Megger BM5200 5kV Insulation Resistance Tester

Description

Key Features:

• 1 T Ω, 1.4 mA, 5 kV digital insulation tester with digital and analog display
• Five test ranges; 250 V, 500 V, 1000 V, 2500 V, and 5000 V
• Insulation (InS), Polarisation Index (PI), and variable timed test (t) modes
• Selectable DC or AC (including frequency) voltmeter functions
• Guard terminal to shunt surface leakage currents
• CAT III 600 V safety rating

The unit performs DC insulation tests at 250 V, 500 V, 1000 V, 2500 V, and 5000 V. It’s insulation resistance measuring range is 100 k Ω to 1000 G Ω. It also provides an automatic discharge for capacitive circuits under test as well as displaying the decaying voltage.

The BM5200 comes with a guard terminal that can minimize the effects of surface leakage and hence erroneous measurements when carrying out insulation resistance tests.

Three insulation resistance (IR) test modes are provided (InS, PI, and t) and available in any IR test range. In insulation (InS) mode, tests are initiated by pressing and holding down the “TEST” button for two seconds and terminated by a second press of the “TEST” button. The Polarisation Index (PI) mode performs a ratio metric test that calculates the ratio of insulation resistance at ten minutes to insulation resistance at one minute. The IR test timer (t) mode facilitates a single fixed time test based on the fixed time interval ‘t’.

For capacitive test objects, the instrument will automatically discharge through an internal resistor and indicate voltage across the terminals in the range of 25 V to 600 V with higher voltages indicated by “>600 V”. This feature will give decaying voltage indication following the testing of reactive loads. When the voltage indicator disappears, it is safe for the user to disconnect the test leads. The instrument’s safety features include a high voltage warning indicator, an external voltage display after the IR test, automatic discharge of reactive loads, and test leads.