The 750ADM-H has two outputs, allowing injection of currents as low as a few hundred milliamps and up to 750A. Voltages up to 16V are available on the 40A output, allowing higher impedance trips to be tested. Four true RMS metering ranges are provided, allowing the full scale of the meter and trip level to be set independently of the selected output. The metering has a capture time of less than 20ms, allowing the RMS of a single cycle to be accurately measured. Industry standard connectors are used on all inputs and outputs for convenience, reliability and safety.
The 750ADM-H is comprehensively protected by electronic overcurrent and thermal trips.
The timing system is very flexible without compromising ease of use, allowing trip times, reset times and reclose times to be quickly measured to a high degree of accuracy. Two contact inputs are provided, each of which may be trigged by a volt-free contact or a dc voltage. The contact inputs auto-sense for normally open or normally closed contacts.
The 750ADM-H can be used to test many devices including:
Circuit breakers
Primary injection of over-current relays
Auto-reclosers
MCB’s
CT ratio (with external meter for secondary current)
Features
· Primary injection up to 750A
· 4V output*
· 16V 40A output for secondary injection
· True RMS digital metering with single cycle capture
· Multi-function timing system
· Large back-lit liquid crystal display
· Thermal and over-current protection
· Automatic switch-off at end of test
· Compact and portable
· Automatic mains voltage selection*
· Clear and simple user interface