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Standard

Standard Telephones And Cables Limited
Oakleigh Road
New Southgate
London N11


1953 logo

Late 1953 logo


The company exhibited a model town in which their Direct Current Biasing System for control of Street Lighting, A.R.P. Services and Off Peak Load was demonstrated. It had been adopted in 30 boroughs and electricity undertakings and it was claimed to have the lowest maintenance costs possible in any centralised control system. An ordinary six volt heavy duty car type battery is used in each sub-station to inject into the low tension alternating current network direct current impulses whenever control has to be performed. Robust relays together with simple chokes for suppressing the alternating current from the receiving unit can be connected anywhere in the network. - APLE Conference Programme 1939


References:
APLE Conference Programme Glasgow 1939