Loop Impedance & PSC Testers

2 products

The Loop Impedance & PSC Testers Collection includes tools made for evaluating safety parameters in electrical installations. Loop impedance testers determine fault loop resistance, while Prospective Short-Circuit Current (PSC) testers predict maximum current during electrical faults. Built for electricians, maintenance technicians, and compliance inspectors, they offer quick, safe, and accurate readings. These testers often feature rugged casing, automatic range selection, and one-handed operation, tailored for use on-site in residential, commercial, and industrial settings to ensure system integrity.

Frequently Asked Questions

These testers are used to verify the safety of an electrical circuit by measuring the Earth Fault Loop Impedance and calculating the Prospective Short Circuit (PSC) current. HK Calibrations supplies these essential tools to Australian electricians to ensure that in the event of a fault, protective devices like circuit breakers and fuses will trip fast enough to prevent fire or electric shock.

PSC measurement determines the maximum current that could flow through a circuit during a short circuit. HK Calibrations provides testers that help Australian contractors ensure that the installed switchgear and circuit breakers have an "interrupting capacity" high enough to safely handle a major fault without exploding or failing.

Traditional loop tests can sometimes trip RCDs (Safety Switches) during the testing process. HK Calibrations stocks advanced testers with "No-Trip" technology, allowing Australian technicians to measure loop impedance on active circuits without shutting down power to sensitive equipment or causing nuisance tripping.

To comply with Australian Standards (such as AS/NZS 3000 and AS/NZS 3760), these instruments should undergo professional calibration every 12 months. HK Calibrations offers ISO-traceable calibration at our Australian laboratories to ensure your safety readings remain accurate and legally defensible.

Yes, our range includes testers designed for standard 230V/240V single-phase domestic systems as well as 415V three-phase industrial applications. HK Calibrations ensures Australian sparkies have the right gear to test everything from residential switchboards to heavy-duty industrial plant wiring.

You receive expert local technical support, a rapid 48-hour service turnaround, and free shipping Australia-wide. HK Calibrations ensures your Loop Impedance and PSC testers are professionally certified and ready to verify the safety of any Australian electrical installation.