The use of environmental conditions
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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:
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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 |
KV |
95 |
3 |
Lighting impulse withstand |
KV |
185 |
4 |
Rated frequency |
Hz |
50/60 |
5 |
Rated current |
A |
1250, 1600, 2000,2500,3150 |
6 |
Rated short time withstand |
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 |
kA |
25, 31.5,40 |
10 |
Rated short circuit making |
kA |
63, 80,100 |
11 |
Rated breaking order |
|
0-0.3s-CO-180s-CO |
12 |
Breaking time |
ms |
≤80 |
13 |
Rated short-circuit cirrent |
times |
20 |
14 |
Rated single capacitor device |
A |
630 |
15 |
Rated single back-to-back |
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 |
ms |
≤2 |
26 |
Buffered travel |
mm |
13±1 |
27 |
Leading electrical circuit |
μΩ |
≤40 |
28 |
the thickness of the contact wear |
mm |
3 |
Installation and test run:
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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.