Electrical Installation Tester
Accuracy Tests
31
RCD Trip Time
Warning
To prevent possible electrical shock, fire, or personal injury, do
not touch the L or N input jacks while performing the following
tests. These input jacks have line voltage on them during the
test.
To test the RCD Trip Time Accuracy, perform the following procedure for each step in
Table 8.
1. Connect the UUT’s L, PE, and N to the 5320A as shown in Figure 9.
2. Turn the UUT on and set the rotary switch to the ∆T function.
3. On the UUT, set <, , to the values shown in Table 8.
4. On the 5320A, press and use the MODE softkey and Cursor keys to select
Trip Time.
5. Press the 5320A softkeys to select Trip I and I Mult.
6. Using the cursor keys, modify the Trip I and I Mult. to the same value as the UUT <
and setting.
7. Put the 5320A in and wait to settle.
8. Press the UUT .
9. Compare the UUT measured trip time to the Accuracy limits in Table 8.
Table 8. RCD Trip Time Accuracy Tests
UUT Settings
Trip Time
Accuracy
Step
UUT
Function
5320A RCD
Trip Time
<
Spec
Lo Limit Hi Limit
1 30 ms 30 mA x1 AC 1 % + 1 28.7 31.3
2 300 ms 30 mA x1 AC 1 % + 1 296.0 304.0
3
∆T
500 ms 30 mA x1 AC S 1 % + 1 494.0 506.0
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