Connecting Power Source; Connecting A Nominal 48/60 Volt Positive Power Source - Cabletron Systems 9C214-2 Installation Manual

Installing the 9C214-2 Power Supply

Connecting Power Source

A nominal 48 or 60 volt positive or negative power source can be connected to a
9C214-2 Power Supply. Follow the appropriate steps starting below to make the
proper connection.

Connecting a Nominal 48/60 Volt Positive Power Source

The nominal 48/60 volt positive power source is connected to a 9C214-2 Power
Supply using at least number 10AWG (5 square millimeters) copper wire to which
ring or spade terminals that will accept a number ten screw have been attached.
Connect the power source to the connections on the terminal block on the 9C214-2
Power Supply (Figure 2-2) by following the steps below.
1. Interrupt power at the nominal 48/60 volt power source.
2. Turn off the power supply circuit breaker.
3. Remove the cover protecting the terminal block.
4. Connect the earth ground lead to the earth ground terminal.
5. Connect the 48/60 volt return lead to the negative terminal.
6. Connect the 48/60 volt lead to the positive terminal.
7. Replace the cover on the terminal block.
8. Restore power to the 48/60 volt power source.
9. Turn on the power supply circuit breaker.
If the input polarity detection buzzer sounds after turning on the power supply
NOTE circuit breaker, the connections are wrong. Turn off the power supply circuit
breaker, interrupt power at the nominal 48/60 volt power source, disconnect the
power source and make the necessary changes to the existing connections.
Figure 2-2. Connecting a nominal 48/60 volt Positive Power Source
2-4
48/60 volt lead
48/60 volt return lead
earth ground lead
48/60 volt source