The Hampden Model VT-100A is a compact, general purpose AC power supply that consists of a single gang variable autotransformer housed in an all steel portable case.
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The Hampden Model ET-100 transformer is rated 120 volt-amperes at 60 Hertz, and has two primary and two secondary windings. It can be used as an isolation or autotransformer.
The Hampden Model AT-100 consists of a multi-tapped autotransformer with multiple primary and secondary taps terminated at binding posts mounted on the front of the unit. It can be used either for stepping up or stepping down voltages.
The Hampden Model T-100A consists of a single-phase transformer with multiple primary and secondary taps that are terminated at binding posts mounted on the units front panel. The unit may be used singly or several units may be interconnected in series, in parallel, or three-phase configurations.
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The Hampden Model T-100-3A consists of three single-phase transformers with multiple primary and secondary taps terminated at socket receptacles on the front of the unit. Each of the three transformers may be used independently, or the three may be interconnected into wye and delta configurations.
The Hampden Model CT-100A is an encapsulated secondary winding, used to isolate instrumentation from the primary circuit, or to step down current to match the instrument range.