CONVERTERS RINGING
No. 9A
This Converter Ringing is used when an external extension is fitted to a Planset N625.

This Ringer is powered from the power unit installed to operate the Plansets (Power Unit No. 53A - 10 volt DC).

The cover is called a Cover No. 73A and the relay a Relay No. 1475B.

The 75v AC output is on Terminals 1 and 8.

The 10 volt DC input power is connected to terminals 7 (+) and 3 (-).

The relay is connected to terminals 4 and 5.

Produced by GEC.

Modern equivalents to the GPO Ringers

Diagram - N626.

Drawing - 91851.

Specification - S843.

The cover, shown to the right, normally covers the relay


 
 
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Last revised: April 10, 2024

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