10kV Short-Circuit Current Limiter
Key attributes
| Brand | RW Energy |
| Model NO. | 10kV Short-Circuit Current Limiter |
| Rated voltage | 12kV |
| Rated normal current | 630A |
| Rated frequency | 50/60Hz |
| Series | DDX |
Product descriptions from the supplier
Product Introduction
The DDX1 Short-Circuit Current Limiter (abbreviated as: Current Limiter) is a high-speed switch with short-circuit current breaking capability. It can completely interrupt the short-circuit current within 10ms after a short-circuit fault occurs, before the instantaneous value of the short-circuit current rises to the expected peak.It integrates fast cutting technology, high-voltage current limiting technology, electronic measurement and control technology, and high-voltage insulation technology. This integration enables rapid current limiting and breaking of short-circuit currents in power generation, distribution, and consumption systems, preventing key power equipment such as generators and transformers from being impacted by catastrophic short-circuit currents.At the same time, it can also optimize the operation mode of the distribution system, achieving the effects of energy conservation and consumption reduction, improving power quality, and enhancing power supply reliability.
Product Features and Benefits
Strong short-circuit breaking ability (large capacity): rated breaking short-circuit current 50kA~200kA.
Fast breaking speed (high speed): full breaking time less than 10ms.
The breaking process has obvious current limiting characteristics (current limiting).
The action criterion adopts the instantaneous value of current and the instantaneous value of current change rate.
The current sensor is integrated with the fast isolator, and the structure is simplified.
The electronic controller works independently in three phases through high temperature and strong interference tests to ensure the overall reliability of the product.
Electrical parameters
serial number |
Parameter Name |
unit |
Technical parameters |
|
1 |
Rated voltage |
kV |
12 |
|
2 |
Rated current |
A |
630-6300 |
|
3 |
Rated expected short-circuit breaking current |
kA |
50-200 |
|
4 |
Current limit coefficient = cut-off current / expected short-circuit current peak |
% |
15~50 |
|
5 |
Insulation level |
Power frequency withstand pressure |
kV/1min |
42 |
Lightning impact withstand pressure |
kV |
75 |
||
Product Usage
Bypass current limiting reactor (energy saving and consumption reduction, eliminating reactor reactive power, and improving power supply quality).
Parallel operation of segmented buses in large-capacity power distribution system (optimizing load distribution and reducing network impedance).
Short-circuit protection at generator outlet or low voltage side of transformer.
Short-circuit protection for power plant branch buses and plant high variations.
Related Products
Related Knowledges
-
HECI GCB for Generators – Fast SF6 Circuit Breaker1.Definition and Function1.1 Role of the Generator Circuit BreakerThe Generator Circuit Breaker (GCB) is a controllable disconnect point located between the generator and the step-up transformer, serving as an interface between the generator and the power grid. Its primary functions include isolating generator-side faults and enabling operational control during generator synchronization and grid connection. The operating principle of a GCB is not significantly different from that of a standard c01/06/2026 -
Distribution Equipment Transformer Testing, Inspection, and Maintenance1.Transformer Maintenance and Inspection Open the low-voltage (LV) circuit breaker of the transformer under maintenance, remove the control power fuse, and hang a “Do Not Close” warning sign on the switch handle. Open the high-voltage (HV) circuit breaker of the transformer under maintenance, close the grounding switch, fully discharge the transformer, lock the HV switchgear, and hang a “Do Not Close” warning sign on the switch handle. For dry-type transformer maintenance: first clean the porcel12/25/2025 -
How to Test Insulation Resistance of Distribution TransformersIn practical work, insulation resistance of distribution transformers is generally measured twice: the insulation resistance between thehigh-voltage (HV) windingand thelow-voltage (LV) winding plus the transformer tank, and the insulation resistance between theLV windingand theHV winding plus the transformer tank.If both measurements yield acceptable values, it indicates that the insulation among the HV winding, LV winding, and transformer tank is qualified. If either measurement fails, pairwise12/25/2025 -
Design Principles for Pole-Mounted Distribution TransformersDesign Principles for Pole-Mounted Distribution Transformers(1) Location and Layout PrinciplesPole-mounted transformer platforms should be located near the load center or close to critical loads, following the principle of “small capacity, multiple locations” to facilitate equipment replacement and maintenance. For residential power supply, three-phase transformers may be installed nearby based on current demand and future growth projections.(2) Capacity Selection for Three-Phase Pole-Mounted Tr12/25/2025 -
Transformer Noise Control Solutions for Different Installations1.Noise Mitigation for Ground-Level Independent Transformer RoomsMitigation Strategy:First, conduct a power-off inspection and maintenance of the transformer, including replacing aged insulating oil, checking and tightening all fasteners, and cleaning dust from the unit.Second, reinforce the transformer foundation or install vibration isolation devices—such as rubber pads or spring isolators—selected based on the severity of vibration.Finally, strengthen sound insulation at weak points of the ro12/25/2025 -
Risk Identification and Control Measures for Distribution Transformer Replacement Work1.Electric Shock Risk Prevention and ControlAccording to typical design standards for distribution network upgrades, the distance between the transformer’s drop-out fuse and the high-voltage terminal is 1.5 meters. If a crane is used for replacement, it is often impossible to maintain the required minimum safety clearance of 2 meters between the crane boom, lifting gear, slings, wire ropes, and the 10 kV live parts, posing a severe risk of electric shock.Control Measures:Measure 1:De-energize th12/25/2025
Related Solutions
-
Distribution automation systems solutionsWhat are the difficulties in overhead line operation and maintenance?Difficulty one:Overhead lines of distribution network have wide coverage,complicatedterrain,many radiation branches and distributed power supply,resultingin "many line faults and difficulty in fault troubleshooting".Difficulty Two:Manual troubleshooting is time-consuming and laborious.Meanwhile,therunning current,voltage and switching state of the line cannot be graspedin real time,because of the lack of intelligent technical m04/22/2025 -
RW8000 DMS Distribution Management System SolutionsOverviewNowadays, the development trend of power grid is intellectualization. As an important part of power grid, the power distribution system is very close to the customers and it has to run properly. The distribution management system (DMS）played an important role in it.Introduction:RW8000 power distribution management system (DMS) is designed for the smart grids. It is based on real-time application, centered on distribution network operation and management, focusing on the business process09/07/2023 -
High-Precision Electrical Parameter Monitoring System Solution1.IntroductionWith the increasingly stringent requirements for power supply quality in high-end facilities such as precision manufacturing, medical diagnosis, and data centers, traditional power monitoring systems, due to their low sampling accuracy and weak data analysis capabilities, can no longer meet the demand for deep insight and precise management of power quality. In response, we are introducing a new generation High-Precision Electrical Parameter Monitoring System. With millisecond-l09/28/2025
