| Brand | ROCKWILL |
| Model NO. | 15.5kV 24kV 27kV 30kV outdoor Single-phase Automatic vacuum Recloser Source Manufacturer |
| Rated frequency | 50/60Hz |
| Rated line charging current | 10A |
| Ingress Protection (IP) | IP66 |
| Series | RWDRC |
Description ：
As the pioneer and first professional OEM in China’s recloser industry, we’ve built robust R&D and manufacturing capabilities over decades, and set the industry original standards with groundbreaking achievements.We’ve established a fully independent ecosystem spanning core R&D, mass production and delivery, delivering reliable, high-performance and sustainable solutions for power grid construction.
The RWDRC series of single-phase reclosers are designed in accordance with IEC 62291-111-2019 (IEEE C37.60-2018). They are distribution network solution products that integrate multiple technologies such as current protection, communication, and self-power supply from line current.In terms of fault positioning, the device uses a variety of advanced technical means, such as traveling wave ranging and impedance method.
When a cable fault occurs, these technologies can quickly and accurately determine the location of the fault point with a very small margin of error. This greatly shortens the time for fault troubleshooting and repair, reducing the power - outage time and its impact on users.
This product is suitable for the protection of branch lines of overhead lines in the distribution network or the protection of user boundaries. When a permanent fault occurs on the line, it can quickly cut off the fault to prevent the fault from spreading to the main line. When a temporary fault occurs on the line, the line power supply can be restored through multiple reclosing operations, reducing the power outage time and improving the reliability of power supply.
Feature
Automatic Fault Isolation
Automatic Service Restoration
Fault Detection and Protection
Sectionalizing Protection
High Reliability and Durability
Environmentally Friendly
Main function introduction:
Fault Detection and Isolation
Reclosing Function
Multiple Reclosing Control
Protection Coordination Function
Technology 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 voltage |
27 kV |
15.5 kV |
Rated frequency |
50 Hz / 60 Hz |
|
Neutral point grounding mode |
effectively grounded |
|
Power frequency withstand voltage |
60kV (dry form, 1 min) 60kV (wet, 10s) |
50kV (dry form, 1 min) 50kV (wet, 10s) |
Lightning impact withstand voltage |
150 kV |
110 kV |
Rated current |
40/100/200A |
|
Rated short circuit open break current |
6.3 Thousand Ann |
|
Short circuit break time |
68 Times |
|
Rated short-time withstand current (peak value) |
16.4kA (100A / 200A) 10.4kA (40A) |
|
Rated short circuit current (peak) |
16.4kA (100A / 200A) 10.4kA (40A) |
|
Duration of short-circuit |
1s (Model 100A and 200A) 0.5 seconds (Model 40A) |
|
Rated line charging current |
10A |
|
Rated cable charging current |
25A |
|
Rated operation order |
O1-CO-t2-CO-t2-CO t1 = 0.5s 30s and t2 = 1s 30s(adjustable) |
|
Maximum reset time |
180 Seconds |
|
Minimum trip current |
Any current above this value and less than 6.3 kA is programmable |
|
Self-supply minimum line current |
1.5A (for type 40A and 100A)；2A (for type 200A) |
|
Mechanical life |
10000 Times |
2000 Times |
IP grade (recenter) |
IP66 |
|
Main circuit resistance |
4200 μΩ(for type 40A)；200 μΩ(for type 100A)；700 μΩ(for type 200A) |
|
1.1 Ur local discharge |
The 20 pieces |
|
weight |
12 Kg |
|
Estimated product life (including spare parts) |
20 years (switch part)；0 years (control unit)；0 battery |
Vacuum arc-extinguishing chamber parameters
Project |
Rating |
Rated voltage |
27 kV / 15.5 kV |
Rated current |
200A (covering 40A / 100A) |
Rated short-circuit breaking capacity |
6.3 Thousand Ann |
Magnetic force actuator parameters
Project |
Rated value (RYDRC-29) |
Rated value (RYDRC-15.5) |
Rated voltage |
DC 300V |
DC 300V |
The contact opens the distance |
At 12 ±1mm |
9 ±1mm |
excess of stroke |
4 ±1mm |
And 2.5 ±0.5mm |
Average closure velocity (0-6mm) |
11-17 m/s |
0.8 ±0.2 m/s |
Average opening speed (0-6mm) |
0.8 ±0.2 m/s |
1.3 ±0.3 m/s |
Terminal time |
For 20 to 40 ms |
For 20 to 40 ms |
Business hours |
8-13 milliseconds |
8-13 milliseconds |
Contact-closed bounce time |
Admidia 5 ms |
Admidia 5 ms |
Current sensor parameters
Project |
Type 40A number |
Type 100A number |
Type 200A No |
Ratio |
100A/1V |
100A/1V |
200A/1V |
Accuracy class |
5P20 |
5P20 |
5P10 |
Load resistance |
2kΩ |
2kΩ |
2kΩ |
Structure diagram
Device structure:
Installation schematic diagram
Q:What is a recloser used for?
A:A recloser is an electrical device used in power distribution systems. It is primarily used to automatically reconnect an electrical circuit after a fault has been detected and cleared. This helps to minimize power outages and improve the reliability of the power supply by quickly restoring electricity to the affected area.
Q: What is the difference between a breaker and a recloser?
A:A breaker is a device that can open and close a circuit under normal and fault conditions to protect the system from overloads and short - circuits. A recloser, however, is designed to automatically close the circuit a few times after a fault, in the hope that the fault was temporary, reducing outage time.
Yes. Rockwill provides a comprehensive OEM/ODM program for the RCW vacuum recloser. However, we are very selective in our partner selection — we specifically seek manufacturers and local partners with strong technical capabilities, solid engineering background, and local service capacity. Our goal is to partner with entities that can not only distribute but also provide local technical support to promote our advanced technology.
A normal circuit breaker usually trips only once when a fault occurs. An automatic recloser can perform multiple opening and closing operations to clear temporary faults on overhead lines, without manual reset on site. This reduces outage time and improves supply reliability.
The vacuum interrupter also helps extend service life and reduces maintenance. We support Single-phase Recloser OEM/ODM China projects and provide Vacuum Recloser solutions for different distribution networks.
The recloser uses built-in sensors to collect current and voltage signals, identify the fault type, and calculate the fault distance. It supports advanced methods such as traveling wave ranging and impedance method, helping operators quickly locate the fault section in overhead distribution networks.
This reduces troubleshooting time and speeds up power restoration. Our Single-phase Recloser Factory integrates these functions into the recloser design for distribution automation.
Self-power supply means the recloser controller draws its operating power directly from the line voltage transformer, without needing an external auxiliary power source.
This simplifies on-site installation for overhead lines and reduces wiring complexity. It is especially useful in remote rural feeders and coastal distribution lines where auxiliary power is difficult to obtain.
Our Single-phase Recloser China Supplier team designs this function to improve installation efficiency and long-term reliability.
The Rockwill standard smart recloser offers high precision with a wide measuring range (2A–16,000A). Simply ensure your normal current is within this standard range when making a selection.
Yes. In addition to the standard 2A–16,000A range, Rockwill provides custom-configured units for ultra-low current measurement and protection in the 0.1A–2A range.
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