Product Overview:GW7B outdoor HV AC disconnect switch
GW7B disconnect switch is a kind of outdoor HV electricity transmission equipment at three-phase Ac frequency of 50Hz/60Hz. it is used for breaking or connecting HV lines under no loads so that these lines can be changed and connected and the way the electricity runs is changed, in addition, it can be used to exercise safe electrical insulation for such HV electric apparatuses as bus and breaker, The switch can open and close inductance/capacitance current and is able to open and close the bus to switch current.
This product has three posts with; horizontal open breaks. JW10 grounding switches may be attached to the product at one or two sides.72.5-252kV disconnect switch adopts CJ2 or SRCJ2 manual actuator to realize the tri-pole linkage. The earthing switch adopts CS11 or SRCS manual actuator to actualize tri-pole linkage.363kV disconnect switch adopts SRCJ2 motor's actuator to realize the single pole operation; while the earthing switch takes SRCS manual acualor or SRCJ2 motor's actuator to realize the single pole operation and also tri-pole linkage.
Specifications and Parameters:
| Item | unit | parameters | ||||||||
| Product model | GW7B-72.5D(G-W) | GW7B-145D(W) | GW7B-252D(G-W) | GW7B-363D(G-W) | GW7B-420D(W) | GW7B-550 | GW7B-800D(W) | |||
| Rated voltage | kV | 72.5 | 145 | 252 | 363 | 420 | 550 | 800 | ||
| Rated insuiating level | Rated Power Frequency With-stand Voltage(1min) | To earth / phase to phase | kV | 204.8 | 380 | 588.8 | 510 | 520 | 740 | 960 |
| Across isolating device | 256 | 444 | 588.8(+185.6) | 510(+210) | 610 | 740(+318)/800 | 960(+462) | |||
| When the shortest distance occurs in the opening and closing of earthing switch | 107.52 | 210 | 372.48 | 419 | 484 | |||||
| Rated Lightening impulse with-stand vollage | To earth / phase to phase | 448 | 870 | 1344 | 1175 | 1425 | 1675 | 2100 | ||
| Across isolating device | 524.8 | 1043 | 1344(+256) | 1175(+295) | 1425(+240) | 1675(+450) | 2100(+650) | |||
| Rated operating impulse with-stand voltage (peak) | To earth / phase to phase | —— | —— | —— | 1425/950 | 1575/1050 | 1950/1300 | 2635/1550 | ||
| Across isolating device | —— | —— | —— | 850(+295) | 900(+345) | 1175(+450) | 1425(+650) | |||
| Rated Frequency | Hz | 50/60 | 60 | |||||||
| Rated Current | A | 1250.2000/ 2500.3150.4000 |
1250/2000 | 2000/2500. 3150.4000.5000 |
3150.5 | 3150 | 3150 | 5000 | ||
| Rated peak withstand current | kA | 100/125 | 80/100 | 125/160 | 160 | 160 | 63 | 160 | ||
| Rated short-time wilhstand current | 40/50 | 31.5/40 | 50/63 | 63 | 63 | 160 | 63 | |||
| Rated duration of short circuit | S | 4 | 3 | 2 | 2 | 3 | ||||
| Rated terminal Mechanical load | horizontal-longitudinal | N | 750/1000 | 1250 | 1500 | 2500 | 2000 | 3000 | 3000 | |
| horizontal-lateral | 500/750 | 750 | 1000 | 2000 | 660 | 2000 | 2000 | |||
| Vertical force | 750 | 1000 | 1250 | 1500 | 1500 | 2000 | 2000 | |||
| Bus-transfer curent switching capability of disconnectors | 100V.1600A 100times |
100V.1600A 100times |
435V.3000A 100times |
435V.3000A 100times |
350V.1890A 100times |
400V.1600A 100times | ||||
| induced current switching capability of earthing switch | Electromagnetic induction-type current (current/voltage) | A/kV | 100/4(80/2) | 100/6(80/2) | 160/15(80/2) | 1250/35(160/10) | 160/10(80/2) | 160/10 | 200/2(80/2) | |
| Electrostatic induction-type current (current/voltage) | A/kV | 2/6 | 5/6(2/6) | 10/15(3/12) | 50/50(18/17) | 18/20(1.25/5) | 18/20 | 25/100(3/12) | ||
| Times of opening and closing | Times | 10 | ||||||||
We offer the most advanced engineering design solutions and product technology solutions to global power customers, and continue to create value for the commercial success of global power customers.
EN
AR
BG
HR
CS
DA
FR
DE
EL
HI
PL
PT
RU
ES
CA
TL
ID
SR
SK
SL
UK
VI
ET
HU
TH
MS
SW
GA
CY
HY
AZ
UR
BN
LO
MN
NE
MY
KK
UZ
KY
