MARTINDALE VERITEST 2240, Быстрый старт

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5
3. M
Ω
INSULATION TEST
1) Connect the red and black test leads to P + N terminals respectively
2) Turn dial to M
Ω
(insulation resistance). Display shows 'Riso' at top left.
3) Select 'MAN', 'AUTO' or 'TIMER' mode by repeatedly pressing the
key. See below for details of individual tests.
4) Press repeatedly to select the voltage suitable for the test being
carried out. 50V, 100V, 250V, 500V, 1000V.
5) Connect the test leads to the conductor on which the insulation test is to
be carried out.
6) Press yellow key. The instrument performs the test as stated below.
At the end of the test, the instrument beeps twice indicating a successful
measurement. The resistance is displayed on the screen.
If the insulation is very low value the tester emits a long single beep to indicate
that the test voltage fell below the set rated voltage and the measurement was
unsuccessful.
See technical specification.
MAN: Minimum test time of 5 or 10 seconds depending on test voltage and
insulation resistance. See table below. If “Go” is pressed and held for
longer than 10 seconds, the instrument continues to measure until the
“Go” key is released.
AUTO: The test ends when the measured value becomes stable.
TIMER: Test duration can be adjusted from 10-999 seconds. Adjust values
using or This test can be used if a minimum
measuring time is required.
U
N
/I Δ n
FUNC
L
S U
L
M
GO
100V 250V 500V 1000V
Low resistance 5 seconds 10 seconds 10 seconds 10 seconds
High resistance 5 seconds 5 seconds 5 seconds 5 seconds
Open circuit voltage: Rated voltage test -0% +10%
Short circuit current: <3,0mA @ 500V
<2,0mA @ 50V, 100V, 250V, 1000V
Test current on load: >1mA @ V
Test
across R
load
=(1000 x V
Test
)
Ω
If the instrument measures a voltage higher than 30V, the instrument does not
perform the test
RCD
Type of RCD: AC, A
Range of phase to earth voltage: (100 - 265) V
Rated Tripping Current (I
ΔΔ
N): 10mA, 30mA, 100mA, 300mA, 500mA
Test frequency: 50Hz ± 0.5 Hz
TRIPPING TIMES
Test Range Resolution Accuracy
½ I
Δ
N
, I
Δ
N
0-999ms 1ms ±(2%rdg+2dgt)
2 I
Δ
N
0-200ms general 1ms ±(2%rdg+2dgt)
0-250ms selective 1ms ±(2%rdg+2dgt)
5 I
Δ
N
RCD(*) 0-50ms general 1ms ±(2%rdg+2dgt)
0-160ms selective 1ms ±(2%rdg+2dgt)
(*) For RCD type A 500mA, the MAN x5 and AUTO tests are not available.
The Ramp test measures tripping current
CONTACT VOLTAGE
Measuring range(V)
Resolution(V) Accuracy
0 - 2Ut Lim 0.1 -0%,+(10%rdg+2dgt)
Ut Lim (UL): 25V or 50V
TRIPPING CURRENT FOR RCD TYPE A AND AC
RCD with I
Δ
N
≤ 10mA
Type RCD Range I
Δ
N(mA)
Resolution(mA) Accuracy I
Δ
N
AC (0.5 - 1.4) I
Δ
N
0.1 I
Δ
N
-0%, +10% I
Δ
N
A (0.5 - 2.4) I
Δ
N
RCD with I
Δ
N
≥
10mA
Type RCD Range I
Δ
N(mA)
Resolution(mA) Accuracy I
Δ
N
AC (0.5 - 1.4) I
Δ
N
0.1 I
Δ
N
-0%, +10% I
Δ
N
A (0.5 - 2) I
Δ
N
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