KYORITSU 6050 - Manual (Page 24)

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6.2 RCD Testing
6.2.1 Preparation
(1) Turn Function switch and power on the instrument. Select RCD.
(2) Press RCD Function switch to select RCD Function for test.
Selected function will be displayed on LCD.
(3) Press the "I⊿n / LOOP / PSC" SELECT SWITCH to set the Rated
Tripping Current (I⊿n) to the rated trip current of the RCD. Every
time "I⊿n / LOOP / PSC" SELECT SWITCH is pressed, ▼ mark on
LCD shifts. Select I⊿n with above switch.
(4) Press the UL value select switch to select switch UL value (25 or
50V).
6.2.2 Wiring Check
(1) Insert the Test Lead into the instrument. (Fig.15)
(2) Connect test lead to object to be tested. (Fig.16,17)
(3) Make sure that the P-E and P-N wiring Check LEDs are lit and the
wiring in correct LED is not lit. If it is not correct, disconnect the
tester and check the wiring for a possible fault.
For testing RCD's to verify that
they are not too sensitive.
For measuring the trip time.
For testing at I⊿n ×5.
For testing DC sensitive RCD's.
For measuring the trip out current.
Ч 1/2
Ч 1
Ч 5
DC
AUTO RAMP TEST( )
RCD Function
I⊿n
0°/180°
UL
× 1/2
30mA
0°
50V
The Initial value