ADB

ANSI C37 / IEEE 693 / IEC 62271

Aluminium Double BreakDisconnect Switch38 TO 500kv / 600 TO 4000A

MindCore Technologies ADB is a station class double break switch, designed to utilize the high strength and lightweight characteristics of aluminum alloys, combined with time-tested silver brazed copper contacts that are highly visible and easily replaceable. The center stack supports the blade and rotates to operate the switch. The blade swings through 65˚, either clockwise or counter-clockwise in a plane parallel to the switch base. Aluminum conducting joints are protected with an oxide inhibitor to prevent the formation of aluminum oxide. Copper contacts are tinned at attach point to aluminum surfaces to prevent galvanic corrosion and are further protected by an inhibitor on the aluminum surfaces. The ADB switch is a proven design and has been installed within the North American substations for the past 35 years.

PRODUCT FEATURES

APPLICATION

The most common application of the type ADB switch is as a bus tie switch where both ends of the switch may be energized. It is also preferred by substation engineers for isolating, bypassing or sectionalizing lines of electrical apparatus. Since the double break’s switch blade is never live when in the open position, overhead clearances and phase spacing can be kept to a minimum making the ADB an excellent choice for tight substation designs. The switch poles may be mounted in a horizontal upright, inverted or semi-inverted position. Switches up to 750kV BIL may also be mounted in the vertical position.

CONTACT

Silver to silver, high pressure, self-wiping, reverse loop female contacts provide maximum dependability under normal and short circuit conditions. Reverse loop contacts exploits the effect of increasing current to increase contact pressure during short circuit conditions. Normal contact pressure is maintained by insulated stainless steel compression springs. Female contacts are of high conductivity hard-drawn copper and the contact support is made from high conductivity aluminum alloy. The male contacts are of high conductivity copper that is secured to the blade contact seat. All contacts are silver brazed to ensure maximum durability.

Due to the shape of the contact surfaces, with the blade closed, the contact pressure remains unchanged with normal variations in alignment or adjustment. Both male and female contacts are easily replaceable.

BLADE AND OPERATINg mEChANISm

Rotation of the center insulator stack causes the blade to swing into the jaw and to rotate to engage contact. The blade operating mechanism is housed in an aluminum alloy housing which protects it from moisture and contamination. Self-lubricating bearings are used to support the blade and assure exceptionally low frictional effort in operation. The rolling mechanism provides wiping action of the contacts which helps to clean the contact surfaces during normal operation of the switch.

Aluminum current carrying parts design

Silver-to-silver, high pressure, self-wiping contacts

Reversed loop design on jaw sides

Rotating blade principle for excellent ice breaking ability

Weather and corrosion resistant housing

Standard 3 sets of NEMA terminal pads

Available in ‘W’ configuration for transmission applications

gROUND SWITCh

A three pole CGS or GAV combined grounding switch may be fitted to either end of an ADB disconnect. This switch features high momentary, high pressure contacts and an aluminium blade. The ground switch can be mechanically interlocked with the main switch to prevent inadvertent grounding of the circuit.

TERmINAL PADS

Terminal pads have hole spacing in accordance with NEMA standards and are machined flat to ensure low contact resistance. All switches have two horizontal and a vertical terminal pads at both ends. Terminal pads are 4 holes NEMA for 1200A/2000A and 6 holes NEMA for 3000A/4000A.

SWITCh BASEA rigid base is essential to optimal switch operation. The galvanized base frame design is chosen adequately to suit the voltage and current level of the switch application.For our ADB design, we supply welded base frame con-struction for switches above 72kV.

PIvOT ASSEmBLIESThe pivot assembly is one of the key components for a disconnect long term durability. The ADB is using a pivot design that has been proven over the years and that went through a 0.5g seismic test, when installed on a 362kV- 1470kV AV2 model. Machined aluminum housing, sealed stainless steel bearing (tapered or ball) and robust stain-less steel shaft are the fundamental materials to be used for a REAL maintenance free pivot assembly.

OPTIONNAL FEATURES - Arcing horns

- High velocity whip

- Auxiliary contacts adaptable on any vertical operating pipe

- Open/close position indicator

- Key interlock hardware provision

- Electrical interlock

- Insulator outrigger fixed on base frame

- Multi-revolution grounding device

- Seismic rated support structure

- Any specific customer requirement

OPERATORS - Manual torsion handle

- Manual worm gear

- Manual hand wheel

- Motor operator 180 degree (MSO1/2)

- Motor operator multi-revolution (MSO5)

C O N TA C T

Rated  Maximum  Voltage

Rated  Lightning  Impulse

Rated  Continuous  Current

Withstand  Short-­‐time  Current

Overall  Length

Terminal  Pad  Height

WidthStandard  Mounting  

Holes  Length

Standard  Mounting  

Holes  WidthWeight

kV  RMS kV  Peak A kA in  (mm) in  (mm) in  (mm) in  (mm) in  (mm) lbs  (kg)

ADB03412 1200 44

ADB03420 2000 63

ADB03430 3000 63

ADB03440 4000 75

ADB04612 1200 44

ADB04620 2000 63

ADB04630 3000 63

ADB04640 4000 75

ADB07212 1200 44

ADB07220 2000 63

ADB07230 3000 63

ADB07240 4000 75

ADB11512 1200 44

ADB11520 2000 63

ADB11530 3000 63

ADB11540 4000 75

ADB13812 1200 44

ADB13820 2000 63

ADB13830 3000 63

ADB13840 4000 75

ADB16112 1200 44

ADB16120 2000 63

ADB16130 3000 63

ADB16140 4000 75

ADB23012 1200 44

ADB23020 2000 63

ADB23030 3000 63

ADB23040 4000 75

ADB24512 1200 44

ADB24520 2000 63

ADB24530 3000 63

ADB24540 4000 75

ADB34512 1200 44

ADB34520 2000 63

ADB34530 3000 63

ADB34540 4000 75

ADB50012 1200 44

ADB50020 2000 63

ADB50030 3000 63

ADB50040 4000 75

3"  or  8  ¼"(76  or  210)

331(150)

1029(468)

1889(859)

1341  (610)

1667(758)

406(185)

872(396)

963(438)

12"(305)

12"(305)

8  ¼"(210)

12"(305)

267(121)

324(147)

388(176)

111"(2820)

78"(1981)

78"(1981)

78"(1981)

10  ⅝"(270)

102  ½"(2604)

67"(1702)

76"(1930)

114  ½"(2908)

10  ⅝"(270)

10  ⅝"(270)

10  ⅝"(270)

Catalogue  Number

59  ½"(1511)

66  ½"(1689)

54"(1370)

3"  or  8  ¼"(76  or  210)

69"(1750)

3"  or  8  ¼"(76  or  210)

48"(1220)

48"(1220)

3"  or  8  ¼"(76  or  210)

54"(1370)

3"  or  8  ¼"(76  or  210)

32  ⅛"(816)

37  ¾"(959)

10  ⅝"(270)

10  ⅝"(270)

45  ¾"(1162)

10  ⅝"(270)

84"(2134)

87"(2210)

8  ¼"(210)

99"(2510)

125  ½"(3188)

143  ½"(3645)

80  ½"(2045)

101  ½"(2578)

113  ½"(2883)

118  ½"(3010)

130  ½"(3315)

148  ½"(3772)

145 650

170 750

245 900

48,3 25071  ½"(1816)

39  ⅞"(1013)

10  ⅝"(270)

38 20064  ½"(1638)

34  ¼"(870)

10  ⅝"(270)

78"(1981)

10  ⅝"(270)

99"(2510)

8  ¼"(210)

1024(465)

69"(1750)

3"  or  8  ¼"(76  or  210)

464(211)

123 550106  ½"(2705)

69"(1753)

10  ⅝"(270)

87"(2210)

8  ¼"(210)

931(423)

72,5 35085  ½"(2172)

47  ⅞"(1216)

10  ⅝"(270)

10  ⅝"(270)

10  ⅝"(270)

8  ¼"(210)

104  ½"(2654)

10  ⅝"(270)

78"(1981)

12"(305)

1404(638)

86"(2184)

10  ⅝"(270)

111"(2820)

8  ¼"(210)

1090(495)

12"(305)

1731(787)

362 1300196  ½"(4991)

130  ½"(3315)

10  ⅝"(270)

78"(1981)

12"(305)

1955(889)

1050172  ½"(4382)

116  ½"(2959)

10  ⅝"(270)

78"(1981)

167  ½"(4255)

191  ½"(4864)

245

128  ½"(3264)

3067(1394)

3067(1394)

500 1550

12"(305)

12"(305)

78"(1981)

78"(1981)

10  ⅝"(270)

10  ⅝"(270)

291  ¼"(7398)

291  ¼"(7398)

150  ½"(3821)

150  ½"(3821)

MindCore Technologies

1845 Jean-Monnet

Terrebonne (Quebec) J6X 4L7

Canada

Tel: +1 450.477.5959

Fax: +1 450.477.2220

www.mindcoretech.com

info@mindcoretech.com

TEChNICAL DRAWINg

SPECIFICATIONS

ANSI C37 / IEEE 693/ IEC 62271