Lightning NDCD

Following the successful launch of the Lightning DC switchgear product, we have extended the DC product range with the introduction of a DC disconnector solution for DC traction applications - the Lightning NDCD off-load disconnector.

Features

Offered in a range of current ratings, this new DC disconnector can be incorporated within the Lightning DC switchboard, or supplied loose within free-standing or wall mounting enclosure(s). Available in both 2-position (on/off) and 3-position (changeover) options, the NDCD utilises the superior technology used in the NDC circuit breaker, addressing the number of problematic factors associated with past DC isolators.

  • Specifically designed for DC applications, rather than converting an existing AC isolator
  • Compact design
  • Can be configured either as an isolator or as a changeover switch
  • Very low resistance – typically 5 µΩ for entire switch
  • Ability to withstand very high short circuit currents (It has been tested up to 183kA)
  • Big isolating gap
  • Can be manually or motor driven, or both
  • Available as component or mounted in enclosure

For Spares, Service and Repair, please click here.

Ratings

Category

 

Category 1 disconnector, off-load

Number of plates

 

1

Operation

 

Motor driven / Manual / Both

Rated Voltage

V dc

1800

Rated Service Current

A

2000 / 4000 / 6000 / 8000

Rated Insulation Voltage

V dc

3000

Rated Impulse Withstand to Earth

kV

20

Rated Impulse Withstand across Isolating Distance

kV

24

Power Frequency Withstand to Earth

kV

9.2

Rated Impulse Withstand across Isolating Distance

kV

11

Rated Auxiliary Supply Voltage

V dc

110

Rated Short-Time Withstand Current

kA

180 peak (125 steady state)

Standard Auxiliary Contact(s) (more available on request)

 

1n/o 1n/c at each position(s)

 

Applications

The Lightning NDCD has a wide range of DC Traction applications:

  • Heavy & Light Railways
  • Mass Rapid Transit
  • Tram Systems

get in touch

Contact HSS

+44 (0)1495 223001

+44 (0)1509 611511

+ 61 7 3888 2333

what we've done

case studies

SSEN - Horizon Framework

Electricity Northwest Ltd - MediPark