Item | Unit | Parameter |
Rated Pressure (Ur) | kV | 12/17.5 |
Rated Frequency (Fr) | Hz | 50/60 |
Rated Current (Ir) | A | 630 |
Rated Insulation Level | Short-time Power-frequency Withstand Voltage (Ud) | kV | 42/48 |
Lightning Impulse Withstand Voltage (Up) | kV | 75/85 |
Rated Short-time Withstand Current (Ik) | kA | 20/25 |
Rated Short-circuit Duration(tk) | S | 4 |
Rated Peak Withstand Current(Ip) | kA | 50/63 |
Rated Short-circuit Breaking Current (Isc) | kA | 20/25 |
Rated Short-circuit Making Current (Ima) | Vacuum interrupter | kA | 50/63 |
Earthing switch |
Auxiliary Circuit and Control Circuit | Rated Pressure (Ua) DC/AC | V | ≤400 |
Power-frequency Withstand Voltage (1min) | V | 2000 |
Mechanical Endurance | Circuit breaker | cycle | 10000 |
Disconnecting switch | cycle | 3000 |
Earthing switch | cycle | 3000 |
Electrical Endurance | Circuit breaker | rating | E2 |
Earthing switch | rating | E2 |
Degree of Protection by Enclosure | | IP4X |
Degree of Protection by Fully Sealed Tank | | IP65 |
Normal Service Conditions
Maximum temperature | 40℃ (average temperature ≤35℃ within 24h) |
Minimum temperature | -25℃ |
Altitude | ≤2000m |
Daily average relative humidity | ≤95% |
Monthly average relative humidity | ≤90% |
Special Service Conditions
Provided the equipment should be run in special and harsh environment, please consult our experts.
- Vacuum Circuit Breaker
- Disconnecting Switch / Earthing Switch
- Inspection Window of Disconnection/Earthing Status
- Protection Terminal
- Cable Compartment
Fundamental Units
Smart Ring series with following medium-voltage module function:
- D (cable connection unit)
- B (circuit breaker unit)
- BB (circuit-breaker shared enclosure unit)
- BBB (circuit-breaker shared enclosure unit)
- M (medium-voltage metering unit)
- PTX (PT unit)
- BS (busbar sectionliser unit)
- PT (PT unit)
- PT (PT unit)
- PTB (PT unit)
Note: "←" and "→" in the diagram are expandable kits.
Flexible combination can be customized as request. Please consult the manufacturer if you have any question.
SRL-610 Series Microcomputer Integrated Protection Device
- Multiple protection methods of three-section over-current protection, earthing protection, non-power protection and over-load protection, enhancing anti-interference capability and reduce power consumption;
- Multiple intelligent switch input circuit supporting free user presetting;
- Microcomputer protection devices of other brands can be equipped as request.
IPS/IPC series Single-phase Earth Fault Detector
- High sensitivity underpinned by phase asymmetry algorithm, leading to the minimum detectable fault current to be 0.5A;
- Effectively detecting high impedance earth fault with up to 12,000Ω earth resistance;
- Simple and easy installation which only needs to sample three-phase current without using zero-sequence CT, PT and other equipment;
- Suitable for systems with small resistance earthing, isolated neutral point or Petersen coil grounding.
Condensing/heating Dehumidification Device
Reducing water vapor in the working environment to ensure effective and safe machine operation
Wireless Temperature Sensor
Real-time testing of cable top’s temperature and making alarms for faults in advance
Partial Discharge Testing Device
Tracking partial discharge and display the testing outcome simultaneously
Applicable Standards
- IEC 62271-200 Part 200 High-voltage Switchgear and Controlgear: 1kV~52kV AC Metal Fully-sealed Switchgear and Controlgear
- IEC 62271-100 Part 100 High-voltage Switchgear and Controlgear: High-voltage AC Circuit-breaker
- IEC 62271-1 Part 1 High-voltage Switchgear and Controlgear: General Specifications