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indicates relay with contact opening as operation value
Relay operation value, return value and return factor measurement:
Regulate output power according to point 4, select T3 to ,push
synchronous switch, rotate slowly T4 Knob to relay operation, when indicator
light is from off to on state, the current X1 is displayed as operation value.
Continue to regulate T4 to relay rated value, then turn T4 to relay return, when
the indicator light turns off, the X1 value is return value. Return value divided by
operation value then multiply by 100% to get return factor.
Relay time measurement
Regulate output power according to point 4, turn T3 to relay contact state,
push synchronous switch, rotate slowly T4 Knob to relay rated value. Relay time
can be tested via synchronous switch ( display value of 2). Note that the
Millisecond meter should be zero cleared and reclosing switch should be on
before the measurement.
synchronous switch and contact state relationship as following:
ⅠⅢ
state, synchronous switch from off to on
ⅡⅣ
state, synchronous switch from on to off
Contact wiring as following
：
3. Time relay measurement method is same as above