Loop Impedance Testers

What is loop testing?
Loop testing is a quick, convenient and highly specific method of evaluating an electrical circuit for its ability to engage protective devices (circuit breakers, fuses, Ground-fault circuit interrupter).
There are 5 test methods:
• two-wire high-current
• two-wire no-trip with dc injection
• three-wire no-trip
• two-wire no-trip
• four-wire grid impedance testing

The main reason for earth loop impedance testing, is to verify that if a fault occurs in an electrical installation, sufficient current will flow to operate the fuse or circuit breaker protecting the faulty circuit within a predetermined time. The objective is to make sure that the circuit is disconnected fast enough to prevent overheating and possibly a fire.
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detalji proizvoda Proizvođač Loop Impedance Test Type Best Loop Test Accuracy Resolution Safety Category Power Source Dimensions Weight Height Model Number p Length Width Maximum Operating Temperature Safety Category Level Minimum Operating Temperature Safety Category Voltage
Martindale RSLP2000 Loop Impedance Tester 2 Wire ±2% CAT III LP2000 Martindale 2 Wire ±2% 0.01 Ω, 0.1 Ω CAT III - 190 x 90 x 54mm 400g 54mm LP2000 190mm 90mm - CAT lll - 260V
RS PRO Loop Impedance Tester 3 Wire ±2% IPT1800 RS Pro 3 Wire ±2% 0.01 Ω - Mains 180 x 130 x 70mm 800g 70mm IPT1800 180mm 130mm +40°C - 0°C -
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