Kusam-Meco introduces a new high voltage proximity detector model 275HP/500HP. The 275HP/500HP is a high voltage proximity detector. It has eight voltage detection settings from 240Vac to 275KVac (275HP) & 240Vac to 500KVac (500HP). The 275HP / 500HP consist of an internal pickup sensor plate, a sensitivity selector, a visual and a sound annunciator. With the 275HP/500HP, physical contact with electrical conductors is not necessary when testing for live lines. This tester works by proximity.
Its sensor senses the radiated field which surrounds live conductors. Radiated field strength increases with voltage and decreases quickly with distance or earth shielding. Detecting distance of a 250Vac single live wire is approximately 10cm. With a bunched neutral and earth cable, as in a flexible cable, the distance is reduced to 5cm. 275HP / 500HP is a non-contact tester and it is advised that the tester should never come into contact with cables (KV) as this tester is merely a non-contact AC proximity tester. Checking or proofing the tester is easy. Switch the sensitivity to 240V and place the dome against a low voltage live conductor or rub the dome with a cloth or against an item of clothing as this generates a static DC which triggers the detection of circuit. The light and beeper should go on as if a live wire is being.
275HP is sealed by “0” rings. 240Vac, 2KV, 6KV, 11KV, 22KV, 33KV, 132KV and 275KV 8 Voltage Settings. Alternate Voltage Setting available:
Off/Test/240Vac/3.3KV/11KV/22KV/33KV/66KV/110KV/ 220KV/330KV/500KV.(500HP). High bright LEDs visual indication. Sound indication. Easy to prove method. Self-test selection. Use 3 x 1.5V “C” batteries. High impact nylon casing. Non-contact work by proximity. Compatible with most link sticks. Light weight, robust, & compact. Suitable for indoor and outdoor use. Detect low voltage on any systems. Easy access to batteries. No special parts needed. Simple and efficient to use. It is recommended that the 275HP / 500HP is not used in HV yards of mixed voltages. In the presence of mixed voltages, the tester can become unreliable. Problems can arise when the tertiary circuit of a 275/133/11KV transformer is tested. The electric field of the HV and MV bus bars can trigger the detector when it is about 3m above the ground. This is common with most of the electric field voltage detectors, and the users should be aware of it. The tester can pick up adjacent circuit to the one being tested and indicate the wrong information to the user.
For further information, visit: www.kusam-meco.co.in
