Overview
Incorporating The NDC Circuit Breaker
The BRUSH Switchgear Lightning product, incorporating the high-speed NDC Circuit Breaker, utilises award winning magnetic actuator technology and provides an innovative DC switchgear solution for a variety of markets and demanding applications.
Combining innovation with 50 years of DC circuit breaker design and manufacturing experience, the Lightening offers optimal safety, reliability and high speed performance – the ideal solution to your DC requirements.
Resources
ENGINEERING FOCUS
NDC Circuit Breaker at the Heart of Lightning DC
The patented arc transfer system prevents internal contamination of the circuit breaker compartment and cubicle.
The Cold Cathode Arc Chute Assembly dissipates all arcs whilst the transfer coil provides additional magnetic flux across the contact gap, assisting with the interruption of low currents that would otherwise lead to long arcing times.
The Magnetic Actuator is based on a solenoid plunger, and provides the motion required to close the main contacts and to reset the latch device on tripping.
Technical Specifications
| Property | Rating |
|---|---|
| Nominal Voltage | 750-1500V dc |
| Rated Voltage | 900-1800V dc |
| Rated Service Current | 4000/6000/8000A |
| Power-Frequency Withstand Level | 9 kV (ac) |
| Rated Short-Time Withstand Current | 100kAp / 71kA 250ms |
| Rated Track Time-Constant | 100ms |
| Rated Short-Circuit Current | 180kAP/125kA – 142kAP/100kA |
| Bi-directional Critical Current | 25-26A |
| Mechanical Endurance | 50,000 operations |
| Breaking Characteristic | High Speed |
| Rated Impulse Withstand | 20kVp |
| Insulation Category | OV4 |
| Auxiliary Operating Supply | 50V dc (other options available) |
Applications
Switchgear Services
From initial system analysis, to design, engineering, supply, installation, commissioning and upgrades of equipment through to repurposing or decommissioning. We provide lifecycle management and support.
CONTACT US
Speak to Our Team
BRUSH has a global reputation for service excellence and dedicated customer support. Whether it’s the provision of parts or the delivery of service support in the field, at the customer’s premises or at our network of Service Workshops.
With a wealth of experience and knowledge expanding over more than 145 years, the capabilities of BRUSH are endless and service unrivalled, with engineers stationed worldwide and spare parts ready 24/7/365, it is a truly global organisation.