4120A - LOOP / PSC Tester
Custom microprocessor controlled for highest accuracy and reliability. 3 LEDs for checking correct wiring status. 15mA LOOP measurement:LOOP impedance 2000Ω range measurement is carried out with low test current (15mA). The current will not cause tripping out involved RCD even the one with the lowest nominal differential current (30mA). Model 4120A has the automatic RCD(ELCB)lock device. There is no need to by-pass most passive RCD's at distribution boards when conducting LOOP or PSC tests.
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Kyoritsu Electrical Instruments Works, Ltd.
Room 228, 2nd Floor No. 12 Zhong Shan
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