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4. Preparations for use (all instruments)
4.1 Batteries
The Megger MIT400/2 series instruments are supplied with batteries fitted. When batteries become exhausted, refer to section 15 for
battery replacement.
Warning: Do not switch the instrument on or connect test leads with the battery cover removed.
4.2 Preliminary test lead check
Functional verification
1. Before each use of the instrument visually inspect the test leads, prods and crocodile clips to confirm that their condition is
good, with no damaged or broken insulation.
2. Check continuity of the test leads by firmly shorting the leads together and read the test lead resistance measurement directly
from the display, which should be less than 1.0 W.
Note: Supply voltage
This instrument is designed for use on isolated (dead) circuits. Prior to any testing and using an approved method, ensure the circuit to
be tested has been fully disconnected and is securely isolated from the supply prior to using the instrument.