high voltage ring network switching equipment XDN □ -40.5 KV
XGN □ -40.5 box fixed AC metal-enclosed switchgear according to GB3906-2006 and design. It is suitable for three-phase AC rated frequency 50Hz single bus and single bus with bypass system indoor unit, as the acceptance and distribution of 35kV network power use, and has the circuit control, protection and monitoring functions.
Use of the environment
1. Ambient air temperature upper limit: ± 40 ℃, lower limit: -10 ℃, the daily average temperature does not exceed 35 ℃;
2. Altitude not exceeding 1000m;
3. The relative daily average temperature is not greater than 95%, the monthly average of not more than 90%;
4. Earthquake intensity does not exceed 8;
5. Water vapor pressure on the average of not more than 2.2Kpa, the monthly average of not more than 1.8Kpa;
6. No fire, explosion hazard, serious pollution, chemical corrosion and severe vibration of the place.
Rated voltage (KV): 40.5
Power frequency withstand voltage (KV): 95 (1min)
Impulse withstand voltage (KV): 185
Rated frequency: 50Hz
Main busbar rated current (A): 1250/1600/2000
Rated current of supporting busbar (A): 630/1250/1600/2000
Rated thermal stability current (KA 4S): 25 / 31.5
Rated dynamic and stable current (KA): 63/80
Rated short - circuit breaking current (KA): 25 / 31.5
Rated short-circuit closing current (KA): 63/80
(V) DC: 24, 36, 48, 60, 110, 220, AC: 110, 220
Protection class: IP3X
XGN □ -40.5 box-type fixed AC metal-enclosed switchgear is a fixed-mounted assembly structure, the basic skeleton of welded steel and steel bending parts, cabinet enclosure with IP3X protection. The switchgear is mainly assembled from the front cabinet and the rear cabinet, and the corresponding functional units are set for different purposes. The air insulation is mainly between the charged bodies in the cabinet, and the insulation distance between each charged body and the relative ground Not less than 300 mm. 1) Front cabinet: The front cabinet is equipped with main busbar and busbar isolating switch room, breaker room, relay room, main busbar and busbar isolating switch room above the cabinet, and the circuit breaker room is arranged below the cabinet. Current transformer, two rooms are separated by insulation board, connected through the bus sleeve. The terminal is located in the lower left door, can be installed JH10-type terminal 80 or more, the room is also set below the M12 of the ground. The terminal is located in the middle of the cabinet, a small busbar terminal, a total of 15 knots, and a two-wire cable channel. Bolt for the auxiliary circuit ground, the right door for the maintenance of small access. Above the terminal chamber is the operation panel, and the auxiliary switch can be installed. 2) After the cabinet: the rear cabinet bolts and front cabinet connected to the cabinet can be set according to the need to bypass the bus and isolation switch, the overhead line from the cabinet through the set bypass bus, the overhead line does not reach a safe height, Need to add a small with or blocking network. When the bypass is not set, the outlet can be passed from the top of the rear cabinet. The cabinet can also be installed voltage transformer or arrester, contact the bus and cable outlet installed in the cabinet. The back door is bolted, if the live display prompts no electricity, you can open the back door, the main busbar compartment and rear compartment separated by partitions.