ZN85B-40.5/T1600/2000/31.5 Indoor Vacuum Circuit Breaker

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With the rated voltage of 40.5KV and the rated frequency of 50Hz, the ZN85B-40.5/T1600/2000/31.5 indoor vacuum circuit breaker serves as control and protection equipment in the substations, power plants, as well as industrial and mining enterprises.

With superior performance, this high-voltage switching device can be used for breaking short-circuit current repeatedly and it can be frequently operated within the rated current range. Hence, this indoor vacuum circuit breaker is particularly suitable to break important loads and for occasions requiring frequent operations.

Features
1. Our indoor vacuum circuit breaker adopts the composite insulation of air and organic materials.

2. Installed inside an insulation cylinder, the vacuum interrupter is free from the external influence and mechanical damage.

3. The indoor vacuum circuit breaker adopts overall layout and modular design, which is simple and compact in structure. The operating mechanism is designed into 4 independently arranged functional units, i.e., closing functional unit, opening functional unit, transmission functional unit, and auxiliary functional unit.

4. A special transmission mechanism is used to drive the vacuum interrupter, making the dynamic response characteristic of the operating mechanism more matching with that of the interrupter breaking. This can reduce the closing power, increase closing speed, reduce contact burning, and improve breaking performance.

5. Our indoor vacuum circuit breaker boasts smooth operation, high reliability, as well as small vibration and noise.

Use Environment
1. Altitude: ≤ 1,000m
2. Ambient Temperature: -15℃~ 40℃
3. Relative Humidity: Daily average ≤ 95%, monthly average ≤ 90%
4. Water Vapor Pressure: Daily average ≤ 2.2kPa, monthly average ≤ 1.8kPa
5. Earthquake Intensity: < 8 degree
6. The ambient air should not be seriously polluted by dust, smoke, corrosive or flammable gas, vapor, or salt spray.

ZN85B-40.5/T1600/2000/31.5 Indoor Vacuum Circuit Breaker

Technical Parameters

Item			Unit	Value
Rated Voltage			KV	40.5
Rated Current			A	1600 2000
Rated Insulation Level				Power Frequency	Impulse
		Break	KV	95	185
		Phase to phase	KV	95	185
		Phase to ground	KV	95	185
		Auxiliary loop	KV	2
Rated Frequency			Hz	50
Rated Short-circuit Breaking Current			KA	31.5
Rated Peak Withstand Current			KA	80
Rated Short-time Withstand Current			KA	31.5
Rated Short-circuit Closing Current			KA	80
Rated Short Circuit Duration			s	4
Rated Short-circuit Current Breaking Times			times	20
Rated Cable Charging Breaking Times			A	50
Rated Operating Sequence			O-0.3s-CO-180s-CO
Mechanical Life			times	10,000
Closing Time			ms	45-75 (58±8)
Opening Time			ms	35-75 (43±5)
Rated Power of the Energy Storage Motor			W	200
Energy Storage Time			s	≤10
Rated Operating Voltage	Closing loop		V	DC 220/110
	Opening loop		V	DC 220/110
	energy storage motor		V	DC/AC 220
Secondary Loop Current	Closing loop		A	0.89/1.91
	Opening loop		A	0.89/1.91
	Auxiliary switch		A	AC 10DC 5

Note: 1. The closing time and opening time are calculated at the highest and lowest voltages respectively. The value inside the bracket is the one under the rated voltage.
2. Please refer to the qualified certificate for the actual technical parameters.

As an experienced vacuum circuit breaker manufacturer and supplier in China, BBE also offers low voltage distribution switchgear, high voltage vacuum contactor, vacuum circuit breaker for generator, withdrawable switchgear, and much more.

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