New technology for effective Earth continuity testing
The new test technology recognises that a 200mA test current is rapidly becoming the European .jpg "Zap test in action")
standard for in-service testing and testing after repair. Seaward’s new test technology uses a dual current high intensity test to overcome contact resistance problems or other situations where weak conductor connections may inhibit protective earth testing with conventional 200mA currents. The Seaward 200mA test has been specially designed to help overcome variations in measurement that can be caused by contact resistance between the test probe and the appliance under test, for example, when measuring continuity of tarnished or corroded parts such as a kettle element. The new Seaward test achieves this by applying a short duration high current pulse to ‘pre-condition’ the equipment under test, which is then followed by a 200mA test current to make the appropriate measurements.
