- Product name:vacuum circuit breaker
- Model:ZN73 12~24
- Rated voltage:12KV/24KV
- Rated current:630A
- Rated frequency:50/60 Hz
- Mechanical Life:10000 Times
- Material:Copper
- Certificate:ISO9001
- Customized:Accept special order
- Type:High Voltage
- Poles Number:3
- Place of Origin:CN;ZHE
- Brand Name:YUFENG/OEM
- Model Number:ZN73 12~24
Overview
ZN73-12/24KV type indoor high voltage vacuum circuit breaker is the indoor switch device for three-phase AC 50Hz, rated voltage
12-24KA power system. It can be used for electrical equipment control, power plant, industrial and mining enterprises. It can be installed in the KYN28-12 type, and also cab be installed in the fixed cabinet or gas insulated cabinet.
OUR ADVANTAGE:
1. Lowest price and good quality products in the market;
2. One-year warranty and life-time after service;
3. All VCB parts can be customed.
| Item | Description | Unit | Data | ||||||
| 1 | Rated voltage | KV | 12 | ||||||
| 2 | Max. voltage | KV | 12 | ||||||
| 3 | Rated current | A | 630/1250 | 630A/1250A/ 1600A/2000A/ 2500A/3150A | 1250A/1600A/ 2000A/2500A/ 3150A/4000A | ||||
| 4 | Rated short circuit breaking current | KA | 20/25 | 31.5 | 40 | ||||
| 5 | Rated short circuit making current | KA | 50/63 | 80 | 100 | ||||
| 6 | Rated peak withstand current | KA | 50/63 | 80 | 100 | ||||
| 7 | 4S Rated withstand current | KA | 20/25 | 31.5 | 40 | ||||
| 8 | Rated insulation level | Power frequency withstand voltage(when losing a circuit) | KV | To earth 42 | |||||
| Impulse withstand voltage(when losing a circuit) | To earth 75 | ||||||||
| 9 | Rated operating sequence | OC-0.3s-CO-180S-CO | |||||||
| 10 | Mechanical life | Times | 20000 | ||||||
| 11 | Rated short circuit current breaking time | Times | 50 | ||||||
| 12 | Rated close brake voltage of operating machnie | V | AC,DC 110,220 | ||||||
| 13 | Rated break brake voltage of operating machnie | V | AC,DC 110,220 | ||||||
| 14 | Contact stroke | mm | 11±1 | ||||||
| 15 | Exceed range(the compress length of contact sping) | mm | 3.5±0.5 | ||||||
| 16 | Different period of three-phase break and close break | ms | ≤2 | ||||||
| 17 | The jump time of contact close break | ms | ≤2 | ||||||
| 18 | Average break speed | m/s | 0.9~1.2 | ||||||
| 19 | Average closing speed | m/s | 0.5~0.8 | ||||||
| 20 | Opening time | Ubder max.operating voltage | S | ≤0.05 | |||||
| Under min.operating voltage | ≤0.08 | ||||||||
| 21 | Closing time | s | 0.1 | ||||||
| 22 | Resistance of each phase main loop | μΩ | 630≤50 | 1250≤45 | |||||
| 23 | Contacts limit ersion | mm | 3 | ||||||
FAQ
Q: Are you trading company or manufacturer ?
A: We are factory with more than 20 years experience in this field.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days
if the goods are not in stock, it is according to quantity.
Q:Do your company have a website ?
A:Please check :www.cnyufeng.cn
Q: What is your terms of payment ?
A: Payment=500USD, 30% T/T in advance ,balance before shippment.
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