Description
The SM6 medium voltage switchgear is a metal sealed extensible modular product. According to the application requirements, it can be equipped with the load switch, breaker, AC contactor, and isolation switch.
Depending on the switch type, the switchgear can be divided into the following types:
1. IM--Load switch cabinet
2. QM--Load switch + fuse + earthing switch cabinet
3. IMC--Load switch + CT cabinet
4. QMC--Load switch + fuse + grounding switch + CT
5. DMI--Isolation switch + circuit breaker cabinet
6. CRM--Isolation switch + fuse + contactor + earthing switch
7. NSM--Dual power line counters
Features
1. SM6 medium voltage switchgear includes a load switch, Fluarc SFI or Sfonr breaker, Rollarc400 or 400D contactor, and an isolation switch.
2. It is often used in the secondary substation and distribution station with the rated voltage of 24 KV in the industrial and mining enterprises.
3. This switch cabinet is 375-750mm in width, 1600mm in height, and 840mm in depth. This small size brings convenience to installation and operation.
4. It is generally installed in the distribution room or package substation. Cables are connected at the bottom. All control units are on the operation panel, which simplifies operation. Coils, instrument transformers, and other accessories can be equipped.
5. Our product conforms to the GB3906 and IEC298 standards.
Item | Data | ||||
Rated voltage (KV) | 7.2 | 12 | 24 | ||
Power frequency withstand voltage (KV, valid value), 50HZ, 1 min | To ground | 28 | 42 | 50 | |
Between fractures | 32 | 48 | 60 | ||
Impulse 1.2/50μS (KV, valid value) | To ground | 75 | 95 | 125 | |
Between fractures | 85 | 110 | 145 | ||
Unloaded transformer breaking capacity (A) | 16 | ||||
No-load cable breaking capacity (A) | 25 | ||||
Short time withstand current | 25KA/1s | 630-1250A | |||
20KA/3s | 630-1250A | ||||
Rated closed loop breaking current | 630A | ||||
5% rated load breaking current | 31.5A | ||||
Rated load breaking current | 630A | ||||
Short time peak withstand current of main switch and earthing switch | 50KA | ||||
Thermal current of main switch and earthing switch | 20KA/3S | 20KA/1S |