Ningbo Tianan (Group) Co.,Ltd.
Ningbo Tianan (Group) Co.,Ltd
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145kV Outdoor Isolator Hv Disconnect Switch For Breaking Or Connecting HV Lines
GW4A-126 D(W) isolating switches are kinds of outdoor HV electricity transmission equipments at three phase AC frequency of 50Hz/60Hz. It is used for breaking or connecting HV lines under no loads so that the power lines can be changed and connected and the way the electricity runs is changed. In addition, it can be used to exerise safe electrical insulation for such HV electric apparatuses as bus and breaker.
This product has two insulators with horizontal center breaks. It is openable in the middle and accessible to the grounding switch on one side or two sides. The isolating switch adopts CS14G or CS11 manual operating mechanism ro CJ2 motor based operating mechnism to realize the tri-pole linkage. The grounding switch adopts CS14G manual operating mechanism to actualize tri-pole linkage.
| S/N | Item | Unit | Parameter |
| 1 | Rated voltage | kV | 145 |
| 2 | Rated insulation level | ||
| 3 | Rated power frequency withstand voltage (1 min) | ||
| 4 | To earth | kV | 275 |
| 5 | Across open breaks | kV | 275+85 |
| 6 | Rated lightning impulse withstand voltage | ||
| 7 | To earth | kV | 650 |
| 8 | Across open breaks | kV | 650+120 |
| 9 | Rated frequency | Hz | 50/60 |
| 10 | Rated current | A | 1600 25000 3150 4000 |
| 11 | Rated short-time withstand current | kA | 40 50 |
| 12 | Rated peak withstand current | kA | 100 125 |
| 13 | Rated duration of short circuit Primary switch/ earthing switch | s | 3/3 |
| 14 | Rated terminal mechanical load | ||
| 15 | Horizontal -logntitudinal | N | 1250 |
| 16 | Horizontal- vertical | N | 750 |
| 17 | Vertical force | N | 1000 |
| 18 | Creepage distance | mm | 3150 3906 |
| 19 | Mechnical endurance | times | 10000 |
| 20 | Motor operating mechanism | ||
| 21 | Model | CJ2 | |
| 22 | Motor voltage | V | AC 380 DC220 DC110 |
| 23 | cControl circuit's voltage | V | AC 380 AC 220 DC220 DC110 |
| 24 | Opening time and closing time | s | 7+/-1 |
| 25 | Manual operating mechanism | ||
| 26 | Model | CS14G | |
| 27 | Electromagnetic lock's voltage | V | AC 380 DC220 DC110 |
