The test equipment you asked for it!. It consists of two parts:

- Suitable for testing metal enclosed switchgear, used by panel manufacturing companies, and other industries.
- Outputs: 0-2500A, 2.5V /  0-5000A, 1V /  0-200A, 2.5V / 24, 48 and 110VDC, equipped with timer and microampere meter.
- Annunciator Unit 9 windows & 12 windows Used in high voltage substations.
- Energy meter test equipment (at design and prototype stage).
- Primary injection
- Current: 0-2000A variable
- Secondary injection
- Current: 0-20A variable 0-100A variable
- Voltage: 0-350V variable (rectified AC) 0-400V variable (AC)
- Equipped with current limiting resistors (for E/F relays)
- Equipped with capacitor for current / voltage shift (directional E/F)
- Equipped with timer 0.001-999.999 sec (1msec resolution)
- Equipped with power cable, current & voltage cables
- Equipped with Ameters / voltmeters
- Cost effective, affordable price long life
- Easy to use

Application:

- Test of relays O/C , O/V , U/V, E/F
- Contactors, bimetals, RCCB, MCB circuit breakers C.T & P.T ratio test
- C.T magnetizing curve test
- C.B contacts, disconnector switch, joints, bus bar, ...
- Voltmeter, Ameter

Every electrical installations may need AK73, but if you are a panel manufacturer, you definitely need this test equipment.