Safebond

The BRUSH Switchgear SafeBond integrates the feeder circuit breaker function and the remote bonding function into one standard Lightning panel footprint, a big advantage in floor space saving, civil engineering, cabling and operational consistency and safety.

The SafeBond incorporates the NDC high speed, unidirectional circuit breaker, featuring the award-winning magnetic actuator, to carry out the making and breaking of all load and fault currents, whilst an “off-load” motorised two position disconnector selects the circuit.

With the disconnector in the positive position and the NDC CB closed, the positive busbar is connected to the track feeder cable thereby functioning as a standard feeder circuit breaker. 


Downloads  
Safebond Datasheet

2 Pole datasheet

  • Same footprint as standard Lightning panel – 450mm x 1526mm
  • Feeder circuit breaker and bonding functions integral to one panel
  • Fully rated, type tested and proven NDC circuit breaker does the making and breaking
  • Proven ‘off-load’ 2 position disconnector selects the circuit
  • Disconnector in positive position – Feeder circuit breaker function
  • Disconnector in negative position – negative bonding function
  • Electrical control/interlocking schemes to suit customer requirements
  • SCADA Remote control of complete unit as standard
  • No additional civil engineering/cabling costs
  • No additional outdoor housing costs
Nominal Voltage V dc 750 1500
Rated Voltage V dc 900 1800
Rated Insulation Voltage kV 1800 3000
Power-Frequency Withstand Level kV (ac)

9

9
Rated Impulse Withstand Level kV (ac) 20 20
Rated Short-Time Withstand Current kAp/kA 100 / 71 250ms 100 / 71 250ms
Rated Short-Circuit Current kAp/kA 180 / 125 142 / 100
Auxiliary Operating Supply V dc 48 / 110 / 220 48 / 110 / 220
Specified Service Life Years 30 30
Standards   BS EN 50123 BS EN 50123
Environmental Conditions

 

As EN 50123-1 clause 4.1, normal As EN 50123-1 clause 4.1, normal
Max and Min Operating Temperature Deg C 40 / -5 40 / -5
Degree of Pollution   EN50124-1 PD4 EN50124-1 PD4

 

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