3.6, 7.2, 12kV fixed metal enclosed switchgear

The fixed metal enclosed switchgear (referred to as switchgear). Used for 3.6, 7.2, 12kV three-phase AC 50Hz series as the acceptance and distribution of electrical energy, especially suitable for frequent operation occasions, the bus system is a single bus (and can be derived from a single bus bypass and double bus structure).

General:

The switchgear conforms to the requirements of the national standard GB 3906-2006 "3.6kV-40.5kV AC metal enclosed switchgear and control equipment" and the international standard IEC62271-200, and has two proposed "five-guard" closing pin function. The main switch of this switch adopts ZN28A-12 series or ZN12-12 series vacuum circuit breaker equipped with CD17A electromagnetic operating mechanism and CT19B spring operating mechanism. The isolating switch adopts GN30-12 rotary isolating switch and CN22-10 high current isolating switch series product

Service Environment

Ambient temperature: upper limit +40℃, lower limit -25℃;
Altitude: The altitude does not exceed 1000m;
Relative temperature: the daily average is not more than 95%; The monthly average is not more than 90%;
Earthquake intensity: not more than 8 degrees.
Surrounding environment: no fire, explosion danger and pollution level does not exceed 3, chemical corrosion and violent vibration places

Key Feature

The bus bars are arranged in a standard shape and supported by 7350N bending strength porcelain insulators
Switch cabinet for double-sided maintenance, the front overhaul of the relay secondary components, maintenance of operating mechanism, mechanical interlocking and transmission parts, overhaul of circuit breakers
Rear maintenance main busbar and cable terminal, lighting in breaker room and cable room

Technical Data

Name	Unit	Data
Rated voltage	kV	3.6、7.2、12
Rated current	A	630、1250、1600、2000、3150
Rated short-circuit breaking current	kA	16、20、31.5、40
Rated short-circuit closed current（peak）	kA	40、50、80、100
Rated short-circuit dynamic stable current (peak)	kA	40、50、80、100
Rated heat stable current	kA	16、20、31.5、40
Rated heat stable duration	S	4
Class of protection		IP2X
Structural form		Single bus break and single bus with bypass
Mode of operation		Electromagnetic, spring energy storage
dimension	mm	1100×1200×2650（general form）
Weight	kg	800