145kV Outdoor Disconnect Switch Substation Double Side Break Isolator Disconnector
General
GW7B isolating switch is a kind of outdoor HV electricity transmission equipments at three-phase AC frequency of 50/60Hz. 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 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 isoalting siwtch adopts CJ2 or SRCJ2 manual actuator to realize the tri-ole linkage. The grounding switch adopts CS11 or SRCS manual actuator to actualize tri-pole linkage. 363kV isoalting switch adopts SRCJ2 motor's actuator to realize the single pole operation; while the grounding switch takes SRCS manual actuator or SRCJ2 motor's actuator to realize the single pole operation and also tri-pole linkage.
Technical Data
| S/N | Item | Unit | Parameter | ||||
| 1 | Rated voltage | kV | 72.5 | 145 | 252 | 363 | 420 |
| 2 | Rated insulation level | ||||||
| 3 | Rated power frequency withstand voltage (1 min) | ||||||
| 4 | To earth | kV | 160 | 275 | 460 | 210 | 520 |
| 5 | Across open breaks | kV | 200 | 275+85 | 460+145 | 210+210 | 610 |
| 6 | Rated lightning impulse withstand voltage | ||||||
| 7 | To earth | kV | 350 | 650 | 1050 | 1175 | 1425 |
| 8 | Across open breaks | kV | 410 | 650+120 | 1050+200 | 1175+295 | 1425+240 |
| 9 | Rated switch impulse withstand voltage (peak) | ||||||
| 10 | between phase/ to earth | kV | -- | -- | -- | 1425/950 | 1574/1050 |
| 11 | Across open breaks | kV | -- | -- | -- | 850+295 | 900+345 |
| 12 | Rated frequency | Hz | 50/60 | 50/60 | 50/60 | 50/60 | 50/60 |
| 13 | Rated current | A | 1250 2000 2500 3150 4000 | 1250/2000 | 2000 2500 3150 4000 5000 | 31,505,000 | 3150 |
| 14 | Rated short-time withstand current | kA | 40 50 | 31.5/40 | 50/63 | 160 | 160 |
| 15 | Rated peak withstand current | kA | 100 125 | 80/100 | 125/160 | 63 | 63 |
| 16 | Rated duration of short circuit | s | 4 | 4 | 3 | 3 | 2 |
| 17 | Rated terminal mechanical load | ||||||
| 18 | Horizontal -logntitudinal | N | 750/1000 | 1250 | 1500 | 2500 | 2000 |
| 19 | Horizontal- vertical | N | 500/750 | 750 | 1000 | 2000 | 660 |
| 20 | Vertical force | N | 750 | 1000 | 1250 | 1500 | 1500 |
| 21 | Isolating switch bus capacity of switching currents and opening/ closing | 100V, 1600A, 100 times | 100V, 1600A, 100 times | 300V, 1600A, 100 times | 450V, 3200A, 3times 400V, 1600A, 100 times | 300V, 1600A, 100 times | |
| 22 | Grounding switch induction current open/ closing capacity | ||||||
| 23 | Electromagnetic induction-typ current (current/ voltage) | A/kV | 100/4 (80/2) | 100/6 (80/2) | 160/15 (80/3) | 1250/35 (160/10) | 160/10 (80/2) |
| 24 | electrostatic induction current (current/ voltage) | A/kV | 2/6 | 5/6 (2/6) | 10/15 (3/12) | 50/50 (18/17) | 18/20 (1.25/5) |
| 25 | Times of opening and closing | times | 10 | 10 | 10 | 10 | 10 |
| 26 | isolating switch small current open/ closing capacity | ||||||
| 27 | capacitive current | A | -- | 1 | 1 | 1 | 1 |
| 28 | Inductive current | A | -- | 0.5 | 0.5 | 0.5 | 0.5 |
| 29 | RIV radio interference voltage | uV | <500 | <500 | <500 | <500 | <500 |
| 30 | Creepage distance | mm | >1813 2248 | >3625 4495 | >6300 7812 | >9450 | >10500 |
| 31 | Mechnical endurance | times | 5000 | 5000 | 1000 | 5000 | 10000 |
| 32 | Applicable altitudes | <2000 | <2000 | <2000 | <3000 | <1000 | |
| 33 | Motor operating mechanism | ||||||
| 34 | Model | CJ2 | CJ2 | SRCJ2 | SRCJ2 | SRCJ2 | |
| 35 | Motor voltage | V | AC 380 DC220 | AC 380 DC220 | AC 380 DC220 | AC 380 DC220 | AC 380 DC220 |
| 36 | Control circuit's voltage | V | AC 220 DC220 DC110 | AC 220 DC220 DC110 | AC 220 DC220 DC110 | AC 220 DC220 DC110 | AC 220 DC220 DC110 |
| 37 | Opening time and closing time | s | 7+1 | 7+1 | 16+1 | 16+1 | 16+1 |
| 38 | Output shaft rotation | 180 | 180 | 180 | 180 | 180 | |
| 39 | Manual operating mechanism | ||||||
| 40 | Model | CS11 | CS11 | SRCS | SRCS | SRCS | |
| 41 | control circuit voltage | V | AC 220 | AC 220 | AC 220 | AC 220 | AC 220 |
