dz7 moulded case circuit breakers · user centric innovation the dsine dz range of moulded case...

User Centric Innovation

Moulded Case Circuit BreakersDZ7

A technology idea often forms the foundation of innovation in a product and the success of its outcome is determined by the users’ experience. Talking to customers and taking their feedback gives an assurance that the innovation would meet the expected and even aspired results. The dsine DZ range is an outcome of users’ feedback that has been recorded, analysed and incorporated in its design and development journey.

About L&T Electrical & Automation

L&T Electrical & Automation (E&A) is a part of US $17 billion Larsen & Toubro that is engaged in technology, engineering, construction, manufacturing and financial services with operations in over 30 countries worldwide. Its business comprises low and medium voltage switchgear products, electrical systems, energy meters, wiring accessories and automation solutions. E&A’s in-house design and development centre for switchgear promotes a culture of collaboration and experimentation that facilitates innovation and creation of intellectual property.

The customer-focus philosophy of E&A has led to setting up of a wide network of channel partners along with manufacturing operations in Navi Mumbai, Ahmednagar, Vadodara, Coimbatore and Mysore in India as well as in Saudi Arabia, Jebel Ali (Dubai), Kuwait, Malaysia, Indonesia and the UK.

User Centric Innovation

The dsine DZ range of Moulded Case Circuit Breakers (MCCB) is a culmination of innovation leading to 150 patents. Designed to meet the requirements of today’s evolving electrical systems in modern installations, the range features significantly higher fault breaking capacities.

Considering the changing expectations of customers and a need for economical and reliable solution, we introduce dsine DZ7 - 800 A MCCB with operational voltages, Ue upto 800 V ac and significantly higher fault breaking capacities up to 200 kA at 415V.

Protection units in thermal magnetic as well as electronic versions offer comprehensive protection for all needs. Range of Advanced current, voltage, frequency, power and harmonic based protections are offered. Systems designers and users thus, have the power to choose and implement the protection schemes suited to their needs.

• Rated currents: 630A, 800A• 3P/4P• Various types of terminations• Draw-out versions• MCCBs for Motor backup protection and Switch disconnector• Conforms to IS 60947-2, IEC 60947-2 and EN 60947-2

500, 630, 800

Electronic

Rated Current (A)

Release

DZ7

Range features:

• Wide range of basic & advanced protections• Individual LEDs for fault indication• Long time (Overload) setting starts from 0.25In for iTRP release• In-built earth fault and neutral protection• In-built LCD display module for metering• Battery operated display for breaker setting & viewing trip records, thus no need

for external power supply• Communicable trip units from 160A to 800A• Available communication protocols- TCP IP, Modbus, Ethernet, IEC 61850

Release

Protection

Display

Communication

iTRP1 iTRP2 iTRP3 iTRP4 iTRP5

LS/IN LSIN LSING

LSING+ Current

metering

LSING+ Advanced

metering & protection

Yes Yes

Yes Yes

Release features:

Double break high breaking capacity contact system

Double insulation

Positive isolation

EMI/EMC compliant as per IEC-60947-2 Annex-F

Shock and Vibration as per IEC-60947-1 Annex-Q

Environmental Category-F as per IEC-60947-1 Annex-Q

RoHS Compliant

IP54 with ROH, IP40 with breaker front as per IEC-60947-1

Salient Features:

Wide range of termination options:

• Direct

• Spreaders

• Rear terminals*

* - Applicable up to 690 V a.c.

# - For details contact nearest branch of?ce

# Draw-out version available

6 cavities in the MCCB for variety of accessories

• Auxiliary contacts - 03 nos.

• Trip Alarm Contact - 01 nos.

• Under voltage release - 02 nos. or Shunt release - 02 nos. or combination of

Under voltage release - 01 nos. and Shunt release - 01 nos.

Electronic releases:

iTRP 1

• Wide range of overload setting from 0.25In

• Adjustable trip class

• Neutral overload protection

• Short circuit setting with delay or instantaneous option

• Thermal memory defeat

• Provision for release testing

or Instantaneous

iTRP1

OverLoad (Phase)

OverLoad (Neutral)

Short Circuit

630, 800

DZ7

0.25 to 1 x In (in step of 0.05)

10s at 6Ir, 3s at 6Ir , 10s at 7.2 Ir, 3s at 7.2Ir

ON/OFF

ON/OFF

OFF / 1.0 x Ir

As per Overload Curve Setting

ON/OFF

1.5 to 10 x Ir (in steps of 0.5) for 630A

1.5 to 8 x Ir (in steps of 0.5) for 800A2

As per I t curve /150ms

ON/OFF



Rated Current

Frame

Current Setting Ir (Ir = x In)

Time delay, Tr (Inverse)

Protection Mode

Thermal Memory

Current Setting In (In = x Ir)


Protection Mode

Current Setting Id (Isd = x Ir)

Time delay, Tsd

2I t

Current Setting Ii (Ii = x In)

LS / IN

iTRP 2




• Short circuit setting with delay

• Adjustable Instantaneous setting

• Separate LED for fault indication



Overload (Phase)

Short Circuit

Overload (Neutral)

iTRP2

Instantaneous

LSIN

Rated Current

Frame



Protection Mode

Thermal Memory



Protection Mode

Current Setting Isd (Isd = x Ir)

Time delay, Tsd

2I t

Protection Mode


Protection Mode

630, 800

DZ7


10s at 6Ir

ON/OFF

ON/OFF

OFF / 0.5/ 1.0/ 2.0 x Ir


ON/OFF

1.5, 3, 4.5, 6, 5.5, 7, 8.5, 10 x Ir (for 630A)

1.5, 3, 3.5, 5, 4.5, 6, 6.5, 8 x Ir (for 800A)

100ms/200ms

ON/OFF

ON/OFF

6 & 10 In for 630A

6 & 8 In for 800A

ON/OFF

iTRP 3




• Short circuit setting with delay

• Adjustable Instantaneous setting

• Separate LED for fault indication

• In-built earth fault protection



Overload (Phase)

Short Circuit

Overload (Neutral)

Earth Fault

iTRP3

LSIN

Frame



Protection Mode

Thermal Memory



Protection Mode

Current Setting Isd (Isd = x Ir)

Time delay, Tsd

2I t

Protection Mode


Protection Mode

Current Setting Ig (Ig = x In)

Time delay, Tg

Protection Mode

Rated Current, In 630, 800

DZ7


10s at 6Ir

ON/OFF

ON/OFF

OFF / 0.5/ 1.0/ 2.0 x Ir


ON/OFF

1.5, 3, 4.5, 6, 5.5, 7, 8.5, 10 x Ir (for 630A)

1.5, 3, 3.5, 5, 4.5, 6, 6.5, 8 x Ir (for 800A)v

100ms/200ms

ON/OFF

ON/OFF

6 & 10 In for 630A

6 & 8 In for 800A

ON/OFF

0.2, 0.4, 0.5, 0.7

100ms/200ms

ON/OFF

Instantaneous

Technical Datasheet

Current Range In(A)

Release

Poles

Impulse Withstand Voltage Uimp(kV)

Rated Operational Voltage Ue(VAC) (MAX) @ 50/60Hz

Rated Insulation Voltage Ui(V AC)

Utilization Category

Standard

Rated Short Circuit Breaking Capacity Icu(kA) @ 800V

Rated Short Circuit Breaking Capacity Ics(kA) @ 800V

Making Capacity (kA) @ 800VAC

Operating Frequency (Hz)

Fingerproof Terminals

Suitable for isolation

IP Class

Pollution Degree

Load-line bias

Ambient temperature

Storage temperature

Mounting positions in vertical plane

Weight(kg) 3P/4P

Mechanical

Electrical @ 415 V AC :630A/800A

Electrical @ 800 V AC :630A/800A

3 Pole

4 Pole

Auxiliary Contact

Trip Alarm Contact

Shunt Release

Under Voltage Release

Rotary Operating Mechanism(Direct/Extended)

Mechanical Interlock Kit

Spreader Terminals

500/630/800

Electronic

3P/4P

8

800

1000

A

IS 60947-2, IEC 60947-2, EN 60947-2

36

30

75.6

20000

5000

2500

50/60

with terminal shrouds

Yes

IP40 from front (for panel cutout area)

III

No

O O-5 C to 55 C

O O-15 C to 70 C

OVertical & 90 both directions

180*250*105

240*250*105

6.9/8.9

03 Aux

01 TAC

�

�

�

TYPE DZ7 - 800Y

Dimensions(W*H*D)(mm)

Life

02 UV or 02 Shunt or 1UV+1Shunt

Internal Accessories

External Accessories

DZ7-800 AS ISOLATOR:

Dsine DZ MCCBs for isolator application offer solution for switching various loads such as UPS, battery banks, etc. with many advantages. These MCCBs differ from regular MCCBs only in terms of absence of protection trip units. These MCCBs can be used for following applications for isolation purpose:

• For local isolation: such as very close to motor load • Incoming of any sub-distribution • As an isolator for bus coupler • As an automatic switch • For switching applications of motors with VFDs, soft starters

Isolator application MCCBs are always backed up by short circuit protection device to protect the downstream loads/installations against short circuit. Following advantages are offered by isolator MCCBs:

• Suitable for positive isolation • Available with 3P and 4P versions • Can be used with under voltage protection • Remote tripping through shunt release • Motor operated MCCBs • Status Feedback possible

Following are the specifications of isolator application MCCBs:

DZ7 800 SD

3,4

AC 22A / AC 23A

IEC 60947-3

800

1000

8

14

75.6

9.4

9.4

6.9 / 8.9

500 / 630 / 800

Parameter

Poles

Utilization category

Standard

Rated operational voltage at 50/60Hz - Ue(V)

Rated Insulation Voltage 50/60Hz - Ui(V)

Rated impulse withstand voltage 50/60Hz - Uimp(kV)

Rated SC making capacity Icm(kA) min

Rated SC making capacity Icm(kA) max

Rated short time withstand current (kA rms) : 1 sec

Rated short time withstand current (kA rms) : 3 sec

Weight 3P/4P MCCB (kg)

Rated operational current (A) dependingupon utilisation category

Ie

Derating Factor at various Ambient Temperatures (I )1

OUpto 40 C

1

O 50 C

1

O60 C

0.95

O70 C

0.85

Altitude Correction Factors

Altitude (m)Rated Continuous

Current (In)Rated Voltage (V)

2000 & below 1.00 1.00

2500 0.99 0.95

4000 0.95 0.80

Altitude Correction Factors

Altitude does not significantly affect circuit breaker characteristics up to 2000m.Above this altitude, it is necessary to take into account the decrease in the dielectric strength and cooling capacity of air.Altitude may reduce Rated Impulse Withstand and Insulation Voltage too.

Ambient Temperature Correction

30 35 40 45 50 55 60 65 70 75

600

610

620

630

640

650

660

670

680

690

700

710

720

730

740

750

760

770

780

790

800

810

820

830

840

850

DZ7 800Y (800A)

DZ7 800Y (630A)

Derating Chart for Dz7

OT ( C)

Iu (

A)

I2T

Overall Dimensions (mm)

Overall Dimensions with Spreader Links (mm)

DZ7-800

DZ7-630

180

60 60

224

60

240

13.2

224

60 30

TerminalLevel

27

155.4*

105

250

3 Pole 4 Pole

210

80 80

43

4

40

4

90

1550

290

80 80 80Ø11 Ø11

43

4

404

50

90

210

8080

2313.5Ø11

43

4

40

4

50

90

15

290

80 80 80

13.5 23 Ø11

43

4

40

4

50

90

Mounting Dimensions (mm)

Panel Cutout (mm)

3 Pole 4 Pole

4 Holes, M5

21

2

60

4 Holes, M5

120

60

29

11

8

22

4

164

Panel door cutout 60

164

11

82

9

Mandatory Ue > 500V AC (mm)

For Ue > V AC, max thickness 1mm

3 Pole 4 Pole

3 Pole 4 Pole

260

210

25 200

25

70

340

290

25

200

10

40

01

04

00

40

0

10

10

40

0

25

Energy-Limiting Curve for d sine-DZ7 @ 800V

Current-Limiting Curve for d sine-DZ7@ 800V

I-rms (kA)1 10 50 100 1000

5

10

15

20

25

3035404550

500

I-p

ea

k (

kA

)

I Prospective

DZ7 -630 /800Y

I-rms (kA)1 10 100 1000

0.1

0.50

10.0

0.600.700.800.90

1.0

2.00

26

Let T

hro

ugh E

nerg

y - A

*s x

10

50

YDZ7 -630 /800

Product improvement is a continuous process. For the latest information and special applications, please contact any of our offices listed here.Product photographs shown are for representative purpose only.

Larsen & Toubro Limited, Electrical Standard Products

Powai Campus, Mumbai 400 072

Customer Interaction Center (CIC)

BSNL / MTNL (toll free) : 1800 233 5858 Reliance (toll free) : 1800 200 5858

Tel : 022 6774 5858

E-mail : [email protected] / Website www.Lntebg.com

Registered Office: L&T House, N. M. Marg, Ballard Estate, Mumbai 400 001, INDIA CIN: L99999MH1946PLC004768

SP 5

0678

R2

dz7 moulded case circuit breakers · user centric innovation the dsine dz range of moulded case...

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