If nuisance tripping on a circuit is a problem this function can be used to retest the RCD
with other appliances systematically connected and removed.
For example a 30mA RCD may trip at 12mA on ramp test with an appliance connected
and then at 27mA with the appliance removed. You will know that the appliance is
leaking approximately 15mA.
Phase Rotation
Principle of Measurement
During phase rotation measurement the amplitudes and phase angles of the three
inputs L1 L2 L3 are checked against limits, allowing for mild unbalance conditions. The
indication 1-2-3 is displayed for normal rotation (L2 lags L1) and 3-2-1 for reverse
rotation (L2 leads L1).
Display of Phase rotation is Automatic when all three tests leads are connected to the 3
phase supply as below:
Set the main rotary switch phase
Using three test leads, connect test leads to the L1 to Phase 1, L2 to Phase 2 and L3 to
Phase
The Socket & See MFT5000 will display .1 .2 .3 or .1 .3 .2 depending on the direction of
phase rotation.
Warning
Only use LR6 Alkaline replacement batteries.
Please dispose of your batteries carefully.
Batteries are made from important resources and chemicals, including lead, cadmium,
zinc, lithium and mercury. If batteries are disposed of as normal waste, they'll be taken
to a landfill site and those resources will be lost and will contribute to the pollution of
the environment. Recycling is one way you can help the environment and you should
dispose of used batteries separately from other waste, using local collection
and recycling schemes available.
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