LIVE IMPEDANCE AND FAULT CURRENT TESTING, EVALUATION OF CONDITIONS


FOR AUTOMATIC DISCONNECTION A 1143 Euro Z 290 A


The safe and efficient running of an electrical system relies on good connectivity between conductors, joints, busbars, switches and compo- nents on the way from the power source to the load. Loop impedance testing is one of the best options for finding the cause of losses, high voltage drops, faults on live circuits and bad contacts.


The A 1143 Euro Z 290 A is a professional portable high current imped- ance tester. It performs high precision line and fault loop impedance measurements in environments up to CAT IV / 300 V. It is used to test power transformers and motor windings. The main users are mainte- nance engineers in power utilities. The instrument is designed to work independently or in conjunction with the MI 2086 Eurotest 61557, MI 3101 EurotestAT, MI 3105 EurotestXA and MI 3321 MultiServicerXA.


MEASURING FUNCTIONS: • High precision line impedance; • High precision fault loop impedance; • Contact voltage.


APPLICATION: • High accuracy loop and line measurements; • Power transformer and motor winding measurement.


TESTING THE SAFETY OF SWITCHBOARDS, MACHINES AND PORTABLE APPLIANCES MI 3321 MultiServicerXA


The term “safety management” summarizes all necessary steps that must be taken to assure the safety of electrical equipment through its complete lifetime. The primary goal is to ensure that the equipment is safe to use and to avoid hazardous situations that can cause electric shock, fire and explosion.


Many different loads, switchgear, control gear, machines, motors, extension leads, tools or appliances could be connected to the power system. The MI 3321 MultiservicerXA tester is an all in one testing solution with built in fast autotest solution to ensure the safety of all the parts that require safety testing.


The MI 3321 MultiServicerXA multifunctional portable test instrument is intended to perform all necessary measurements for testing the elec- trical safety of portable electrical equipment, machines and switchgears. It is the first machine tester covering all necessary tests according to new IEC/EN 60204 ed.5 including Loop impedance, RCD and HV tests.


MultiServicerXA enables measurement of discharge time, power and current consumption and resistance to excessive voltages which are the main parameters in the safety testing of hard wired appliances and large machinery. With a simple user interface, large graphic LCD, QWERTY keyboard, help menus with connection diagrams and extra ports for test- ing fixed installations the MI 3321 is the best solution for safety testing.


MEASURING FUNCTIONS: • Continuity tests (200 mA, 10 A); • Insulation resistance; • Substitute leakage; • Differential leakage current; • Touch leakage current; • IEC cord polarity test; • Leakage and TRMS load currents with current clamp; • Portable RCD test; • RCD test; • Functional test.


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APPLICATION: • Factory machinery safety testing; • Industrial safety testing; • Portable appliances safety testing; • Switchgear safety testing.


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