Application:
GW5-126 high voltage insulator switch is three phase current 50Hz outdoor high voltage current electrical appliances,used for 110kV rated voltage power system,
for the high voltage line under the condition of no-load current switching circuit and on the maintenance of electrical equipment such as high voltage bus、
circuit breaker etc. Electrical equipment and live high voltage wire electrical isolation,provide a visible isolated distance for the inspectors and maintenance staff,
in order to protect the security of the maintenance staff.
Operating environment condition:
1. The elevation not exceed: 2000m
2. Environment temperature: -40℃~+40℃
3. Maximum windy speed:34m/s
4. Earthquake resistance ability: level acceleration:0.250g vertical acceleration: 0.125g
5. Ice thickness not exceed: 10mm
6. Insulator pollution level:Ⅲ(25mm/kV）、Ⅳ(31mm/kV)
7. Installation place free from the harmful material of flammable,explosive,chemical corrosion,etc,
should be free of frequent and violent shaking.
Main technology parameter:
Item | Unit | Parameter | ||
Rated voltage | kV | 126 | ||
Rated current | A | 2000 | ||
Rated peak withstand current( peak) | kA | 100 | ||
3S rated short-time withstand current(effective) | kA | 40 | ||
Rated frequency | Hz | 50 | ||
Grounding switch | Rated peak withstand current( peak) | kA | 100 | |
3S rated short-time withstand current( effective) | kA | 40 | ||
Grounding terminal rated pull | lengthways | N | 1000 | |
widthways | N | 750 | ||
vertical | N | 1000 | ||
Rated isolation level | Rated short-time frequency withstand voltage( effective) | grounding | kV | 230 |
Open contacts | kV | 230+70 | ||
Lightning impacting tolerance withstand voltage( effective) | Grounding | kV | 550 | |
Open contacts | kV | 550+100 | ||
Grounding switch induction current opening and closing ability test | Electromagnetic coupling | Rated induction current | A | 50 |
Rated induction current | kV | 0.5 | ||
Electrostatic coupling | Rated induction current | A | 0.4 | |
Rated induction current | kV | 3 | ||
Post insulator creep-age distance | Ⅲ | mm/kV | 25 | |
Ⅳ | 31 | |||
Mechanic lifetime | times | 3000 | ||
Insulator switch circuit resistance | μΩ | 85 | ||
Open and close bus switching current | A | 1600 | ||
Uni-polar weight | 230 |
Ordering instruction:
1. Insulator type、specification、numbers
2. Rated current、rated short-time and peek withstand current、porcelain bottle pollution-proof level.
3. Need grounding knife or not, which side, need magnetic lock or not--please remark.
4. Electrical operating construction’s motor voltage、control voltage、assistant switch poles.
5. Please kindly remark if there is another special requirements.
