KYN28-12 type indoor metal armored withdrawable switchgear is made up of aluminum-zinc plate bending and combined, fully enclosed structure. In the cabinet, thin steel plates are used to separate four chambers, which are connected by bolts. The upper part is the busbar chamber, the middle part is the handcart chamber, and the lower part is the cable chamber. Instruments and relays are installed in the instrument room in front of the upper part of the cabinet. It has the functions of overhead incoming and outgoing lines and left and right connections.
It is mainly used for power transmission of power plants and small and medium-sized generators, power distribution of industrial and mining enterprises, power reception and power transmission of secondary substations of power systems, large-scale high-voltage motors, etc. It is used for control, protection and detection.
This product complies with GB3906-2006 "3-35KV AC metal-enclosed switchgear", GB/T11022 "Common technical requirements for high-voltage switchgear and control equipment standards", IEC298 "AC metal-enclosed switchgear control equipment" and other standards.
Name | Unit | Technical parameter | |
Rated voltage | KV | 3;6;10 | |
Maximum working voltage | KV | 3.6;7.2;12 | |
Rated insulation level | Imin power frequency withstand voltage | KV | 42 |
Lightning impulse withstand voltage | KV | 75 | |
Rated frequency | Hz | 50 | |
Rated current of main busbar | A | 630;1250;1600;2000;2500;3150 | |
Rated current of branch busbar | A | 630;1250;1600;2000;2500;3150 | |
4S thermal stable current | KA | 16;20;25;31.5;40;50 | |
Rated peak withstand current | KA | 40;50;60;80;100;125 | |
Protection class | The enclosure is IP4X, and the isolation room and circuit breaker room door is IP2X when opened |