ZN85-40.5 Indoor Vacuum Circuit Breaker
- Altitude:≤1000m
- Ambient air temperature:-25℃~ +40℃
- Relative humidity: Monthly average≤90%; Daily average≤95%
- Earthquake intensity: 8 degree
- Applicable occasions should free from inflammables, explosives, corrosives and severe vibration
- The arc-extinguish chamber is on the upper part and the mechanism is on the down part. This structure is convenient for debug.
- Complex insulating structure using air and organic material; Compact dimension and Small weight.
- 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.
- Simple spring operation mechanism is free from maintenance within 10000 times of operations.
- Lead-screw propeller, easy and stable operation and good self-locking capability.
Technical parameter
| Item | Unit | Data |
| Rated voltage | kV | 40.5 |
Power frequency withstand voltage (1min) | kV | 95 |
Lightning impulse withstand voltage (peak) | kV | 185 |
Rated current | A | 630/1250/1600/2000 |
Rated power frequency | Hz | 50/60 |
Rated short circuit breaking current | kA | 20/25/31.5 |
Rated operating sequence | O-0.3s-CO-180s-CO | |
Breaking number for rated short circuit current | Times | 20 |
Rated short circuit making current (peak) | kA | 50/63/80 |
Rated withstand current (peak) | kA | 50/63/80 |
Rated short-duration withstand current (4s) | kA | 20/25/31.5 |
Mechanical life | Times | 10000 |
Rated breaking current of capacitor bank | A | 400 |
Technical parameter of storage motor of operating mechanism
No. | Rated voltage | Rated output power | Normal operate voltage | |
HDZ-22301B | DC110V AC110V | DC220V AC220V | 230W | 85%-110% rated voltage |
ZN85-40.5 Indoor Vacuum Circuit Breaker
ZN85-40.5(3AV3) indoor vacuum circuit breaker is a product designed and produced by our company and Xi' An High-voltage Electric Apparatus Institute. The VCB is rated voltage 40.5kV, three phase and AC 50Hz/60Hz. It applies to mining firms, power plant and substation, acting as protection and control electric apparatus. It is also applicable in occasions with frequent operation.
SINOAMIGO POWER T&D include below:
VCB & Operation Mechanism: Zhejiang Juli Electric Co.,Ltd
Zhejiang Juli Electric Co.,Ltd. Focus on VCB Operating Mechanism, Vacuum Circuit Breaker, Recloser Controller for VCB, include R&D, manufacturing, marketing and after service, honored as a member of High-Technology corp in China, now employees more than 300 and technician team more than 35%. Started since 2000, with headquarter in Liushi Town, Wenzhou City,China, where were named as the China electricity capital centre; Company pay a lot capacity and time for R&D, cooperate with many famous University intelligence and famous brand enterprises.
Sino Amigo, your China friends; Wherever you go, SINOAMIGO
