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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Detalii produs Marca Stock Loop Impedance Test Type Maximum Voltage Measurement Best Loop Test Accuracy Resolution Safety Category Power Source Dimensions Weight Height Model Number p Length Maximum Operating Temperature Width Safety Category Voltage Safety Category Level Minimum Operating Temperature
Megger LTW315-EU-BS Loop Impedance Tester 2 Wire, 3 Wire 440V ±10% CAT IV 300 V, IEC 61010 LTW315 Megger 13 2 Wire, 3 Wire 440V ±10% - CAT IV 300 V, IEC 61010 Battery 203 x 148 x 78mm 1kg 78mm LTW315 203mm +50°C 148mm 300V CAT IV -10°C
RS PRO Loop Impedance Tester 3 Wire ±2% IPT1800 RS Pro 2 3 Wire - ±2% 0.01 Ω - Mains 180 x 130 x 70mm 800g 70mm IPT1800 180mm +40°C 130mm - - 0°C
Martindale RSLP2000 Loop Impedance Tester 2 Wire ±2% CAT III LP2000 Martindale 1 2 Wire - ±2% 0.01 Ω, 0.1 Ω CAT III - 190 x 90 x 54mm 400g 54mm LP2000 190mm - 90mm 260V CAT lll -
Megger LT300-EN-BS Loop Impedance Tester 2 Wire 550V ±5% CAT IV 300 V LT300 Megger 1 2 Wire 550V ±5% 0.1 Ω CAT IV 300 V Battery 203 x 148 x 78mm 980g 78mm LT300 203mm +60°C 148mm 300V CAT IV -10°C
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