Item
Description
1
Supply Connector
Provides the Control Unit with mains power.
Carries Support Carriage monitoring signals.
Provides protective earth connection.
2
Signal Connector
Carries DC Current Generator control signals.
Carries DC Current Generator current measurement signals.
3
Power Connector
Detects connected DC Current Generators.
Powers the DC Current Generator electronics.
Provides protective earth connection.
The interface for testing DC Protective Relays is positioned at the rear of the Control Panel. The ‘Trip input 1’ is also
used for measuring High-speed DC Circuit Breaker reaction times.
1
2
3
4
Fig 8:
Control Unit: Interface DC Protection Relay.
Item
Description
1
Output mA
used for secondary injection.
2
Output mV
used for secondary injection.
3
Trip Input 1
input for potential-free trip signals.
4
Trip Input 2
input for potential-free trip signals.
4.7 Work surface cover
A work surface cover is provided to create a working surface for administrative purposes.
Fig 9:
Work surface cover.
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BALTO Modular hardware
