33
second delay (Selective type only) then execute a Trip test.
General purpose Test I
∆n
test for up to 300 ms
Selective Test I
∆n
test for up to 2000 ms
Note:- The 30 second delay between the automatic
1
⁄2I
∆n
test and
the I
∆n
test proper can be curtailed by operating the TEST key
during the 30 second count period.
D.C. Sensitive Trip (For RCDs up to 300 mA)
This test is the same as the I
∆n
Trip Test above, but the test
current is a half wave rectified a.c. with an r.m.s. value of
√2I
∆n.
5I
∆n
Trip Test (for RCDs up to 100 mA)
This test follows the same sequence of
1
⁄2I
∆n
test, 30 second
delay (Selective type only) as the I
∆n
test. The same note
applies.
General purpose test 5I
∆n
test for up to 40 ms
Selective test 5I
∆n
test for up to 150 ms
Timed Trip Tests
Trip time displayed Range 0,1 ms to test time limit
Intrinsic Trip time accuracy ± 1% ± 1 ms
Intrinsic Test Current accuracy +2% / +8%
Ramp Test (Trip current measurement)
This test will perform an automatic
1
⁄2I
∆n
test followed by a 30
second delay (Selective type RCD only) and then execute an
incremental ramp test.
Intrinsic Test Current accuracy ±3%
150 mA 40 ms Trip Test
This is a stand alone test at 150 mA for 40 ms
Displayed Range 0,1 ms to 40 ms
There is no associated
1
⁄2I
∆n
test or Delay.
POWER SUPPLY
8 x 1,5 V Alkaline cells type LR6 or 1,5 V nickel cadmium
rechargeable cells.
A new set of alkaline battery cells will typically give more than
4500 insulation or 3250 continuity tests. A mains supply is also
required to carry out RCD, Loop and Earth tests.
FUSES
Replaceable 500mA (F) 500V HBC 10kA
Non replaceable 2 x 7A (SIBA 70-065-63)
The 500 mA fuse is accessible from the battery compartment and
protects the Insulation and Continuity circuits.The 7 A fuses
protect the instrument and are not
replaceable by the user.
Ruptured fuses are indicated by the display of the symbol
when a test is attempted.
I
∆n
10
30
100
300
500
1000
RAMP RANGE
5 - 15 mA
15 - 50 mA
50 - 150 mA
150 - 300 mA
250 - 500 mA
500 - 1020 mA
INCREMENT
1 mA
1 mA
2 mA
6 mA
10 mA
52 mA
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