ZW8-12 (G) Vacuum Circuit Breaker, Outdoor Type,
1.General
1.1Ratings: Rated voltage up to 12kV, Rated current up to 1000A, AC50HZ
1.2 Application: for the control and protection of substation and equipments; making and breaking short-circuit current under various operating status of electric network.
1.3 Standard: IEC62271-100
2. Type and Interpretation:
Z W 8 - 12 /T630--
Z: Vacuum circuit breaker
W: Outdoor
8: Design code
12: Rated voltage(kV)
630: Rated current(A)
3. Working Condition
3.1 Ambient air temperature: -40ºC~ +40ºC
3.2 Altitude: ≤2000m
3.3 Pollution level:II
3.4 Wind speed: 34m/s (Equal to 700 over cylindrical surface)
3.5 The external shocking and earthquake could be neglected.
3.6 Service condition with dust, corrosive gas, water vapor or salty fog pollution are acceptable.
3.7The amplitude of electromagnetic interference in the secondary system
Note: Customized products for other special working conditions are available on your requirements.
4. Main Technical Parameter
| Item | Unit | Data |
| Rated voltage | kV | 12 |
| Rated insulation level | 1min power frequency with stand voltage | Dry test | kV | 50 |
| Wet test | kV | 42 |
| Rated lightning impulse withstand voltage | kV | 75 |
| Rated frequency | Hz | 50 |
| Rated current | A | 630(1250) |
| Rated short-circuit breaking current | kA | 12.5 | 16 | 20 |
| Rated short-circuit making current(peak) | 31.5 | 40 | 50 |
| Rated short-time withstand current | kA | 12.5 | 16 | 20 |
| Rated peak withstand current | 31.5 | 40 | 50 |
| Rated duration of short-circuit | s | 4 | 4 | 4 |
| Rated operation sequence | | O-0.3s-CO-180S-CO* |
| Mechanical life(grade M2) | times | 10000 |
| Electrical life | | E2 class |
| Overall breaking time | s | |
| Rated breaking times of short-circuit breaking current | times | 30 |
| Rated operating voltage and rated auxiliary circuit voltage | V | DC220,110,24
AC220,110,24 |
| Permissible wearing thickness for contacts | mm | 3 |
4.2 Technical parameters of intelligent terminal controller
4.2.1 Power
Rated working voltage: AC220V
Normal voltage tolerance: -20%~+20%
Backup power: 7Ah lead acid battery*2
Power consumption:
Rated frequency: 50Hz
Waveform distortion:
4.2.2 Rated value
Current transformer:5A, power consumption
Voltage transformer:220V, power consumption
Frequency: 50Hz
4.2.3 Measuring range and accuracy
Current : (10%~2000%)xIn %
Voltage: (10%~150%)xUn %
Frequency: 45Hz~65 %
4.2.4 Protection performance parameters
Event resolution:2ms
Time of quick breaking lockout
Time error of protection lockout: %
4.2.5 Lockout relay
Contact load:16A/250VAC,16A/30VDC
Electrical life: 100,000times
4.2.6 Input of switch number
Rated voltage:DC24V
Resolution:2ms
4.2.7 EMC characteristics
Insulation resistance:
Insulation strength: 2.5Kv,1min
Voltage sags and voltage interruption:100%,0.5s
High-frequency interference: Series-mode:1.5kVP,1min
Common-mode: 2.5Kvp,1min
Transient: 4.0Kvp,1min
Surge interference: 4.0Kvp, 1.2/50us
Contact discharge:8Kv
Frequency magnetic field: 100A/m
Magnetic damping shock: 100A/m
Impulse voltage: 5kV, 1.2/50us
4.2.8 Communication interface
Main Communication interface: RS481(9600bps)
4.2.9 Working Condition
Working temperature: -40ºC~ +70ºC
Storage temperature: -40ºC~ +85ºC
Humidity: 5%~100%
Ambient temperature change rate: ºC/h
Atmospheric pressure: 70~106Kpa
No obvious dust, smoke, corrosive and flammable gas, stream or salt mist.
4.2.10 Other technical parameters
Total weight: kgs
Protection class of shell: IP54
MTBF: 50,000h
4.3 Configuration of current transformer: 2~6 bushing current transformers,variable ratio50/5~1000/5(contact us if you have other requirements)
4.4 Configuration of voltage transformer: 1~2 external voltage transformer,1 cut-out fuse.
5. Overall and Installation Dimension
6.Ordering Information
Please indicate the following items when order:
6.1 Type, name and parameters and quantity
6.2 Disconnector is needed or not.
6.3 Rated operation voltage
6.4 Variable ratio , accuracy, quantity and output capacity of the current transformer.
6.5 Name and quantity of spare parts.
Note: Customized products are available per your requirements.
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