China Wholesale Vacuum Load Switch – ZN85-40.5 Indoor High Voltage Vacuum Circuit Breaker – Timetric

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China Wholesale Vacuum Load Switch – ZN85-40.5 Indoor High Voltage Vacuum Circuit Breaker – Timetric Detail:

ZN85-40.5 Indoor High Voltage Vacuum Circuit Breaker

Summary

ZN85-40.5(3AV3) indoor high voltage vacuum circuit breaker 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.

Ambient condition

1. Altitude: ≤1000m;2. Ambient temperature: -25℃~+40℃;3. Relative humidity: daily average ≤95％, monthly average ≤90％;4. Earthquake intensity: ≤8 degree;5. Applicable occasions should free from inflammables, explosives, corrosivesand severe vibration.

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; Compactable dimension and small weight.3. Vacuum arc-extinguish chamber of Cutler-Hammer Company (USA) and domestic ZMD are both applicable for the VCB. Both twokinds 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.

ZN85-40.5 Indoor High Voltage Vacuum Circuit Breaker

Technical specification

No.	Ltem		Unit	Data
1	Rated voltage		KV	40.5
2	Rated current		A	1250		1600	2000、2500
3	Rated short circuit breaking current		KA	25	31.5	25	31.5
4	Rated dynamic stability current (peak)		KA	63	80	63	80
5	4S thermal stability current		KA	25	31.5	25	31.5
6	Rated short circuit dosing current (peak)		KA	63	80	63	80
7	Rated short circuit current breaking time		Times	20
8	Rated operating sequence			0-O.3s-C0-I80s-C0
9	Rated insulation voltage level	1 min power frequency withstand voltage	KV	95
		Lightning impulse withstand voltage(peak)		185
10	Mechanical life		Times	10000
11	Rated single capacitor bank opening and closing current		A	630
12	Rated back-to-back capacitor bank current		A	400
13	Rated voltage of energy storage motor		V	AC、DC：110; 220
14	Rated power of energy storage motor		W	≤230
15	Energy storage time of energy storage motor		s	≤15
16	Rated voltage of opening and closing coil		V	DC：110;220
17	Rated current of opening and closing coil		A	1.05(110V) 0.96(220V)
18	Contact stroke		mm	20±2
19	Contact contact stroke		mm	7.5 ±1.5
20	Three-phase opening,dosing phase asynchronous		ms	≤2
21	Contact closing bounce time		ms	≤3
22	The main circuit resistance (not include the contact arm)		M Q	≤40

parameter2 ZN85-40.5 Indoor High Voltage Vacuum Circuit Breaker

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Being supported by an highly developed and skilled IT group, we could offer you technical support on pre-sales & after-sales support for China Wholesale Vacuum Load Switch – ZN85-40.5 Indoor High Voltage Vacuum Circuit Breaker – Timetric , The product will supply to all over the world, such as: Barbados, Kyrgyzstan, Oman, With the technology as the core, develop and produce high-quality merchandise according to the diverse needs of the market. With this concept,the company will continue to develop merchandise with high added values and continuously improve items,and will present many customers with the best goods and services!

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