Technical data
82
isoxx1685Dx-x25_D00272_07_M_XXEN/09.2022
Voltage ranges
Nominal system voltage range U
n
iso1685DP...................................................................... AC 0…1000 V; DC 0…1500 V
Nominal system voltage range U
n
isoHV1685D................................................................... AC 0…2000 V; DC 0…3000 V
Nominal system voltage range U
n
isoLR1685DP....................................................................... AC 0…690 V; DC 0…690 V
Tolerance of U
n
........................................................................................................................................... AC +10 %/DC +5%
Frequency range of U
n
..................................................................................................................................... DC 0.1…460 Hz
Supply voltage U
s
(see also device nameplate) ..................................................................................................... DC 18...30 V
Frequency range of U
s
................................................................................................................................... ................... ...... DC
Power consumption ......................................................................................................................................................... ≤ 9 W
Measuring circuit for insulation monitoring
Measuring voltage U
m
(peak value) ................................................................................................................................. ±50 V
Measuring current I
m
(at R
F
= 0 Ω) ............................................................................................................................ ≤ 0.7 mA
Measuring current I
m
isoLR1685DP (at R
F
= 0 Ω)...................................................................................................... ≤ 3.5 mA
Internal DC resistance R
i
iso1685DP............................................................................................................................. ≥ 70 kΩ
Internal DC resistance R
i
isoHV1685D (two-pole coupling)...................................................................................... ≥ 210 kΩ
Internal DC resistance R
i
isoHV1685D (single-pole coupling) .................................................................................. ≥ 420 kΩ
Internal DC resistance R
i
isoLR1685DP..................................................................................................................... ≥ 15 kΩ *
1
Impedance Z
i
at 50 Hz iso1685DP................................................................................................................................ ≥ 70 kΩ
Impedance Z
i
at 50 Hz isoHV1685D (two-pole coupling) ........................................................................................ ≥ 210 kΩ
Impedance Z
i
at 50 Hz isoHV1685D (single-pole coupling)..................................................................................... ≥ 420 kΩ
Impedance Z
i
at 50 Hz isoLR1685DP........................................................................................................................ ≥ 15 kΩ *
1
Permissible extraneous DC voltage U
fg
.................................................................................................................. ≤ DC 1600 V
Permissible extraneous DC voltage U
fg
isoHV1685D............................................................................................. ≤ DC 3150 V
Permissible extraneous DC voltage U
fg
isoLR1685DP ............................................................................................. ≤ DC 720 V
Permissible system leakage capacitance C
e
.......................................................................... profile-dependent, 0…2000 µF
Response values for insulation monitoring
Response value R
an1
(Alarm 1) and R
an2
(Alarm 2)........................................................................................... 200 Ω…1 MΩ
Response value R
an1
(Alarm 1) and R
an2
(Alarm 2) isoLR1685DP ................................................................... 20 Ω…100 kΩ
Condition response value ......................................................................................................................................... R
an1
≥ R
an2
Upper limit of the measuring range for setting for measurement profile "Fast" C
emax
= 2000 µF (isoxx1685DP only) 50 kΩ
Upper limit of the measuring range for setting for measurement profile "High capacity" C
emax
= 500 µF ................ 200 kΩ
Relative uncertainty iso 1685DP
(10 kΩ…1 MΩ) (acc. to IEC 61557-8)........................................................................................................................... ±15 %
(0.2 kΩ…< 10 kΩ) ......................................................................................................................................... ±200 Ω
±15 %
Relative uncertainty isoHV1685D
(10 kΩ…1 MΩ) (acc. to IEC 61557-8)........................................................................................................................... ±15 %
(0.2 kΩ…< 10 kΩ) ........................................................................................................................................... ±1 kΩ
±15 %
Relative uncertainty isoLR1685DP
(1 kΩ…100 kΩ) (acc. to IEC 61557-8)........................................................................................................................... ±15 %
(20 Ω…< 1 kΩ) ...............................................................................................................................................
±20 Ω ±15 %
Hysteresis............................................................................................................................................................................. 25 %
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