Home hv diagnostics 750adm mk2 750adm h mk2 current injector
HV Diagnostics 750ADM mk2 / 750ADM-H mk2 Current InjectorThe 750ADM mk2 and 750ADM-H mk2 are compact, rugged primary current injection systems with a 750A capability. The 750ADM has a maximum no load output voltage of a 3.5V and the 750ADM-H has a maximum voltage of 5V. The units are ideally suited to all low power primary injection tasks requiring up to 750A for short periods. The units have 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 thermal trips. The timing system is very flexible without compromising ease of use, allowing trip times, reset time, 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 can be used to test many devices including: circuit breakers, primary injection over-current relays, auto-reclosers, MCB’s, CT ratio (with external meter for secondary current).FEATURES• Easy to use, ergonomic, menu guided, large backlit user interface• Rugged, one piece portability• Large output load capability (up to 15µF)• Automatic and integrated load capacitance measurement with optimum frequency selection• Storage of test results for later retrieval or download to a PC/Laptop• No oil or arcing contacts that require routine maintenance• Short circuited protected with active arc manage-ment regulation that avoids the usual nuisance tripping of conventional HV test equipment