MEGGER BM21 5 KV Insulation Tester
Weekly Hire Cost From: £75.00
The Megger BM11D series of 5 kV Insulation Testers provides a choice of features to suit all applications and budgets. The traditional BM11 instrument became the industry-standard 5 Kv tester. It is battery powered, housed in a rugged case and has a large, simple white-on-black scale. The series has been extended with three analogue/digital instruments; the BM11D, BM21 and BM25.
These instruments show results and test options on a large, clear analogue/digital scale for both practicality and precision. A built-in timer makes both spot tests and PI testing easier to carry out. They are powered by a built-in rechargeable lead-acid battery which can be charged directly from any supply from 95 V to 265 V. All testers incorporate a guard terminal to allow surface leakage to be removed. Pre-set standard test voltages at 500 V, 1000 V, 2500 V and 5000 V are supplemented on the BM21 and BM25 units with a variable test voltage in 25 V steps.
These top of the range units also allow measurement of resistance to 5 T?, leakage current to 0,01 nA and can display capacitance at the end of a test to 10 ?F. The BM25 extends the diagnostic testing capability of the range by performing automatic Polarisation Index, Step Voltage and Dielectric Discharge tests as well as providing an optically isolated RS232 port for downloading results during a test.