Three phase, three wire kilowatt hour meter.
The meter is approximately 8 inches square (20cm), and 7 inches depth (18cm).
One of the small spacers on the back has broken off.
There are six holes on the bottom edge for wiring - two holes for each phase. There is no neutral connection.
The six terminals along the lower edge each have two screws. Wires enter from below.
The two small L shaped pieces of metal are the connections for the potential (voltage) coils. Removing the screw from these isolates the coils from the main terminals, so that equipment can be connected for testing purposes.
As is common with this type of dial register, each pointer rotates in the opposite direction to the previous one.
3x10 Amps, 50 Periods, 3ph.3w.
3x400 Volts, 150 Revs / kWh
No. T 17055
There are two coils, one on each side of the meter. Wiring is colour coded red and blue, for the red and blue phases respectively. The black wires connect to the yellow phase.
There are two coils, one for the red phase and one for blue. This meter has no neutral connection, so it is not necessary to have another coil for the yellow phase.
Both covers are secured with two screws which have holes for sealing wire.
This meter is shown working with a phantom load arrangement. View this video on Youtube.