. These systems can be a fixed amount of capaci-tance with a disconnect, a number of switched capacitance stages, or a combination of both. The Autovar medium voltage capacitor system can switch stages of capacitance in and out automatically based on information collected by the power factor controller on the door-in-door control panel.


●

Voltages from 2400 V – 14,400 V.

●

Reactive power ratings through 15 MVar.

●

Harmonic tuned, de-tuned, or multi-tuned filter designs available.

●

Externally fused capacitor units standard.

●

Blown fuse indication standard.

●

Integral load interrupter switch, NEMA 2 hole termination pad.

●

Delivered fully assembled, tested and ready for interconnection.

●

Integral protection and control system.

●

Top or bottom cable entry.

●

Earthing switch.

●

60 kV BIL up to 4.8 kV.

●

95 kV BIL from 7.2 kV to 14.4 kV.

●

Up to 12 automatic switched capacitor stages.

●

Warning labels.

●

Removable air filters without opening enclosure doors.

●

Blocking timers to prevent re-closing of a capacitor stage in less than 200 seconds.

●

Meets the following requirements:

– ANSI– IEEE– NEC– NESC– CSA (when specified)

●

Main incoming fuses are rated 50 kAIR to provide main busprotection, as well as back-up protection for the capacitor systems.

●

4-inch base channel is standard.

Standard Features — Autovar MV

Enclosure

Free-standing, 11-gauge steel construction with 3-point padlockable latching handles and stainless steel hinges. The enclosure is painted

with a corrosion-resistant ANSI 61 light gray enamel paint as stan-dard. Other colors are available as an option. NEMA 3R construction is standard, NEMA 3R stainless steel is available as an option.

Enclosure is UL

T

/CSA approved.

See

Figure 5

for typical dimensions and elevations.

See

Figure 6

for a typical single-line drawing.

Medium Voltage PFC Enclosure

Bottom Plate Incoming Cutout Provided Standard

Load Interrupter Air Disconnect Switch

Integral disconnect switch, externally operated, mechanically chain driven with visible blades is available as per NEC requirements. Disconnect switch is mechanically interlocked with the ground switch, and with the customer’s upstream device (if applicable). Incoming section is front-accessible only for safety, and barrier isolate live connections from the user.

Incoming Section with Protective Screens

Incoming Section with Screens Removed


10 EATON CORPORATION


Ground Switch

A ground switch is provided to ground the load-side terminals of the incoming switch (or MLO) for safety during maintenance. Optional controls are available to permit closing contactors after the grounding switch has been closed to ground capacitors immediately (rather than waiting five (5) minutes for full discharge).

Ground Switch in the Incoming Section

Vacuum Switches

On multi-stage capacitor systems, each stage is controlled by low maintenance vacuum contactors (2.4 – 7.2 kV) or vacuum switches (7.2 – 15 kV) depending on the application (see below).

15 kV Switched Capacitor Stage Enclosure

Vacuum Contactors

The type SL and SJ power contactors were designed and engineered specifically for use in AMPGARD

E

starters. They are self-supporting, compact, three-pole vacuum contactors. The SL contactor utilizes a solid-state control board, allowing the user maximum flexibility to change control voltages and dropout times in the field simply by adjusting DIP switch settings. The SL contactor is available for 2.4 kV – 4.8 kV volts at ratings of 200 and 400 amperes (the highest rated 400 ampere contactor available), and contactor interruption ratings of 8500 amperes allowing for higher levels of coordination with power fuses.

5 kV Switched Capacitor Stage Enclosure

Individual Capacitor Fusing

Each capacitor is externally fused with current limiting fuses. Fuses are equipped with blown fuse indication. Internally fused capacitors are also available as an option.

Each Capacitor Section is Individually Fused

Environmental Controls

●

Exhaust fans: Exhaust fans are provided for forced air ventilation of all enclosures as standard.

●

Thermal controls: Thermostats are included as standard to help maintain an acceptable internal environment for all components.

●

Space heaters: Space heaters are provided to control moisture and humidity inside all enclosures.

●

Each compartment has individual thermostats for fan and space heater controls.


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Capacitors

Low loss, double-bushing capacitors that meet or exceed IEC 871, IEEE Std. 18 and CSA standards are supplied. Capacitors are con-nected in an ungrounded wye as standard, but can be connected delta as well. The dielectric fluid is environmentally friendly, biode-gradable, non-PCB. Capacitor units are equipped with internal dis-charge resistors which reduce the residual voltage to less than 50 volts within 5 minutes of de-energization.

Harmonic Filtering

Eaton’s Cutler-Hammer medium voltage harmonic filter systems are designed for industrial, utility and commercial power systems to improve power factor, reduce harmonic distortion, increase system capacity and reduce I2R losses. The reactors are typically tuned to the 4.7th harmonic, to mitigate the most damaging 5th level har-monic. This is the most common harmonic produced by six pulse variable speed drives. These filters are designed to the unique specifications of each electrical distribution system. Medium voltage capacitor banks can also be configured with de-tuned harmonic filters, typically set to the 4.2nd harmonic. This helps avoid harmonic resonance problems, provides harmonic filtering, and avoids the overloading that is possible with an improperly applied filter.

Harmonic Filter Capacitor Stage Enclosure

Key Interlock System

The key interlock system controls the sequential operation of the load break switch (or circuit breaker) and the ground switch to permit safe entry into the capacitor system. All capacitor stage enclosures are also interlocked with the ground switch. If applicable, the customer’s upstream disconnect device can be interlocked as well. See

Figure 6

for key interlock operation on a typical single-line drawing.

Key Interlock System Ensures Safety in Main and Stage Doors

Blown Fuse Detection System

A visual pop-up blown fuse detection system is provided as standard.

Control Power Transformer

A fused control power transformer rated for 1.5 kVA is provided for pro-tection, control and operation of the capacitor or harmonic filter system.

Transient Voltage Surge Suppression

A TVSS unit is supplied standard for protection of all low voltage controls in the system.

CPT and TVSS Provide Power and Protection for Control Section

Control Panel

A door-in-door NEMA 3R swing-out control panel is provided on the main incoming structure as standard. This unit includes a viewing window so that all controls and information can be viewed without opening the panel. All low voltage controls and logic are accessible from the front of the system, and are isolated from the medium voltage section.

Included:

●

PFC controller.

●

Ammeter with switch (for maintenance and diagnostic purposes).

●

Stage ON/OFF pilot lights.

●

Manual stage operation switches.

●

Any special controls requested by the customer.

Door-in-Door Control Panel


12 EATON CORPORATION


Solid-State Controller

Automatic metal-enclosed capacitors and harmonic filter systems come equipped with an automatic controller that switches each capacitor stage based upon power factor. The customer simply programs in the target PF to meet. The controller analyzes current PF, the size of each stage, and turns on and off stages to meet the cus-tomer’s programmed target. The controller has alarms such as power factor out of range, high harmonic voltage content and loss of power.

Up to 12 steps of capacitance can be designed into any system. Customers can note this feature when designing for future expansions.

Communications

Communications of power factor data via RS-485. ModbusT is avail-able as an option. Communicated information from the controllers: ● Voltage.● Current.● Target power factor.● Current power factor.● Active power.● Apparent power.● Reactive power.● Number of steps in the circuit.● All alarm status.● All counters.● Time and date.

Inrush Reactors

Inrush reactors are provided as standard on all switched (non-harmonic filtered) capacitor systems for protection against transients from back-to-back switching. Reactors in harmonic filtered applications provide this same protection.

Inrush Reactor for Back-to-Back Switching

Bus

Continuous 1/4” x 2” silver-plated copper bus rated 600 A standard is provided throughout the line-up for easy interconnection, field instal-lation and future expansion.

Phase Bus

Continuous 1/4” x 1” silver-plated copper ground bus rated 300 A is provided throughout the line-up for easy interconnection, field instal-lation and future expansion. Ground studs are available in all structures for customer connection.

Continuous Ground Bus with Pad in Each Section

Additional Standard Controls and Features

● Three-phase manual current monitoring, for maintenance purposes.

● Unbalance alarm and unit shutdown on all wye-connected systems.

● Unit alarm and isolated fail-safe contacts for customer use on all systems. Controls allow sufficient time (5 minutes) to allow the capacitors time to discharge before re-energization can occur.

● Temperature alarms on all harmonic filter units.● Manual stage controls (H-O-A Selector Switches).


EATON CORPORATION PF Correction and Harmonic Filter Systems Technical Data TD02607011E ©Copyright 2008 13

Medium Voltage Metal-Enclosed PFC System

Optional Features

Harmonic Filter Reactors

Iron core reactors provide the necessary reactance to tune the capacitor system to a desired frequency. Standard tuning is the 4.7th harmonic. Other tuning frequencies, as well as multi-tuned systems, are also available. Iron core reactors are 100% copper windings, 115°C rise with 220°C insulation VPI varnish.

Harmonic Filter

Lightning Arresters

Optional heavy-duty distribution class/intermediate/station lightning arresters protect the capacitor system from lightning and switching transients.

IQ Digital Power Meter

A highly advanced digital power meter (IQ Analyzer or Power XpertT series), suited to many power and control applications, can be sup-plied as an option. This solid-state meter can take the place of numer-ous meters and control circuits to meet your power and energy monitoring requirements. Communications options are also available.

IQ Analyzer 6600

Enclosure Options

NEMA 3R stainless steel construction for highly caustic environments.

Alarm Strobe

Strobe light can be provided for visual indication of faults and alarms.

Unbalance Protection

Neutral PT or CT-based unbalance protection for wye ungrounded capacitor configuration.


14 EATON CORPORATION PF Correction and Harmonic Filter Systems Technical Data TD02607011E Effective: November 2008

Technical Data

FIGURE 5. TYPICAL ENGINEERED METAL-ENCLOSED POWER FACTOR CORRECTION SYSTEM DIMENSIONAL DATA

Shipping SplitIncoming Main Section

Mai

n S

wit

chG

rou

nd

Sw

itch

92.56 (2351.0)

90.33

K1

D2D2

180.80 (4592.3)

Front Elevation8 Tieddown Pointsper EnclosureFront and Rearfor 1/2 Inch Hardware Rear Access Doors Optional

Base Channel40-Inches High

1.50 (38.1) (Typ)

45.00 (1143.0)

DangerHigh Voltage

Keep Out

Bottom PowerCable Entry

Rigth Side Elevation

49.10 (1247.1)

DANGER

CAUTION CAUTION

DANGERDANGER

CAUTION

DangerHigh Voltage

Keep Out

DangerHigh Voltage

Keep Out

Danger

Control Panel

D3

13.50 (342.9)

15.00 (381.0)

13.50 (342.9)

48.27 (1226.1)

18.00 (457.2)

21.79 (553.5)

18.00 (457.2)

Bottom EntryCover Plate

5.09 (129.3)

9.07 (230.4)

1.00 (25.4)

Front Access 5 Foot Clearane

Floor Plan

Top View

Top EntryControlConduit

4.00 x 4.00

4.00 (101.6)

Top EntryMV

ConduitArea

19.00 (482.6)

16.00 (406.4)

13.00 (330.2)

15.00 (381.0)

38.00 (965.2)

Top PowerCable Entry

Lifting Eyes

22.80 (579.1)

1740 (442.0)Customer

CableTermination(ApproximateLocation, SeeActual Unitfor ExactDimensions)

Gourd Bus 1/4-inch x 1-inch

Base Channel



FIGURE 6. TYPICAL MEDIUM VOLTAGE AUTOMATIC POWER FACTOR CORRECTION SINGLE-LINE DRAWING

Alarm or Trip

CapacitorCapacitorCapacitorDelta/Wye Delta/Wye Delta/Wye

Fuse

Reactor

ContactorVacuum

59

TransformerUtility

Utility Line

A-Phase 1

CT

Plant Loads

Feeder Breaker K0

B & CTap On

1-Phase

MainCPT

ControllerPower Factor

BLR-CM

K1

K1K-K Interlock

SwitchGround

Switch

K0

K-K Interlock

ControlS3S2S1

3

CT1 46 Relays

C1C

S1

S1

EnclosureDoor

C1

K-K Interlock (Optional)

AMAS

Main Breaker



Metal-Enclosed Capacitor Bank Equipment — Medium Voltage

PART 1 GENERAL

1.01 SCOPE

A. The Contractor shall furnish and install Metal-Enclosed Capacitor equipment as specified herein and as shown on the contract drawings.

B. This specification contains the minimum requirements for the design, manufacture and testing of Metal-Enclosed Capacitor bank rated [2.4KV] [4.16KV] [4.8KV] [6.9KV] [7.2KV] [11.4KV] [12.47KV] [13.2KV] [13.8KV] OR [14.4KV].

C. This specification covers the electrical characteristics and mechanical features of a three-phase, 50 or 60 Hertz, self-contained, free-standing, metal-enclosed capacitor bank. The application of these units is for power factor improvement.

D. Should the manufacturer or supplier of the equipment specified under this section take exception to any part of this specification, he shall so state in his bid, by reference to each item number.

1.02 RELATED SECTIONS

1.03 REFERENCES

A. The Metal-Enclosed Capacitor equipment shall be designed and tested in accordance with the latest standards of NEMA, NEC, IEEE and ANSI.

1.04 SUBMITTALS — FOR REVIEW/APPROVAL

A. The following information shall be submitted to the Engineer:

1. Master drawing index

2. Front view elevation

3. Floor plan

4. Top view

5. Nameplate schedule

6. Conduit entry/exit locations

7. Equipment ratings including:

a. Short-circuit ratingb. Voltagec. Continuous current

8. Major component ratings including:

a. Voltageb. Continuous currentc. Interrupting ratings

9. Product data sheets.

1.05 SUBMITTALS — FOR CONSTRUCTION

A. The following information shall be submitted for record purposes:

1. Final as-built drawings and information for items listed in Paragraph 1.04

2. Certified production test reports

3. Installation information

B. The final (as-built) drawings shall include the same drawings as the construction drawings and shall incorporate all changes made during the manufacturing process.

1.06 QUALIFICATIONS

A. The manufacturer of the assembly shall be the manufacturer of the major components within the assembly.

B. For the equipment specified herein, the manufacturer shall be ISO 9001 or 9002 certified.

C. The manufacturer of this equipment shall have produced similar electrical equipment for a minimum period of five (5) years. When requested by the Engineer, an acceptable list of installations with similar equipment shall be provided demon-strating compliance with this requirement.

D. The manufacturer shall provide calibration of report of every test equipment and torque wrench used during the mfg process.

E. The manufacturer shall have work instructions for the mfg process.

1.07 DELIVERY, STORAGE AND HANDLING

A. Equipment shall be handled and stored in accordance with manufacturer’s instructions. One (1) copy of these instructions shall be included with the equipment at time of shipment.

1.08 OPERATION AND MAINTENANCE MANUALS

A. Equipment operation and maintenance manuals shall be provided with each assembly shipped and shall include instruction leaflets, instruction bulletins and renewal parts lists where applicable, for the complete assembly and each major component.

PART 2 EQUIPMENT

2.01 RATINGS

A. The system operating voltage shall be as indicated on the contract drawings.

B. The total capacity of the Metal-Enclosed Capacitor unit shall be .________ kVAr. The total kVAr capacity shall be divided into .________ kVAr non-switched (fixed) and ._______ kVAr automati-cally switched in steps of _______ kVAr.

C. The capacitor bank shall have the following automatic stages: Stage 1 ____kVAR, Stage 2 ____kVAR, Stage 3 ____kVAR, Stage 4 ____kVAR, Stage 5 ____kVAR, Stage 6 ____kVAR. The Capacitor bank shall have a fixed stage _____KVAR (specify if required).

D. The Metal-Enclosed Capacitor bank unit shall a modular design with provisions for expansion to _______kVAr.

E. The capacitor shall be rated for continuous duty at 40°C ambient at 3,300 ft. (1,000 meters) and below. The nominal rating of the capacitor cell shall be 1.10 times the voltage rating of the system.

F. Total Harmonic Distortion (THD) of 5% of voltage waveforms shall not affect the life of capacitors, contactors or controller.

G. A +/- 10% variation in line voltage shall not affect the life of the capacitor.

2.02 CONSTRUCTION

1. General

a. Enclosure shall be NEMA 3R OUTDOOR enclosure with gaskets and air filters. The structure shall be front accessible, free-standing with necessary provisions for ventilation and handling. The steel thickness shall be 11 gauge or equivalent.

b. There shall be thermostatically controlled heaters for condensation control. Each section shall have a space heater and thermostat.

c. Filters and stainless steel screens shall be provided to prevent dust and insect entry. Filters are to be removable for replace-ment or cleaning purposes from outside.

d. Structures shall be bolted steel frame, formed steel doors and side sheets, flat and sloped to rear steel top and rear covers.

e. Thermostatically controlled forced air ventilation shall be provided in all compartments. Each section with capacitor shall have minimum two cooling fans controlled by a dedicated thermostat.



f. Copper bus shall be provided and properly sized to handle continuous current rating of capacitor bank as well as a minimum of 25% (if future expansion required, specify) future expansion.

g. Inrush reactors shall be air core, copper windings and 40uH minimum for each stage. Reactors shall be sized per the capacitor stage kvar sizes.

h. Contactors shall be rated for switching of capacitors by the contactor manufacturer.

i. The automatic harmonic filter equipment shall be warranted by the manufacturer of the capacitor bank.

j. The capacitor bank shall be modular design for ease of future expansion.

k. Capacitor bank shall have a 4-inch base channel.l. Each section shall have a viewing window.m. The main bus and ground bus shall be silver plated copper. n. The bus support insulators shall be 95kV BIL.o. Each stage of the capacitor bank shall be installed in an

individual compartment isolated by steel sheets from other stages.

p. All Fuses shall be rated 50kAIR, full rated for the system voltage class, current limiting type.

q. The equipment shall be modular design with maximum 90”wide x 49”deep sections.

r. The equipment shall be shipped on wood pallets for ease of handling and installation.

s. Each shipping section shall have removable lifting eyes.t. Each section door shall have warning labels, Danger High

Voltage, Section #, and Caution labels.u. The enclosure steel shall be fabricated at the same mfg.

facility where the capacitor bank is assembled. v. The doors shall have gaskets, heavy-duty hinges, pad lockable

and keyed heavy-duty handles. The doors shall be latched at three points. Doors shall have welded grounding studs and shall be bonded to the equipment ground bus.

w. The roof shall be sloped to the rear. There shall be a drip shield provided over each door.

2. Incoming Section

a. Unit shall have an integrally mounted, assembled isolation disconnect (if specified) with current limiting fuses (if speci-fied), and grounding switch (if specified) OR Incoming section shall have NEMA termination pads with main fuses (or without main fuses).

b. [Distribution/Intermediate class arresters shall be provided for lightning protection. Specify MCOV required.]

c. [Current limiting line fuses shall be provided for equipment short circuit protection sized a minimum of 135% of required amperage.]

d. (If specified) Main switch and ground switch shall have externally operable handles with padlocking provisions.

e. Control power transformer shall be provided in each incoming section.

f. Current transformer shall be provided for each phase to monitor capacitor bank current. Current transformers shall be multi-ratio with 10 ratio taps so that the ratio can be adjusted for future expansion.

g. Incoming section shall be designed for top, bottom and rear side Customer power cable entry. For bottom entry a removable bolted cover plate shall be provided.

h. The incoming section shall have adequate power cable bending radius space for Customer’s cables.

i. The incoming section shall have cable supports for Customer’s power cables.

3. Capacitor Section

a. Capacitors shall be low loss, 2 bushing (or 3 bushing if specified, Internally Delta connected), properly sized and connected per the specification.

b. Each capacitor cell shall Internal discharge resistors to drain voltage to 50 volts or less in five minutes.

c. Capacitor shall be suitable for operation at 110% of rated volt-age, and 135% of rated current minimum.

d. Capacitors shall be rated [60 kV/ 75 kV/95 kV] BIL.e. Capacitors shall be configured in [delta/wye] arrangement.f. A current limiting capacitor fuse with current and voltage

ratings appropriate for the capacitor shall protect stage and capacitors.

g. Capacitors for harmonic filter applications shall be heavy duty, 55°C temperature rating, 125% continuous over-voltage capa-bility, 15 kA fault handling capability, 100 kA transient current withstand capability, and meet IEEE std 18, NEMA and IEC standards.

h. Vacuum contactors shall be rated for capacitive switching. Vacuum contactors shall be rated 7.2 kV, 3-pole for 5 kV systems and 15 kV,1-pole for 15 kV systems.

i. Each capacitor case shall be grounded to the enclosure ground bus.

j. Each vacuum contactor shall be grounded to the enclosure ground bus.

4. Control Sectiona. This section shall include a digital power factor controller with

a digital power factor meter.b. Programmable set points for all functions.c. Stage anti-cycling timers programmable to not less than

5 minutes.d. Power Factor “Out-of-Range” alarm.e. High harmonic content (>5% THD voltage) alarm.f. Manual-Off-Auto toggle switches shall be provided for

operation of the switched steps.g. “Power On” and “Unit Alarm” indicating lights.h. Capacitor "Stage On" indicating lights shall be provided.i. Each stage shall have Manual-Off-Auto switches, stage on

indicator, and counter. The control scheme shall be such that when switching from “Manual” position to “OFF” to “AUTO” or “MAN” position on any stage, that the corre-sponding stage will not be energized in less than 5 minutes. An interposing timing relay shall be provided to prevent energization of the capacitor stage in less than 5 minutes.

j. A digital multifunction meter/relay shall be included with amps and phase current unbalance functions.

k. Power factor controller shall have the following alarm options which can be programmed by the Customer: over/under compensation, no current signal, step fault, step warning, 20X switching time outside limit, voltage harmonic limit, current harmonic limit, and voltage outside tolerance.

l. Power factor controller shall have password protection.m. Power factor controller shall have field adjustable phase

compensation so that the user can connect the current and voltage measurement signals in any phase orientation so that the user does not have to physically rotate the power cable and/or CT leads to achieve a particular phasing between current and voltage.

n. Power factor controller shall have individual discharge time programmable for each step.

o. Control panel shall be designed for future addition for ___ stages (If future expansion required, specify).

p. Not used.q. Controller shall have control halt and control sleep on/off

settings for each control alarm.r. Controller shall have a digital relay output in addition to the

alarm output.



s. Controller shall have programmable switch cycle balancing, step exchange and control sensitivity settings.

t. Control panel shall have 120 V circuit breaker for disconnect-ing and over-current protection of control wiring.

u. Space heater circuit shall be such that the Customer can bring external power source if needed to power space heaters during storage.

v. The control shall have on delay timers as protection against upstream utility reclosers opening and closing to clear distribution line faults. The start timer shall be adjustable.

w. All timers and settings shall be field adjustable.x. All control wiring shall be minimum #14 AWG, 600 V.

5. Key Interlock System

a. Unit main disconnect shall have key lock that, when switch is open, key is removable to unlock opened position on ground switch.

b. The ground switch can then be closed and shall have key interlocks that can be removed in closed position to allow for unlocking doors.

c. The ground switch cannot close unless the disconnect switch is locked open. The ground switch cannot open unless all the capacitor section doors have been locked closed.

6. Bank Protection

a. Unit shall have a weatherproof alarm strobe light and dry contacts for customer remote alarm.

b. Power factor controller shall have the following programmable alarms and setpoints:

1. No current input

2. Step fault

3. Step warning

4. 20 X switching time outside limit

5. Voltage Harmonics overload

6. Current Harmonics overload

7. Control voltage out of tolerance

8. Overcurrent

9. Over/under compensation

c. Capacitors shall be protected with current limiting full voltage rated fuses with blown fuse indication. Fuses shall be 50 kAIR rated for the full system voltage class.

2.03 NAMEPLATES

A. Each unit will have a rating nameplate. The lettering shall be black 3/16-inch high, on a silver background.

B. The main incoming section shall have a rating nameplate located on the inside door in addition to the external nameplate.

2.04 FINISH

A. Metal-Enclosed capacitor equipment enclosures shall be provided with a powder coat paint finish. Exterior color shall be ANSI 61.

PART 3 TESTING AND DOCUMENTATION

3.01 FACTORY TESTING

A. All capacitors shall be tested in compliance with NEMA, and ANSI requirements for capacitance, dissipation factor, terminal to terminal and terminal to case dielectric strength, and oil leaks. All capacitor cells shall be traceable through construction and testing.

B. The automatic power factor capacitor correction unit shall be tested for proper operation prior to leaving the factory. The certified record of these tests shall become part of the perma-nent documentation package that travels with the automatic capacitor bank. The following checks, measurements, and operations must be confirmed and recorded for each stage.

1. Wire connections

2. Torque connections

3. Phase to Phase resistance checks

4. Phase to Phase capacitance checks

5. Controller operation, manual operation

6. Controller operation, automatic operation

7. Megger

8. Hi-pot

9. Test meter and controller with secondary current injection

C. Capacitor bank assembly shall be engineered, manufactured and tested under the supervision of a Registered Professional Electrical Engineer.

3.02 DOCUMENTATION

A. Supplier to provide test reports for capacitors, reactors, and capacitor bank assembly.

B. Supplier to provide handling and installation instructions.

C. Supplier to provide inspection and maintenance schedule.

D. Supplier to provide ISO-9001 certificate for the facility where the capacitor bank will be manufactured.

E. Supplier to provide facilities Quality System Manual.

F. Supplier to provide approval/construction/as-built schematic, outline, settings, and wiring drawings.



Metal-Enclosed Harmonic Filter Capacitor Bank Equipment — Medium Voltage

PART 1 GENERAL

1.01 SCOPE

A. The Contractor shall furnish and install Metal-Enclosed Capacitor equipment as specified herein and as shown on the contract drawings.

B. This specification contains the minimum requirements for the design, manufacture and testing of Metal-Enclosed Capacitor bank rated [2.4 KV] [4.16 KV] [4.8 KV] [6.9 KV] [7.2 KV] [11.4 KV] [12.47 KV] [13.2 KV] [13.8 KV] OR [14.4 KV].

C. This specification covers the electrical characteristics and mechanical features of a three-phase, 50 or 60 Hertz, self-contained, free-standing, metal-enclosed capacitor bank. The application of these units is for power factor improvement.


1.02 RELATED SECTIONS

1.03 REFERENCES

A. The Metal-Enclosed Capacitor equipment shall be designed and tested in accordance with the latest standards of NEMA, NEC, IEEE and ANSI.



1. Master drawing index


3. Floor plan

4. Top view

5. Nameplate schedule

6. Conduit entry/exit locations



8. Major component ratings including:

a. Voltageb. Continuous currentc. Interrupting ratings

9. Product data sheets.



1. Final as-built drawings and information for items listed in Paragraph 1.04



B. The final (as-built) drawings shall include the same drawings as the construction drawings and shall incorporate all changes made during the manufacturing process.

1.06 QUALIFICATIONS



C. The manufacturer of this equipment shall have produced similar electrical equipment for a minimum period of five (5) years. When requested by the Engineer, an acceptable list of installa-tions with similar equipment shall be provided demonstrating compliance with this requirement.

D. The manufacturer shall provide calibration of report of every test equipment and torque wrench used during the mfg process.

E. The manufacturer shall have work instructions for the mfg process.


A. Equipment shall be handled and stored in accordance with manu-facturer’s instructions. One (1) copy of these instructions shall be included with the equipment at time of shipment.



PART 2 EQUIPMENT

2.01 RATINGS

A. The system operating voltage shall be as indicated on the contract drawings.

B. The total capacity of the Metal-Enclosed Capacitor unit shall be .________ kVAr. The total kVAr capacity shall be divided into .________ kVAr non-switched (fixed) and _______ kVAr automati-cally switched in steps of _______ kVAr.

C. The Metal-Enclosed Capacitor bank unit shall a modular design with provisions for expansion to _______kVAr.

D. The capacitor bank shall have the following automatic stages : Stage 1 ____kVAr, Stage 2 ____kVAr, Stage 3 ____kVAr, Stage 4 ____kVAr, Stage 5 ____kVAr, Stage 6 ____kVAr. The Capacitor bank shall have a fixed stage _____kVAr (specify if required).

E. The capacitor shall be rated for continuous duty at 40°C ambient at 3,300 ft. (1,000 meters) and below. The nominal rating of the capacitor cell shall be 1.10 times the voltage rating of the system.

F. Total Harmonic Distortion (THD) of 5% of voltage waveforms shall not affect the life of capacitors, contactors or controller.

G. A +/- 10% variation in line voltage shall not affect the life of the capacitor.



2.02 CONSTRUCTION

1. General

a. Enclosure shall be NEMA 3R OUTDOOR enclosure with gaskets and air filters. The structure shall be front accessible, free standing with necessary provisions for ventilation and handling. The steel thickness shall be 11 gauge or equivalent.

b. There shall be thermostatically controlled heaters for condensation control. Each section shall have a space heater and thermostat.

c. Filters and stainless steel screens shall be provided to prevent dust and insect entry. Filters are to be removable for replace-ment or cleaning purposes from outside.

d. Structures shall be bolted steel frame, formed steel doors and side sheets, flat and sloped to rear steel top and rear covers.

e. Thermostatically controlled forced air ventilation shall be pro-vided in all compartments. Each section with capacitor and reactor shall have minimum two cooling fans controlled by a dedicated thermostat. Reactor sections shall have redundant cooling fans and redundant power circuit (if specified).

f. Copper bus shall be provided and properly sized to handle continuous current rating of capacitor bank as well as a minimum of 25% (if future expansion required, specify) future expansion.

g. The reactor shall be (SPECIIFY: de-tuned/ anti-resonant/tuned) to the (SEPCIFY: 4.2nd / 4.4th / 4.7th ) harmonic. The reactor shall have copper windings, iron core, 115°C temperature rise, Class H 220°C insulation system, and VPI varnish. Reac-tors shall be open frame construction. Reactors shall be sized for 160% of full load amps. Reactors shall be sized for the cur-rent harmonic spectrum I1:145%*I,FLA; I5: 35%, I7: 15%, I11:10%, I13:5%.

h. Contactors shall be rated for switching of capacitors by the contactor manufacturer.

i. The automatic harmonic filter equipment shall be warranted by the manufacturer of the capacitor bank.

j. The capacitor bank shall be modular design for ease of future expansion.

k. Capacitor bank shall have a 4-inch base channel.l. Each section shall have a viewing window.m. The main bus and ground bus shall be silver platted copper. n. The bus support insulators shall be 95kV BIL.o. Each stage of the capacitor bank shall be installed in an

individual compartment isolated by steel sheets from other stages.

p. All Fuses shall be rated 50kAIR, full rated for the system voltage class, current limiting type.

q. The equipment shall be modular design with maximum 90-inches wide x 49-inches deep sections.

r. The equipment shall be shipped on wood pallets for ease of handling and installation.

s. Each shipping section shall have removable lifting eyes.t. Each section door shall have warning labels, Danger High

Voltage, Section #, and Caution labels.u. The enclosure steel shall be fabricated at the same mfg.

facility where the capacitor bank is assembled.v. The doors shall have gaskets, heavy-duty hinges, pad lockable

and keyed heavy-duty handles. The doors shall be latched at three points. Doors shall have welded grounding studs and shall be bonded to the equipment ground bus.

w. The roof shall be sloped to the rear. There shall be a drip shield provided over each door.

2. Incoming Section

a. Unit shall have an integrally mounted, assembled isolation disconnect (if specified) with current limiting fuses (if specified), and grounding switch (if specified) OR Incoming section shall have NEMA termination pads with main fuses (or without main fuses).

b. [Distribution/Intermediate class arresters shall be provided for lightning protection. Specify MCOV required]

c. [Current limiting line fuses shall be provided for equipment short circuit protection sized a minimum of 135% of required amperage.]

d. (If specified) Main switch and ground switch shall have exter-nally operable handles with padlocking provisions.

e. Control power transformer shall be provided in each incoming section. The primary of the CPT shall be fused.

f. Current transformer shall be provided for each phase to monitor capacitor bank current. Current transformers shall be multi-ratio with 10 ratio taps so that the ratio can be adjusted for future expansion.

g. Incoming section shall be designed for top, bottom and rear side Customer power cable entry. For bottom entry a remov-able bolted cover plate shall be provided.

h. The incoming section shall have adequate power cable bending radius space for Customer’s cables.

i. The incoming section shall have cable supports for Customer’s power cables.

3. Capacitor Section

a. Capacitors shall be low loss, 2 bushing, properly sized and connected per the specification. The capacitors shall have the following features:

b. Each capacitor cell shall Internal discharge resistors to drain voltage to 50 volts or less in five minutes.

c. Capacitor shall be suitable for operation at 125% of rated nameplate voltage, and 135 percent of rated current minimum.

d. Capacitors shall be rated [60 kV/ 75 kV/95 kV] BIL.e. Capacitors shall be configured in [delta / wye] arrangement.f. A current limiting capacitor fuses with current and voltage

ratings appropriate for the capacitor shall protect stage and capacitors.

g. Capacitors for harmonic filter applications shall be heavy duty, 55°C temperature rating, 125% continuous over-voltage capa-bility, 15 kA fault handling capability, 100 kA transient current withstand capability, and meet IEEE std 18, NEMA and IEC standards.

h. Vacuum contactors shall be rated for capacitive switching. Vacuum contactors shall be rated 7.2 kV, 3-pole for 5 kV systems and 15 kV, 1-pole for 15 kV systems.

i. Each capacitor case shall be grounded to the enclosure ground bus.

j. Each vacuum contactor shall be grounded to the enclosure ground bus.

4. Control Section

a. This section shall include a digital power factor controller with a digital power factor meter.

b. Programmable set points for all functions.c. Stage anti-cycling timers programmable to not less than

5 minutes.d. Power Factor “Out-of-Range” alarm.e. High harmonic content (>5% THD voltage) alarm.f. Manual-Off-Auto toggle switches shall be provided for

operation of the switched steps.g. “Power On” and “Unit Alarm” indicating lights.h. Capacitor “Stage On” indicating lights shall be provided.i. Each stage shall have Manual-Off-Auto switches, stage on

indicator, and counter. The control scheme shall be such that when switching from “Manual” position to “OFF” to “AUTO” or “MAN” position on any stage, that the corresponding stage will not be energized in less than 5 minutes. An interposing timing relay shall be provided to prevent energization of the capacitor stage in less than 5 minutes.



j. A digital multifunction meter/relay shall be included with amps and phase current unbalance functions.

k. Power factor controller shall have the following alarm options which can be programmed by the Customer: over/under compensation, no current signal, step fault, step warning, 20X switching time outside limit, voltage harmonic limit, current harmonic limit, and voltage outside tolerance.

l. Power factor controller shall have password protection.m. Power factor controller shall have field adjustable phase

compensation so that the user can connect the current and voltage measurement signals in any phase orientation so that the user does not have to physically rotate the power cable and/or CT leads to achieve a particular phasing between current and voltage.

n. Power factor controller shall have individual discharge time programmable for each step.

o. Control panel shall be designed for future addition for ___ stages (If future expansion required, specify).

p. Over-temperature alarm/trip shall be provided for each stage.q. Controller shall have control halt and control sleep on/off

settings for each control alarm.r. Controller shall have a digital relay output in addition to the

alarm output.s. Controller shall have programmable switch cycle balancing,

step exchange and control sensitivity settings.t. Control panel shall have 120 V circuit breaker for disconnect-

ing and over-current protection of control wiring.u. Space heater circuit shall be such that the Customer can bring

external power source if needed to power space heaters during storage.

v. The control shall have on delay timers as protection against upstream utility reclosers opening and closing to clear distribution line faults. The start timer shall be adjustable.

w. All timers and settings shall be field adjustable.x. All control wiring shall be minimum #14 AWG, 600 V

5. Key Interlock System (If Specified)

a. Unit main disconnect shall have key lock that, when switch is open, key is removable to unlock opened position on ground switch.

b. The ground switch can then be closed and shall have key interlocks that can be removed in closed position to allow for unlocking doors.

c. The ground switch cannot close unless the disconnect switch is locked open. The ground switch cannot open unless all the capacitor section doors have been locked closed.

d. Optional: time delay entry interlocking can be provided if specified.

e. Optional: open vacuum contactors before opening man switch interlock can be provided if specified.

f. Each door handle shall be heavy duty with padlocking provisions and shall have a keyed lock in the handle.

6. Bank Protection

a. Unit shall have a weatherproof alarm strobe light and dry contacts for customer remote alarm.

b. Power factor controller shall have the following programma-ble alarms and set-points:

1. No current input.

2. Step fault

3. Step warning

4. 20X switching time outside limit

5. Voltage Harmonics overload

6. Current Harmonics overload

7. Control voltage out of tolerance

8. Overcurrent

9. Over/under compensation

c. Capacitors shall be protected with current limiting full voltage rated fuses with blown fuse indication. Fuses shall be 50 kAIR rated for the full system voltage class,

2.03 NAMEPLATES

A. Each unit will have a rating nameplate. The lettering shall be black 3/16-inch high, on a silver background.

B. The main incoming section shall have a rating nameplate located on the inside door in addition to the external nameplate.

2.04 FINISH

A. Metal-Enclosed capacitor equipment enclosures shall be provided with a powder coat paint finish. Exterior color shall be ANSI 61.

B. Each shipping section shall have temporary labels identifying the shipping section number.

PART 3 TESTING AND DOCUMENTATION


A. All capacitors shall be tested in compliance with NEMA, and ANSI requirements for capacitance, dissipation factor, terminal to terminal and terminal to case dielectric strength, and oil leaks. All capacitor cells shall be traceable through construction and testing.

B. The automatic power factor capacitor correction unit shall be tested for proper operation prior to leaving the factory. The certified record of these tests shall become part of the perma-nent documentation package that travels with the automatic capacitor bank. The following checks, measurements, and operations must be confirmed and recorded for each stage:

1. Wire connections

2. Torque connections

3. Phase to Phase resistance checks

4. Phase to Phase capacitance checks

5. Controller operation, manual operation

6. Controller operation, automatic operation

7. Megger Insulation Resistance

8. Hi-pot

9. Reactor inductance test

10. Test meter and controller with secondary current injection.

C. Capacitor bank assembly shall be engineered, manufactured and tested under the supervision of a Registered Professional Electrical Engineer.

3.02 DOCUMENTATION

A. Supplier to provide test reports for capacitors, reactors, and capacitor bank assembly.

B. Supplier to provide handling and installation instructions.

C. Supplier to provide inspection and maintenance schedule.

D. Supplier to provide ISO-9001 certificate for the facility where the capacitor bank will be manufactured.

E. Supplier to provide facilities Quality System Manual.

F. Supplier to provide approval/construction/as-built schematic, outline, settings, and wiring drawings.



Fixed Power Factor Correction Equipment 5 kV Class — Medium Voltage

PART 1 GENERAL

1.01 SCOPE

A. The Contractor shall furnish and install fixed power factor correc-tion equipment as specified herein and as shown on the contract drawings.

B. This specification contains the minimum requirements for the design, manufacture and testing of fixed power factor correction capacitors rated 2400 V, 4160 V, and 4800 V.

C. Power factor correction equipment provided under other sec-tions of the specifications as part of other equipment shall comply with this section of the specifications.


1.02 REFERENCES

A. The power factor correction equipment shall be designed and tested in accordance with the latest standards of NEMA, NFPA, IEEE and ANSI.

B. The equipment shall be CSA certified for Canadian applications.

C. Capacitor shall be designed to NFPA 70 (NEC) sections 460.26, 460.27 and 460.28.




2. Floor plan







B. Instructions

C. Material Safety Data Sheet

1.05 QUALIFICATIONS




A. Equipment shall be handled and stored in accordance with manu-facturer’s instructions. One (1) copy of these instructions shall be included with the equipment at time of shipment.



PART 2 PRODUCT

2.01 RATINGS

A. The system operating voltage (2400 V, 4160 V, or 4800 V) shall be as indicated on the contract drawings.

B. The kVAR for 4.16 kV or 4.8 kV capacitor banks shall be as specified between 25 kVAr to 900 KVAr in increments of 25 kVAr. The kVAr for 2.4 kV capacitor banks shall be as specified between 25 kVAr to 825 kVAr in increments of 25 kVAr.

C. The capacitor shall be rated for continuous duty from -40ºC to +45ºC ambient at 3,300 ft. (1,000 meters) and below.

D. Total Harmonic Distortion (THD) of 5% of voltage waveforms shall not affect the life of capacitors.

E. A +/- 10% variation in line voltage shall not affect the life of the capacitor.

F. The capacitor shall be suitable for operation over a temperature range of -40ºC to +45ºC.

2.02 ENCLOSURE

A. The assembly shall have capacitor cell, capacitor mounting frame for multiple capacitor cells, termination box, current limiting fuses, and viewing window.

B. The enclosure (capacitor cell & terminal box assembly) shall be rated NEMA 1, 3R, and 12.

C. The enclosure steel shall be 14 gauge thick steel.

D. The terminal box inside shall have a grounding stud welded to the frame near the top and front cover.

E. The terminal box inside shall have adequate space for shielded cables and stress cones.

F. The enclosure terminal box shall be designed for top or side entry.

G. The terminal box shall have a removable top and front cover.

H. The viewing window shall be mechanically reinforced in the rear inside.

I. The front cover shall be removable and bolted with platted bolts.

J. The overall dimensions shall not exceed 46”H x 30”W x 22”D.

K. The enclosure front cover shall have gaskets.

L. A ground screw shall be provided inside the termination and suitable for cable shield ground.

M. Capacitors shall include “Danger, turn off power and wait five minutes before working inside unit” labels.

N. A terminal box shall be provided on top of the capacitor cans for power connections.

O. The front removable cover shall have a handle for lifting the front cover.

P. The enclosure shall be designed such that power cables can enter from the top, rear, or either sides.

2.03 CAPACITOR

A. Individual capacitors shall be film/foil design with a biodegradable NFPA Class III B dielectric fluid.

B. Capacitors shall have less than 0.2 watts per KVAR losses and low internal heat generation.

C. Each capacitor cell shall contain less than three gallons of liquid.

D. Capacitors shall be designed to meet ANSI/IEEE standard 18, NEMA CP1, and IEC 871-1.

E. Capacitors shall have “Danger, High Voltage” warning labels.

F. Capacitor case material shall be ANSI 409 stainless steel and painted ANSI#70 grey suitable for outdoor installation.

G. Capacitors shall be 3-phase, 3-bushing, 60kV BIL. (For CSA labeled units the BIL is 75kV).



2.04 DISCHARGE RESISTORS

A. Each capacitor unit shall be provided with an internal discharge resistor to reduce the residual voltage to less than 50 volts within five minutes after the capacitor is disconnected from source of supply.

2.05 FUSES

A. To provide for major fault protection and capacitor case rupture protection, current limiting fuses shall be provided on the capacitor bank.

B. Fuses shall be current limiting and rated 50kAIR.

C. Fuses for 2.4 kV nominal voltage shall be rated 4.3 kV. Fuses for 4.16 kV nominal voltage shall be rated 5.5kV.

D. Each fuse shall be equipped with a pop-up button to provide visual indication of a blown fuse.

E. All three phases for each capacitor shall have fuses. (Option for only two phase fused is available if specified).

F. The top of the fuses shall have a copper “L” bracket for power cable terminations.

G. The bottom of the fuse shall have a external female _” – 13 UNC – 2B.

H. Each fuse blown fuse indicator shall be visible through the viewing window.

2.06 POWER TERMINATIONS

A. Each assembly shall be furnished with 0.562” diameter hole in copper L-bracket on top of the fuse for termination of Customer 1- hole lug.

B. The Customer’s cable termination hole will be supplied with Grade 5 bolts, flat washers, lock washers and nuts.

C. For units with multiple capacitor cells the phase shall be paralleled using silver plated copper bus.

2.07 GROUNDING

A. The capacitor case shall be bonded to the terminal box ground stud.

B. The front removable cover shall have ground stud. The main enclosure steel shall have a grounding stud.

C. The front removable covers shall be bonded to the main ground stud of the terminal box using green grounding conductor.

2.08 MOUNTING

A. The assembly shall have holes in the base frame to anchor the equipment to the floor.

B. For assemblies with multiple capacitor cells the frame shall have provisions for anchoring the floor at four places spaced equally around the equipment.

2.09 NAMEPLATES & LABELS

A. Each unit will have a nameplate in accordance with NFPA 70, Section 460.26. The lettering shall be black on a silver back-ground.

B. The termination box shall have “WARNING HIGH VOLTAGE” label.

C. The termination box shall have “DISCONNECT BEFORE OPEN-ING” label.

D. The termination box shall have “WAIT 10 MINUTES BEFORE TO ALLOW CAPACITORS TO DISCHARGE” label.

2.10 FINISH

A. The paint system shall be suitable for outdoor installation. Exterior color shall be light grey.

PART 3 TESTING


A. All capacitors shall be tested in compliance with IEEE Standard 18 and CSA requirements for capacitance, dissipation factor, terminal to terminal, and terminal to case dielectric strength, and oil leaks.

B. Each capacitor unit shall be tested for low voltage capacitance, ground test over-voltage, dielectric test over-voltage, capacitance measurement, loss measurement, and discharge resistor measurement.

C. Each assembly shall be tested for insulation integrity (Megger) Phase to Ground and Phase to Phase before shipment using 500V Megger output.

D. 60kV Impulse design test shall be done on each design of the capacitor bank. (For CSA labeled units the BIL is 75 kV).

PART 4 SHIPMENT

4.01 PACKAGING

A. The assembly shall be wrapped in plastic and the corners protected with cardboard.

B. Each assembly shall be shipped with a copy of the O&M, MSDS and Test Report.

C. Each assembly shall be bolted to the wood pallets and strapped to the pallet.


Cutler-Hammer, PowerChain Management and Power Xpert are registered trademarks of Eaton Corporation. CSA is a registered trademark of the Canadian Standards Association. NEMA is the registered trademark and service mark of the National Electrical Manufacturers Associa-tion. National Electrical Safety Code is a regis-tered trademark and service mark of the Institute of Electrical and Electronics Engineers, Inc. Modbus is a registered trademark of Modi-con, a division of Schneider Electric Industries SA. UL is a registered trademark of Underwrit-ers Laboratories Inc. ISO is the registered trade-mark and sole property of the International Organization for Standardization.

Eaton CorporationElectrical Group1000 Cherrington ParkwayMoon Township, PA 15108United States877-ETN-CARE (877-386-2273)Eaton.com

© 2008 Eaton CorporationAll Rights ReservedPrinted in USAPublication No. TD02607011E / Z7845November 2008


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