1. Reliable operation.
2. supplier for China State Grid.
3. IEC and GB (China standard) standard
4. 11KV,12KV disconnector.
Single-phase switch disconnector is a single-phase hookstick operated switch, used for isolating from 12kV overhead transmission line. It is widely used to combine with circuit breaker or load switch to provide safe visible isolating distance for circuit. The switch can realize switch on-off operation in the state of non-load.
The product conforms with the standard as follows:
IEC 62271-102 | 3.6KV-40.5KV high voltage alternating isolated switch and earthing switch |
GB/T 11022 | common technical standard of high voltage switchgear and control equipment |
GB1985 | high voltage altering isolating switch and earthing switch |
GB/T 5582 | electric equipment external insulation pollution degree
|
GB/T 311.2 | insulation coordination of high voltage transmission and distribution equipment |
Product technical parameter
Product type | DCD-12/630 | DCD-12/900 | |
Rated voltage | 12kV | 12kV | |
Rated current | 630A | 900A | |
Rated frequency | 50Hz | 50Hz | |
Rated momentary withstand current | 25kA/3s | 25kA/3s | |
Rated peak withstand current | 65kA | 65kA | |
Rated power frequency withstand voltage (dry withstand,1 minute) | to earth | 54kV | 54kV |
across isolating distance | 61.5kV | 61.5kV | |
Rated power frequency withstand voltage (wet withstand,1 minute) | to earth | 38.5kV | 38.5kV |
across isolating distance | 46.5kV | 46.5kV | |
Lightning impulse withstand voltage(BIL) | to earth | 110kV | 110kV |
across isolating distance | 110kV | 110kV | |
Creepage distance | ≥ 496mm | ≥ 496mm | |
Creepage proportion | ≥41mm/kV | ≥41mm/kV | |
Loop resistance | ≤62μΩ | ≤62μΩ | |
Mechanical life (on/off times) | 2500 | 2500 | |
Weight | ≈7kg | ≈8kg | |
Configuration explain
1. Terminal pad: high conductively silver-plated copper, oxidating resistant, remain silver to silver contact.
2. Pull-ring and locking device: equipped with the cast copper latch, can operate the switch in any angle.
3. Copper blade: is made of copper, the double deck blade processed with hard-drawn technology for superior stiffness.
4. Insulator: is made of high intensity silicon rubber.
5. Base plate: is made of high intensity steel plate processed with hot dip galvanized anti-corrosive technology, and provide different sizes to suit different spaces for installation , has advantage of reliable operation and anticorrosive properties.
6. Serrated slots: equipped with square neck bolt and provide different sizes to suit different spaces for installation.
Installation dimensions
