GPVN-40.5kV Indoor AC High Voltage Vacuum Circuit Breaker

Short Description:

GPVN-40.5kV indoor vacuum circuit breaker is a product designed and produced by our company and Xi’an High-voltage Electric Apparatus Institute. The VCB is of rated voltage 40.5kV, three-phase and AC 50/60Hz. It applies to mining firms, power house and substation acting as protection and control electric apparatus. It is also applicable in occasions with frequent operation.

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Product Detail

Product Tags

Ambient Condition

Altitude: 1000m(Standard); can up to 4500m for special ordering;
Ambient temperature: -25℃ ~+45℃;
Relative humidity: daily average ≤95%, monthly average ≤90%;
Earthquake intensity: ≤8 degree;
Applicable occasions should free from inflammables, explosives, corrosives and severe vibration.

Model

Structure Feature

1. The arc-extinguish chamber is on the upper part and the mechanism is on the lower part. This structure is convenient for debug.
2. Complex insulating structure using air and organic material; Compact dimension and small weight.
3. Vacuum arc-extinguish chamber of Cutler-Hammer Company (USA) and domestic ZMD are both applicable for the VCB. Both two kinds of chambers extinguish arc by vertical magnetic field and featuring with low cut-off and good on-off capability with asymmetry.
4. Simple spring operation mechanism is free from maintenance within 10000 times of operations.
5. Lead-screw propeller, easy and stable operation and good self-locking capability.

Technical Specification

No.	Item	Unit	Data
1	Rated voltage	kV	36/38/40.5
2	1min. Power frequency withstand voltage	kV	95 (118, isolating distance)
3	Lightning impulse withstand voltage(peak)	kV	185 (215 isolating distance)
4	Rated current	A	630,1250,1600,2000, 2500
5	Rated short-circuit breaking current	kA	20, 25, 31.5
6	Rated short-circuit making current(peak)	kA	50, 63, 80
7	4s rated short-time withstand current	kA	20, 25, 31.5
8	Rated peak withstand current	kA	50, 63, 80
9	Rated operation sequence		O-0.3s-CO -180s-CO
10	Breaking times of rated short circuit breaking current	Times	30
11	Mechanical life	Times	10000; 20000 (for magnet type)
12	Rated frequency	Hz	50/60
13	Rated breaking current of capacitor bank	A	400