User manual

30 GMC-I Messtechnik GmbH
Displays
Digital display Multiple display with dot matrix
128 x 128 pixels, backlit (transflective),
dimensions: 65 x 65 mm
Limit LED LED lights up red to indicate an exceeded
limit value.
LED lights up green to indicate adherence
to the limit value.
LED LED lights up red to indicate the presence
of an external voltage (with the instrument
switched off)
or high test voltage during insulation mea-
surement (Riso/Rins, PI and DAR) at the
measuring terminals
Uramp LED LED lights up green to indicate ramp
sequence in progress.
LED lights up red to indicate interrupted
ramp sequence (e.g. in case of break-
down).
Ambient Conditions
Accuracy temperature
range 0 ... +40 °C
Operating temperature –10 ... +50 °C
Storage temp. range –25 ... +70 °C (without batteries)
Relative humidity Up to 75% (max. 85% during storage/
transport), no condensation allowed
Elevation Max. 2000 m
Calibration interval 1 year (recommended)
Mechanical Design
Dimensions 225 x 130 x 140 mm
Weight Approx. 1.4 kg with batteries
Protection Housing: IP 52, measurement cables and
connectors: IP 40 per DIN VDE 0470, part
1 / EN 60529, housing category 2
Excerpt from Table on the Meaning of IP Codes
Display Values in Consideration of Measuring Uncertainty
Table for determining minimum display values for insulation resistance in
consideration of the instrument’s measuring uncertainty.
Table for determining maximum display values for low-value resistance in
consideration of the instrument’s measuring uncertainty.
Voltage at Device Under Test During Insulation Resistance
Measurement
Measuring voltage Ux at the device under test depending upon its
resistance Rx at nominal voltages of 100, 250, 500 and 1000 V:
IP XY
(1
st
digit X)
Protection Against Foreign
Object Entry
IP XY
(2
nd
digit Y)
Protection Against
Penetration by Water
2 ≥ 12.5 mm dia. 2 Dripping (at 15° angle)
3 ≥ 2.5 mm dia. 3 Spraying water
4 ≥ 1.0 mm dia. 4 Splashing water
5 Dust protected 5 Jet-water
6 Dust-proof 6 Powerful water jets
Limit Value
Minimum
Display Value
Limit Value
Minimum
Display Value
020 kΩ 025 kΩ
100 kΩ 111 kΩ 100 MΩ 111 MΩ
200 kΩ 219 kΩ 200 MΩ 219 MΩ
500 kΩ 541 kΩ 500 MΩ 541 MΩ
0.20 MΩ 0.25 MΩ
0.50 MΩ 0.57 MΩ
1.00 MΩ 1.11 MΩ 1.00 GΩ 1.11 GΩ
2.00 MΩ 2.19 MΩ 2.00 GΩ 2.19 GΩ
5.00 MΩ 5.41 MΩ 5.00 GΩ 5.41 GΩ
10.0 MΩ 11.1 MΩ 10.0 GΩ 11.1GΩ
20.0 MΩ 21.9 MΩ 20.0 GΩ 22.6 GΩ
50.0 MΩ 54.1 M
Ω 50.0 GΩ 55.9 GΩ
!
Limit Value
Maximum
Display Value
Limit Value
Maximum
Display Value
0.15 Ω 0.11 Ω
0.20 Ω 0.16 Ω 5.00 Ω 4.72 Ω
0.50 Ω 0.44 Ω 10.0 Ω 9.47 Ω
1.00 Ω 0.92 Ω 20.0 Ω 17.7 Ω
2.00 Ω 1.87 Ω 50.0 Ω 44.7 Ω
100
U
x
/V
R
x
/kΩ
U
N
= 100 V
0
20
40
60
80
100
250
U
x
/V
R
x
/kΩ
U
N
= 250V
0
50
100
150
200
250
0
100
200
300
400
500
500
U
N
= 500V
U
x
/V
R
x
/kΩ
0
200
400
600
800
1000
1
U
N
= 1000V
U
x
/V
R
x
/MΩ