Vanguard RFD-200 S3 - Manual (Page 15)

REV 1 RFD-200 S3 USER’S MANUAL
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3.2 Setting the RFD-200 S3 for a Time Delay Test
Use the steps below to measure an over-current relay time delay:
a. Connect the RFD-200 S3 current source output across the relay coil as shown in Figure 2.
b. Select INTERNAL for the
[TIMER START]
input by pressing the
[LEFT ARROW]
key
in the TIMER START section until the [INTERNAL] LED light is illuminated. When the
RFD-200 S3 is first turned on, this mode will be selected by default.
c. Connect the [TIMER STOP] input across the relay dry contact output as shown in
Figure 2.
d. Select DRY for the [TIMER STOP] input by pressing the [LEFT ARROW] key in the
TIMER STOP section until the
[DRY]
LED light is illuminated. When the unit is first
turned on, this mode will be selected by default.
e. Set the test current (see section 3.1).
f. Turn off the current source by selecting OFF from the control mode area.