Factory made hot-sale XJM7 Measuring Box (Low Voltage Power Measurement Box) to Washington Factory
Exterior and dimensions
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XJM7 series of lighting Power metering box is suitable in power centralized measurement management of apartment buildings office buildings. Pulse-type power meter can be installed to according to the design needs to achieve computer management. Besides, proper location is preserved to install remote-measuring remote sensing equipment. There are small circuit breakers installed in the cabinet to protect the line from overload, short circuit. The power meter and circuit breaker rated current are selected by design.
In line with GB7251.1-1997 and 7251.3-1997 standards.
This video shows how the PST7140A Test Set is calibrated with a 2500A 50mV shunt and the BTSA-3 analyzer. It also shows how loud this unit is when delivering 5000 amps and more. Then, I demonstrate how to test a 225A molded case breaker for instantaneous trip and time delay at 3x (675A).