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Do Better Performances in Demanding Duties
Yueqing Aiso gain client trust thanks to their proven reputation for reliability, performance and long life. Electrical equipment from Yueqing Aiso are available for original equipment manufacturers (OEM) to incorporate in their own installations or for use in repair, retrofit and upgrade projects.
Why Yueqing AIso?
1,Full engineering and technical support: 3 professional manufacturers, and technical service team.
2,Quality is No1 ,our culture.
3,Quickly lead times:”Time is gold” for you and for us
4,30min fast response:we have professional team,7*20H
Product Structure
ZW7A-40.5 Series outdoor high voltage vacuum circuit breakers main switchgear of AC50Hz, 40.5KV, which is assembled with spring operating or electromagnetic operating mechanism. It can be operated to switch on/off by remote control, and it is also charged and switched on/off by hand. The design function of breaker complies with the requirements of GB1984-89 and IEC56 “AC high voltage circuit breaker”, it is mainly used in outdoor 35KV distribution system to control and protect, also for normal operating and protecting short circuit of urban,rural network, or industrial enterprises. Its overall structure is supported by porcelain insulator, vacuum interrupter built in upper insulator, downside insulator used for supporting. The breaker applies
frequent operating places with the advantages of good sealing anti-aging, high-voltage withstand, non flame, non explosion long working life, easy installation and maintenance and etc.
Product feature
For frequent operation place
Good sealing, anti-aging, high pressure, no burning, no explosion, long life, convenient installation and maintenance features
Vacuum circuit breaker ambient condition
1, Altitude:not exceed 1000m
2, Ambient temperature:not higher than +40°C,not less than – 15°C
3,Relative humidity:daily average relative humidity:≤95%;monthly average relative humidity :≤95%;monthly avergae relative humidity ≤90%, daily avergae saturated vapor pressure ≤2.2KPa;monthly average value: ≤1.8KPa.
4, Earthquake intensity: ≤8 degree
5, The installation should be free from fire,explosion,severe vibration,chemical corrosion and serious pollution.
Technical parameters
| Item | Description | Data | ||
| 1 | Rated voltage(KV) | 33/35 | ||
| 2 | Rated insulation level(KV) | 1min withstand voltage | Dry | 95 |
| Wet | 80 | |||
| Lightning impulse withstand voltage(peak) | 185 | |||
| 3 | Rated current(A) | 630 | ||
| 4 | Rated short circuit breaking current(KA) | 20/25/31.5/40 | ||
| 5 | Rated operating sequence | OC-0.3s-CO-180S-CO | ||
| 6 | Rated short-circuit opening times | 20 | ||
| 7 | Rated short circuit closing current(peak)(KA) | 50/63/80 | ||
| 8 | Rated peak withstand current(KA) | |||
| 9 | Rated short-circuit withstand current(KA) | 20/25/31.5 | ||
| 10 | Rated duration of short-circuit(S) | 4 | ||
| 11 | Aveage breake speed(m/s) | 1.5±0.2 | ||
| 12 | Average closing speed(m/s) | 0.7±0.2 | ||
| 13 | The jump time of contact close breake(ms) | ≤2 | ||
| 14 | Time difference of closing(breaking) three phase at the same time(ms) | ≤2 | ||
| 15 | Closing time(ms) | ≤150 | ||
| 16 | Opening time(ms) | ≤60 | ||
| 17 | Mechanical life | 10000 | ||
| 18 | Rated operating voltage and aux circuit rated voltage(V) | DC110/220 | ||
| AC110/220 | ||||
| 19 | DC resistance of circuit for every phase(S) | ≤100 | ||
| 20 | Contacts limit erosion(A) | 3 | ||
| 21 | Weight(KG) | 1100 | ||
Outline dimension
