PETROL - ELECTRIC CHARGER SET
Example of an early 'Engine Applications Ltd (Swan)' charger
In order to ensure that power supplies for the underground post lighting or post radio (if available) are continuously available, a petrol-electric charging set was supplied at each monitoring post during 1967 to charge batteries to run this equipment. Two kinds of charger were in use by the Corps during their operational period up until the mid 1980's when a newer charger was introduced.
Early examples consisted of a Villiers four-stroke engine coupled to an alternator and producing direct current by means of a metal rectifier. There was no external voltage regulator, but the output current, indicated by an ammeter on the set, can be regulated by the use of a throttle control. The two kinds of early examples were manufactured by A.C. Morrison (Engineers) of Southampton and Engine Applications Ltd of Banbury. The initial cost of these chargers were £45* or £52* each.
A later model was introduced in the 1980's. Manufactured by Yamaha, the charger consisted of a Yamaha four-stroke engine with integral generator. The unit produced 240 volts AC for cooking / heating, and 12 volts DC for battery charging. Like the earlier models, there was no external voltage regulator and the generator was a constant speed, constant output power supply.
Early examples consisted of a Villiers four-stroke engine coupled to an alternator and producing direct current by means of a metal rectifier. There was no external voltage regulator, but the output current, indicated by an ammeter on the set, can be regulated by the use of a throttle control. The two kinds of early examples were manufactured by A.C. Morrison (Engineers) of Southampton and Engine Applications Ltd of Banbury. The initial cost of these chargers were £45* or £52* each.
A later model was introduced in the 1980's. Manufactured by Yamaha, the charger consisted of a Yamaha four-stroke engine with integral generator. The unit produced 240 volts AC for cooking / heating, and 12 volts DC for battery charging. Like the earlier models, there was no external voltage regulator and the generator was a constant speed, constant output power supply.
| PE Battery Charger Instructions |
Notes:
* - 1960's Prices
Information Source Copyright: National ROCA Archive
* - 1960's Prices
Information Source Copyright: National ROCA Archive