Is this meter a Test Instrument? If so then read the user instructions. My Fluke voltage indicator tripped RCD's for fun till i read the instructions, and now it never trips them.
If its your supply meter you really need to contact you supplier as if its a loose connection its only a matter of time before it heats up it needs sorting ASAP.
Get them back before you start cutting seals etc(as it would of been resealed on replacment) or they will point the finger at you for tampering
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