- 3 -
2) Time relay: Measure start value, return value and action time, error less than
0.2ms
3) Intermediate relay: Measure start value, return value, holding value and action
time of coil 4)
4) Reclosing relay: Charge test of capacitance, charge time, reclosing time and
middle components test.
5) Differential relay: DC Excitation test, Braking test, Volt-ampere characteristic test.
6) Other unconventional relays and LV circuit breakers.
Ⅲ、
Panel layout diagram and function
Panel layout diagram
：
1
Function description
1) J1
、
J2
、
J3
、
J4
、
J5 are respectively AC, DC power source and setting value output
terminal, as it shows in the panel
2) X1 indicates current voltage value ( display starting value, return value and rated
value), X2 is Millisecond Meter
3) S1 is power supply socket, S2 is power switch
4) T1: Power source output Selecting knob T2: Setting value output selecting knob
T3: contact state selecting knob (
means the lamp can be used to judge the