ZN63-12(VS1-12)indoor high voltage vacuum circuit breaker VCB for switchgear 12kV
This technical specification stipulate the requirement of ZN63-12(VS1-12)/T1250-31.5 model indoor AC HV vacuum circuit breaker in use condition, technical parameter,
design structure, test method, test rule, packing, transportation, and storage etc.
This technical specification is applicable for ZN63-12(VS1-12)/T1250-31.5 model indoor AC HV vacuum circuit breaker. This VCB can be used in indoor site
with three phases, 50Hz, rated voltage 12KV. It mainly serves in mineral enterprise,
power plant and substation for control and protection of electric equipment.
It can be installed both in trolley type switchgear and fixed type switchgear.
This VCB has merits of long life, easy maintenance, no pollution, no explosion, low noise etc,
and it is fit for use in stringent work condition with frequent operation etc.
VS1-12 indoor side-mounting AC and High-voltage VCB is a type of indoor switchgear applied to electric system of rated
voltage 7.2~12kV, three-phase 50/60Hz to protect and control apparatus.
It is especially appl icable in occasion with frequent operation; it can break short- circuit continuously. This HV VCB is of fixed mounting, mainly used in stationary
switch cabi net. It can work separately or in ring network power supply,
prefabricated substation as well as in non-standard power supply system.
Product Features:
1.Altitude: 1000m;
Ambient temperature: -25 ~+40 ;
Relative humidity: daily average 95 , monthly average 90 ;
Earthquake intensity: 8 degree;
Applicable occasions should free from inflammables, explosives, corrosives
Rated voltage(12kV)
Rated short-time P.F. withstand voltage(1min.)(42kV)
Rated lightning impulse withstand voltage(peak)(75kV)
Rated power frequency(50/60Hz)
10.Rated current(630,1250A)
Main technical data
| ITEM | UNIT | DATA |
| Rated voltage | kV | 12 |
| Rated current | A | 1250 |
| Rated frequency | Hz | 50 |
| Rated insulation level | Lightning impulse
withstand voltage | Phase to phase,
phase to earth | kV | 75 |
Insulating distance
of contact | 85 |
1min power
frequency
withstand voltage | Phase to phase,
phase to earth | 42 |
Insulating distance
of contact | 49 |
| 4s rated short time withstand current | kA | 31.5 |
| Rated short circuit break current | / | 31.5 |
| Rated peak value withstand current | / | 80 |
| Rated short circuit making current | / | 80 |
| Rated operation sequence | O-0.3s-CO-180s-CO |
| Break times of rated short circuit current | Times | 50 |
| Mechanical life | | 20000 |
| Break current of rated different phases earth fault | kA | 27.4 |
| Break current of rated single capacitor bank | A | 400 |
| Break current of rated back to back capacitor bank | | 400 |
| Rated open operation voltage/current | V/A | DC(AC)220/1.1 DC(AC)110/2.2 |
| Rated making operation voltage/current | DC(AC)220/1.1 DC(AC)110/2.2 |
| Release work current of rated transient over current | A | 5 |
| Rated circuit of secondary circuit | V | DC(AC)220 DC(AC)110 |
| Rated voltage of energy storage motor | DC(AC)220 DC(AC)110 |
| Rated output power of energy storage motor | W | 50 |
| Energy storage time | s | ≤10 |
1min power frequency withstand voltage
of secondary circuit | V | 2000 |
| Insulating distance of contact | mm | 11±1 |
| Overtravel of contact | 3+1 0 |
| Center distance between different poles | 210±1 |
| Allow abrasion thick of contact | 3 |
| Average opening speed | m/s | 1.2±0.2 |
| Average closing speed | 0.7±0.2 |
| Contact closing jump time | ms | ≤2 |
| Close/open synchronized of three phases | ≤2 |
| Main circuit resistance | μΩ | ≤55 |
| Opening time | ms | 25~60 |
| Closing time | 35~75 |
| Operation characteristic of operation mechanism | 65%~120% rated voltage | Reliable open/close |
| ≤30% rated voltage | Can not open |
About us
We are specialty on providing medium voltage and high voltage circuit breaker and switchgear
components, such as 12KV, 24 KV, 36KV and 40.5KV embedded cylinder,insulated
operating rod,auxiliary circuit socket,counter,circuit breaker board,vacuum circuit breaker
plastic panel,connection terminal,vacuum circuit breaker and so on.These components apply
on 630A, 1250A, 2500A, 3150A and 4000A VS1 (ZN85-40.5)
Our Advantages
1. Strict quality control and excellent after-sales service.
2. Experienced staffs answer all of your question in fluent English.
3. Customized design is available. OME&ODM are welcomed.
4. Exclusive and unique solution can be provided to our customer by our well-trained and professional engineers and staffs