| Brand | ROCKWILL |
| Model NO. | 12kV 13.2kV 13.8kV 14.5kV 15kV MV outdoor Three phase Smart recloser/reclosure Source Manufacturer |
| Rated voltage | 15kV |
| Rated normal current | 1250A |
| Rated short circuit breaking current | 25kA |
| Power frequency withstand voltage | 28kV/min |
| Rated lightning impulse voltage | 95kV |
| manual closing | Yes |
| Mechanical lock | No |
| Series | RCW |
Description：
Pioneer of China’s recloser track and the first specialized source manufacturer — that’s who we are after decades of focused efforts. We’ve strengthened our foundation via tech breakthroughs, guided the industry through standard-setting, and built a fully independent full-chain system from core R&D to mass production and delivery.
The RCW series automatic circuit reclosers can use on overheaddistribution lines as well as distribution substation applications for all voltage 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’srecloser 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
The voltage classes of some of these Automatic Reclosers include 6kV, 6.3kV, 6.6kV, 6.9kV, 7.2kV, 10kV, 10.5kV, 11kV, 11.5kV, 12kV, 13.2kV, 13.8kV, 14.5kV, 14.4kV, 15kV, 15.5kV, 15.6kV, 17.5kV, 20kV, 21.9kV, 22kV, 24kV, 30kV, 33kV, 33.5kV, 34.5kV, 35kV, 36kV, 38kV, 38.5kV, 40.5kV, 44kV, 45kV, 46kV, 66kV and 69kV. Rated Short-Circuit Breaking Current includes 8kA, 12.5kA, 16kA, 20kA, 25kA, 31.5kA and customization is available.
Item |
Specification |
Rated maximum voltage |
15kV |
Rated maximum current |
1250A |
Rated frequency |
50Hz |
Rated short circuit breaking current |
16kA |
Rated peak value withstand current |
40kA |
Rated 1min power frequency withstand voltage (Three-phase Epoxy resin pole) |
28kV |
Rated lightning impulse voltage (Three-phase Epoxy resin pole) |
95kV |
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) |
≤3 |
Opening time |
≤30ms (Magnetic actuator) |
Closing time |
≤40ms (Magnetic actuator) |
Minimum creepage distance |
31, level 4 (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) |
2-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(⁽¹⁾) Over-voltage protection / Under voltage protection Programmable protection relay curves (total 10 nos ANSI/IEC curves) Cold load pickup protection TCC + Hot line tag Earth protection E/F 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 60870-501 communication protocol support IEC 60870-5-104 communication protocol support The recloser can communicate through GPRS(or) GSM(or) GPRS/GSM module with English or Specified language |
With optional functions for use |
Rated currents, System phase current, Rated voltages, System phase voltage and secondary low voltage power supply voltage Frequency power (kWh), reactive power (kVarh), 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°C |
Minimum temperature: |
-30°C |
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：
What is the vacuum arc extinguishing fault of outdoor vacuum recloser and its solution?
Decreased Vacuum Level: This is a common issue with vacuum arc quenching chambers. The vacuum arc quenching chamber relies on a high-vacuum environment to extinguish arcs. If the vacuum level decreases, its insulation performance and arc-quenching ability will significantly deteriorate. The causes of decreased vacuum levels can include poor sealing, such as aging or damaged sealing materials, or tiny leaks present during the manufacturing process. When the vacuum level drops to a certain extent, incomplete arc extinction may occur during current interruption, leading to arc reignition and subsequent line faults.
Contact Wear: During frequent opening and closing operations, the contacts of the vacuum arc quenching chamber can wear down due to arc erosion. Contact wear increases contact resistance, which can lead to severe heating of the contacts when normal current passes through, affecting the normal operation of the equipment. Additionally, during fault current interruption, the contacts may not withstand the high current, resulting in contact welding or failure to interrupt the current.
Detect Vacuum Level: Use specialized vacuum level detection instruments, such as vacuum level testers, to regularly check the vacuum level of the vacuum arc quenching chamber. Once the vacuum level is found to be below the specified value, the vacuum arc quenching chamber should be replaced promptly.
Replace Seals: If you suspect that poor sealing is causing the decrease in vacuum level, inspect and replace the seals. When replacing seals, ensure that you use high-quality, compatible sealing materials and follow the correct installation procedures to prevent further leakage.
Regular Inspection: Regularly inspect the wear condition of the contacts through observation windows or by disassembling the device. Based on the degree of wear, if the wear exceeds the specified limit, the contacts should be replaced promptly.
Optimize Operating Parameters: Analyze the causes of contact wear, such as whether it is due to frequent operations or excessive operating current. If the issue is frequent operation, consider optimizing the recloser's reclosing strategy to reduce unnecessary opening and closing operations. If the issue is excessive operating current, check the line load conditions, adjust the protection settings, and avoid subjecting the contacts to excessive current impacts.
Yes. The RCWP, a cost-optimized option in the RCW+ series, features dual sensors, flagship controller, and 30,000 operations with permanent magnet three-phase linkage, while offering downgrade options (lock box removal, lockout removal, sensor/controller downgrade) so customers pay only for what they need.
Yes. Rockwill stands behind the RCW series with one of the most comprehensive warranties in the recloser industry: a full 10-year warranty covering the complete recloser, including the vacuum interrupter, permanent magnet operating mechanism, and control electronics. Any failure resulting from material or manufacturing defects during the warranty period is eligible for free replacement. Our warranty terms are straightforward and transparent, with no hidden conditions or complex exclusions, giving you complete peace of mind.
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