ZN85-40.5KV Indoor Vacuum Circuit Breaker (VCB)

ZN85-40.5/T □ -□（ 3AV3)-series handcart type indoor vacuum circuit breaker for three-phase AC 50Hz/60Hz,40.5KV power system, it's comply with standard of IEC62271-100, it's for industrial and mining enterprises, power plants and substations as the division and load current, overload current fault current purposes, and occasions for frequent operation.

Email: steven@boerstn.com

Tel: 13868438199

Whatsapp: 8613868438199

ZN85-40.5KV Indoor Vacuum Circuit Breaker (VCB)

description1

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PRODUCT DETAILS

The use of environmental conditions

Altitude: ≤2000m;
Air temperature: -55℃ ~ +45℃;
Relative humidity: daily average is not more than 95%, saturated vapor pressure daily average is not more than 1.8kPa.
Earthquake intensity: not more than eight. Installation places: No fire, explosion hazard, serious filthy places.
In the second system, the amplitude of induced electromagnetic interference does not exceed 1.6kv
Power condition: DC 110V, 220V; AC 110V, 220V
If the client have other special request, please rise up when ordering.

Product model and meaning:

ZN85-40.5/T
Vacuum circuit breaker
Rated short-circuit breaking current(KA)
Indoor type
Rated current (A)
Series number
Actuator type
Rated voltage

General structure drawing and installation size:

Mainly technical parameters

No	Item	unit	parameter
1	Rated voltage	KV	40.5
2	1min power frequency withstand voltage(RMS)	KV	95
3	Lighting impulse withstand voltage(peak)	KV	185
4	Rated frequency	Hz	50/60
5	Rated current	A	1250, 1600, 2000，2500，3150
6	Rated short time withstand current	kA	25, 31.5，40
7	Rated peak withstand current	kA	63, 80，100
8	Rated breaking duration	s	4
9	Rated short-circuit breaking current	kA	25, 31.5，40
10	Rated short circuit making current(peak)	kA	63, 80，100
11	Rated breaking order		0-0.3s-CO-180s-CO
12	Breaking time	ms	≤80
13	Rated short-circuit cirrent breaking times	times	20
14	Rated single capacitor device ON-OFF current	A	630
15	Rated single back-to-back capacitor device current	A	400
16	Rated operating voltage	V	AC110/220, DC110/220
17	Mechanical life	times	10000
18	Contactor opening distance	mm	22±2
19	Contactor contact trip	mm	7.5±1.5
20	Average speed for closing	m/s	0.65±0.15
21	Average speed for opening	m/s	1.8±0.2
22	Closing time	ms	45 - 100
23	Opening time	ms	40-100
24	Contact closing bounce time	ms	≤3
25	At the different period of three consistency	ms	≤2
26	Buffered travel	mm	13±1
27	Leading electrical circuit resistance(excluding contactor arm)	μΩ	≤40
28	the thickness of the contact wear	mm	3

Installation

Installation and test run:

5.1Checking before installation

Check the specification of the breaker complies with the contract, and if the documents and the accessories provided with breaker are complete, if there is any injury on the surface of the breaker and if the isolated drum is damaged, also check the vacuity of the vacuum are-chute with industrial frequency voltage withstand method, switch tripping and apply industrial frequency voltage 95kv for 1 min at the fracture and there should be no flash-over or breaking.
5.2Test

Check the circuit breaker box in good condition generally does not require re-commissioning, only when that circuit breakers do not meet the technical requirements or replacement of critical components, the need to debug the circuit breaker to conform to the technical requirements.
First, adjust the vacuum interrupter moving conductive rod and rod ends under the oil buffer height, so that the vacuum interrupter contact opening distance of 20±2 mm, insulated rod with adjustable length, so that the contact travel of 7.5±1.5 mm; then check the connecting shaft and oil buffers are normal, finally, regulatory agencies to make normal operation, requiring either manual, electric control, energy storage, switching, and other sub-actions should not be a gate wiring.