Audited Supplier
zw7-40.5
High Voltage Circuit Breakers
Energy-storage Type
Normal Type Circuit Breaker
Vacuum
Open Frame
ACB
3
Circuit Breaker
Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
ISO9001-2000
33kv~35kv
630A~2000A
50Hz-60Hz
700kg
20 25 31.5
Wooden Box
3100*2700*1400mm
Yueqing City, Zhejiang Province, China
Product Description
Company Profile
Zhejiang Maiyu Electric Co. , Ltd. is a professional manufacturer, high voltage vacuum circuit breaker
series, indoor high voltage vacuum circuit breaker series, load switch series, lightning arrester series, high
voltage disconnector series, drop fuse series, grounding switch series, cable box series and other
electrical equipment companies, the company is composed of a group of people engaged in electrical
industry for many years, with professional technical research and development and product sales team,
perfect production equipment, integrity management, strict quality control.
Product Description
ZW7-40.5 type outdoor high voltage vacuum circuit breaker is the three-phase AC 50Hz outdoor high voltage electrical equipment, suit for control and protection of 20-40.5kV transmission and distribution system; can also be used for sectional circuit breaker and switching capacitor bank occasions; this product can be matched with piecewise controller, reclose device can realize the power system intelligent segmentation, reclose control. And can add the current transformer for measurement and protection. Circuit breaker equipped with spring or electromagnetic actuator, reliable mechanical performance, frequent operation; no fire and explosion danger; circuit breaker conforms to the national standard GB19841989 "AC high voltage circuit breaker" and the International Electrotechnical Commission Standard IEC56, IEC62271-100 "high voltage AC circuit breaker" requirements.
Product Parameters
| serial number | project | unit | parameter | ||
| 1 | Rated voltage | KV | 40.5 | ||
| 2 | Rated insulation level | 1min power frequency withstand voltage | Dry test | KV | 95 |
| Wet test | KV | 80 | |||
| Lightning impulse withstand voltage (peak) | KV | 185 | |||
| 3 | Current rating | A | 1250,1600,2000 | ||
| 4 | Rated short-circuit interrupting current | KA | 20,25,31.5 | ||
| 5 | Rated sequence of operations | min-0.3s-combine-180s-combine | |||
| 6 | Rated number of short-circuit current interruptions | times | 12 | ||
| 7 | Rated short-circuit closing current (peak) | KA | 50,63,80 | ||
| 8 | Rated peak withstand current | KA | |||
| 9 | Rated short-time withstand current | KA | 20,25,31.5 | ||
| 10 | Rated short-circuit duration | S | 4 | ||
| 11 | Contact opening distance | mm | 22±2 | ||
| 12 | Contact overtravel | mm | 4±1 | ||
| 13 | Average opening speed | m/s | 1.5±0.2 | ||
| 14 | Average closing speed | m/s | 0.7±0.2 | ||
| 15 | Contact closing bounce time | mS | ≤2 | ||
| 16 | Three-phase (split) gate synchronous time difference | mS | ≤2 | ||
| 17 | Closing time | ms | ≤150 | ||
| 1Q | Opening time | mS | ≤60 | ||
| 19 | Mechanical life | times | 10000 | ||
| 20 | Rated operating voltage, auxiliary circuit rated voltage | V | DC110/220,AC110/220 | ||
| 21 | Current resistance per phase loop (without transformer) | μΩ | ≤100 | ||
| 22 | weight | kg | 700 | ||
Installation Instructions
