15kV MV outdoor vacuum Auto Circuit recloser
Key attributes
| Brand | ROCKWILL |
| Model NO. | 15kV MV outdoor vacuum Auto Circuit recloser |
| Rated voltage | 15kV |
| Rated normal current | 630A |
| Rated short circuit breaking current | 16kA |
| Power frequency withstand voltage | 45kV/min |
| Rated lightning impulse voltage | 120kV |
| manual closing | No |
| Series | RCW |
Product descriptions from the supplier
Description：
The RCW series automatic circuit reclosers can use on overhead distribution lines as well as distribution substation applications for allvoltage classes 11kV up to 38kV at 50/60Hz power system. and it’s rated current can reach 1250A.The RCW series automatic circuit reclosers integrates the functions of control, protection, measurement, communication, fault detection, on-line monitoring of closing or opening.The RCW series vacuum recloser is mainly combined with integration terminal, current transformer, permanent magnetic actuator and it’s recloser controller.
Features：
Optional grades available in rated current range
With optional relay protection and logic for user selection
With optional communication protocols and I/O ports for users to choose
PC software for controller testing, setup, programming, updates
Parameters：
Rated maximum voltage |
15KV |
|
Rated maximum current |
400A |
|
Rated frequency |
50Hz |
|
Rated short circuit breaking current |
12.5KA |
|
Rated peak value withstand current |
31.5KA |
|
Rated 1min power frequencywithstand voltage（Three-phase Epoxy resin pole） |
45KV |
|
Rated lightning impulse voltage（Three-phase Epoxy resin pole） |
120KV |
|
Operation sequence |
C-0.5-CO-2-CO-5-CO（Magnetic actuator） |
|
Mechanical life |
n:30000（Magnetic actuator） |
|
Power supply and operating voltage |
110/220V( Customized) |
|
Ratio of current transformer |
400/1A( Customized) |
|
Number of voltage sensors（Three-phase Epoxy resin pole） |
≤6 |
|
Opening time |
≤30ms（Magnetic actuator） |
|
Closing time |
≤40ms（Magnetic actuator） |
|
Minimum creepage distance |
31，level4（mm/kv） |
|
Minimum distance between phases |
360mm |
|
Potential transformer |
110/220V( Customized) |
|
Cable length |
6,8,12m( Customized) |
|
Cable clamp（Three-phase Epoxy resin pole） |
4-hole NEMA |
|
Lightning arrester |
≤6 |
|
Mounting type |
Single / double column |
|
With optional relay protection& logics for user choice |
Instantaneous over-current protection |
|
Timing over-current protection |
||
Negative sequence over-current protection |
||
Directional over-current protection(*) |
||
Over-voltage protection./Under voltage protection |
||
Programable protection relay curves total 10 nos ANSI/IEC curves |
||
Cold load pickup protection TCC +Hot line tag |
||
Earth protection EF/SEF +Zone Sequence Co-ordination |
||
More relay functions can be customized |
||
With optional communication protocols & I/O port for user choice |
RS-232 and RS-485 ports supporting |
|
DNP3.0 communication protocol support(*) |
||
Modbus communication protocol is optional(*) |
||
IEC 60870-5-101 communication protocol support |
||
IEC 60870-5-104 communication protocol support.(*) |
||
The recloser can communicate through GPRS(Or GSM) modem with English or Specified language (*) |
||
With optional functions for use |
Rated currents, System phase current. |
|
Rated voltages, System phase voltage& secondary low voltage power supply voltage. Frequency, power(kWh), reactive power(kV arh), power factor |
||
With optional reclosing interval for user pre-program |
Reclosing times setting support |
|
Dead time setting support |
||
With events recording function |
SOE 10000 operations record |
|
Fault record and normal operation record |
||
Note: (*) mean should customized by manufacturer if needed |
||
Environmental requirement：
Maximum temperature: |
+40℃ |
Minimum temperature: |
-30℃ |
Monthly average humidity |
95% |
Humidity: |
90% |
Above sea level: |
2500m or higher |
Ambient air not apparently polluted by corrosive and flammable gas, vapor |
|
Product show：
1. Environmentally friendly gas mixed insulation technology
CO ₂ and perfluoroketone/nitrile mixture gases: such as CO ₂/C ₅ - PFK (perfluoroketone) or CO ₂/C ₄ - PFN (perfluoronitrile) mixture gases. These mixed gases combine the arc extinguishing ability of CO ₂ and the high dielectric strength of perfluorinated ketones/nitriles, making them a substitute for SF ₆ in high-voltage applications. For example, CO ₂/C ₄ - PFN mixed gas has been commercially applied in high-voltage circuit breakers, with insulation and breaking performance close to SF ₆, and significantly reduced global warming potential (GWP).
Air and perfluoroketone mixed gas: In medium pressure applications, the mixture of air and C ₅ - PFK can be used as an insulation medium. By optimizing the mixing ratio and pressure, insulation performance comparable to SF ₆ can be achieved while reducing environmental impact.
2. Vacuum circuit breaker technology
Vacuum arc extinguishing chamber: Utilizing the high insulation strength and fast arc extinguishing ability in a vacuum environment, it replaces the arc extinguishing function of SF ₆. Vacuum circuit breakers are widely used in the medium and low voltage fields, especially in scenarios with high environmental requirements. Its advantages are no greenhouse gas emissions and excellent arc extinguishing performance, but it needs to solve problems such as vacuum sealing and contact materials.
Combination of vacuum circuit breaker and gas insulation: In some medium voltage switchgear, vacuum circuit breakers are used as breaking elements, combined with dry air or nitrogen as insulation media, to form environmentally friendly gas insulated switchgear (GIS) that balances insulation and arc extinguishing performance.
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