The Megger BM21 is a portable, battery powered 5 kV high voltage Insulation Resistance Tester.
The BM21 shows results and test options on a large, clear analog/digital scale for both practicality and precision. A built-in timer makes both spot tests and PI testing easier to carry out.
The BM21 is 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 unit switch a variable test voltage in 25 V steps.
These top of the range units also allow measurement of resistance to 5 TΩ,leakage current to 0.01 nA and can display capacitance at the end of a test to 10 µF.
Features
Spot Tests and Diagnostic insulation tests Simplicity and Ease of Use User safety features Unique rugged casing Analog and Analog/Digital Displays Wide range of test voltages Automated Testing (BM25 Only)
■ Choice of test voltages ■ Direct reading display ■ Unique rugged case ■ Guard terminal ■ Designed for user safety ■Large, custom Analogue/Digital LCD ■ Built-in timer ■ Locking test leads for safety ■ Battery indicator ■ Automatic discharge of capacitance ■ Voltage measurement and warning ■ Tests to 500 GΩ ■ Weather proof to IP54 ■ Variable test voltage in 25 V steps ■ Breakdown or ‘Burn’ modes allow choice of diagnostic approach ■ Shows capacitance at end of test ■ Timer sets test duration for easier test control ■ Tests to 5,000 GΩ ■ Leakage current mode ■ Automated testing for increased productivity ■ Polarization Index and Step Voltage tests ■ Dielectric Discharge test for multi-layer insulation ■ Optically isolated RS232 port for real-time download ■ Variable test duration controlled by timer ■ Variable test voltage in 25 V steps to 5000 V ■ Leakage current and capacitance measurement ■ Breakdown or Burn modes ■ Tests to 5,000 GΩ
Megger BM21 5 kV Insulation Resistance Tester and other Insulation Resistance Testers for sale at Test Equipment Center.
Megger BM21 products for sale at Test Equipment Center are thoroughly tested, and receive electrical and cosmetic reconditioning as needed prior to sale. All products include a 90 day warranty from Test Equipment Center to ensure your complete satisfaction.
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Analog / Digital Display 
