Sandi XGN2-12 Fixed AC Metal-enclosed switchgear
Product Description
◇Introduction
The XGN2-12 (Z) box-mounted AC metal-enclosed switchgear, for rated frequency 50Hz, rated voltage of 3.6 ~ 12KV, rated current 630A ~ 3150A three-phase AC single busbar, double busbar and single busbar with bypass systemas the acceptance and distribution of electric energy.To meet all types of power plants, substations, and industrial and mining use requirements.
Implementation of national standards
GB3906 "3 ~ 35KV AC Metal-enclosed switchgear"
IEC60298 "AC metal-enclosed switchgear and control equipment "
DL/T402-1999 "AC high voltage circuit breaker orders technical conditions "
DL/T404-2007 "3.6kV to 40.5kV AC metal-enclosed switchgear and control equipment"
◇normal use conditions
1.An ambient air temperature: -15℃～ +40℃.
2.Altitude: no higher than the 1000M.
3. Humidity:
Average less than 95%, the vapor pressure of the daily average does not exceed 2.2KPA.
On average less than 90% water vapor pressure on average less super 1.8KPA.
4.seismic intensity: No more than 8 degrees.
5.there is no corrosive or flammable gases significantly contaminated sites.
Note: There are special requirements can be resolved through consultation with the Company
◇Model defined
◇Main technical parameters
◇Structural characteristics
1.The switchgear is metal-enclosed box-type structure, cabinet skeleton FA38 specific sections of assembly or angle iron welded together, and KS profiles can also be assembled, the cabinet is divided into a circuit breaker room, busbar, cable room, instrument room, roomand between rooms separated by a steel plate.
2.Breaker room in the cabinet before the lower part of the circuit breaker terminal blocks with isolation switch connected, the circuit breaker connection terminals and current transformers, current transformers and isolation switch terminal to connect the circuit breaker room also hasThe pressure release channel, the internal arc occurs, the gas through the exhaust channel pressure release.
3.Busbar room in the cabinet after the upper part, in order to reduce the height of the cabinet, the bus was a triangle arrangement of support 7350N bending strength of porcelain insulators, bus and isolation switch terminals connected to two adjacent cabinet busbarcan be isolated.
4.cable room in the rear of the cabinet lower part, the cable indoor supporting insulator with voltage monitoring devices, cable bracket for the main wiring as a liaison program, the room was to contact the cable room. Relay room at the front of the upper cabinets, indoor mounting plate can be installed on a variety of relays, etc., indoor terminal block bracket can be installed on the door indicating instrument, the signal components and secondary components, also layout at the top of the second small bus.
5.The circuit breaker operating mechanism is mounted on the front left position, the top of the isolation switch operation and interlocking institutions. Switchgear as a double-maintenance of the secondary component of the relay room, in front of overhaul and maintenance of the actuator, mechanical interlock, and transmission parts, maintenance breaker. Behind the maintenance of the main busbar and cable termination in the breaker room is equipped with lights. The front door has a parallel with the direction of the cabinet width below ground copper bus, cross-section as follows: 8 × 30mm.
6.Corresponding reliable mechanical interlock: In order to prevent the division and with the load isolation switch prevent misclassification mistakenly close the breaker to prevent mistakenly charged interval; Antistatic closing earthing switch; to prevent the misuse of the earth knife closing position the circuit breaker, switchgear hasmechanical interlock to ensure safe operation
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