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21.9kV 22kV 24kV 25.8kV MV Single phase outdoor vacuum Auto Circuit recloser Source Manufacturer

  • 21.9kV 22kV 24kV 25.8kV MV Single phase outdoor vacuum Auto Circuit recloser Source Manufacturer

Key attributes

Brand ROCKWILL
Model NO. 21.9kV 22kV 24kV 25.8kV MV Single phase outdoor vacuum Auto Circuit recloser Source Manufacturer
Rated voltage 21.9kV
Rated normal current 630A
Rated short circuit breaking current 16kA
Power frequency withstand voltage 85kV/min
Rated lightning impulse voltage 185kV
manual closing No
Series RCW

Product descriptions from the supplier

Description

Description:

As a pioneering original equipment manufacturer (OEM) in China’s recloser industry, we have accumulated decades of R&D expertise, taken the lead in establishing the original industry standards, built a fully independent end-to-end production system, and delivered reliable product solutions for power grid construction.

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:

  • Voltage Versatility: Compatible with 21.9kV/22kV/24kV/25.8kV MV systems, ideal for diverse outdoor power grid scenarios.

  • Single-Phase Vacuum Technology: Adopts vacuum interrupter structure, ensuring zero arc leakage and reliable short-circuit breaking performance.

  • Automatic Reclosing Function: Realizes multiple auto-reclosing cycles, effectively reducing power outage time and improving grid stability.

  • Outdoor-Ready Design: IP66-rated enclosure (customizable) with corrosion-resistant coating, suitable for harsh environmental conditions like high humidity and extreme temperatures.

  • Source Manufacturer Advantage: Full-chain independent R&D and production, customizable parameters to meet regional grid standards and project requirements.

  • High Mechanical & Electrical Life: Long service life with 10,000+ mechanical operations, minimizing maintenance costs for power utilities.

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.

Rated maximum voltage

21.9kV

Rated maximum current

1250A

Rated frequency

50Hz

Rated short circuit breaking current

12.5kA

Rated peak value withstand current

31.5kA

Rated 1min power frequency withstand voltage (Single-phase Epoxy resin pole)

85kV

Rated lightning impulse voltage (Single-phase Epoxy resin pole)

185kV

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 (Single-phase Epoxy resin pole)

≤2

Opening time

≤20ms(Magnetic actuator)

Closing time

≤30ms(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 (Single-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(⁽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:

正方型 单相.png

 What are the scenarios in which the 38kV outdoor vacuum recloser is used?

  • 38kV Overhead Transmission Lines: Widely used in branch lines and end lines of 38kV overhead transmission lines as control and protection devices. When a fault occurs in the line, the recloser can quickly interrupt the fault current and automatically perform reclosing operations, reducing downtime and improving power supply reliability.

  • 38kV Substation Outgoing Lines: Installed on the outgoing side of 38kV substations to control and protect the electrical connections between the substation and the transmission lines. When a fault occurs in the substation outgoing lines, the recloser can promptly isolate the fault, ensuring the safe operation of the substation, and quickly restore power supply through the reclosing function.

  • 38kV Distribution Network Automation System: As one of the key devices in the distribution network automation system, the recloser works in conjunction with other intelligent devices to achieve remote monitoring, control, and fault location functions for the distribution network. By communicating with feeder terminal units (FTUs) and distribution automation master stations, the recloser receives control commands and uploads operational status information, enhancing the automation level and operational management efficiency of the distribution network.


Documentation Resource Library
Restricted
27kV automatic recloser technology specification
Technical Data Sheet
English
Consulting
Consulting
Restricted
10 to 38kV auto vacuum break recloser Catalog
Catalogue
English
Consulting
Consulting
Know your supplier
Online store
On-time delivery rate
Response time
100.0%
≤4h
Company overview
Workplace: 108000m²m² Total staff: 700+ Highest Annual Export(usD): 150000000
Workplace: 108000m²m²
Total staff: 700+
Highest Annual Export(usD): 150000000
Services
Business Type: Design/Manufacture/Sales
Main Categories: High Voltage Electrical Apparatus/Electric transformer
Whole life care manager
Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.
The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.

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