Technical data
59
isoPV425_D00028_09_M_XXEN/05.2018
IT system being monitored
Nominal system voltage U
n
with AGH420 ..................................................... 3(N)AC, AC 0…690 V/DC 0…1000 V
Tolerance of U
n
............................................................................................................................... AC +5 %, DC +0 %
Nominal system voltage range U
n
with AGH420 (UL508) ................................................................AC/DC 0…600 V
Frequency range of U
n
........................................................................................................................ DC, 15…460 Hz
Measuring circuit
Permissible system leakage capacitance C
e
at insulation value ≤ 300 kΩ.................................................. ≤ 1000 F
Permissible system leakage capacitance C
e
at insulation value ≥ 300 kΩ ................................................... ≤ 500 F
Permissible extraneous DC voltage U
fg
.......................................................................................................... ≤ 1150 V
Response values
Response value R
an1
..................................................................................................................... 2…500 kΩ (10 kΩ)*
Response value R
an2
....................................................................................................................... 1…490 kΩ (5 kΩ)*
Relative uncertainty R
an
............................................................................................................. ±15 %, at least ±1 kΩ
Hysteresis R
an
................................................................................................................................... 25%, at least 1 kΩ
Undervoltage detection ................................................................................................................. 30…1.14 kV (off)*
Overvoltage detection .....................................................................................................................31…1.15 kV (off)*
Relative uncertainty U.................................................................................................................... ±5 %, at least ±5 V
Relative uncertainty depending on the frequency
≥
200 Hz...................................................................... -0.03 %/Hz
Hysteresis U .......................................................................................................................................... 5 %, at least 5 V
Time response
Response time t
an
at R
F
= 0.5 x R
an
and C
e
=1 F acc. to IEC 61557-8 ............................................................. ≤ 10 s
Start-up delay t ...................................................................................................................................... 0…10 s (0 s)*
Response delay t
on
................................................................................................................................. 0…99 s (0 s)*
Delay on release t
off
............................................................................................................................... 0…99 s (0 s)*
Displays, memory
Display..................................................................................................... LC display, multi-functional, not illuminated
Display range measured value insulation resistance (R
F
) ........................................................................ 1 kΩ…1 MΩ
Operating uncertainty at R
F
≤ 1 MΩ......................................................................................... ±15 %, at least ±1 kΩ
Display range measured value nominal system voltage (U
n
) .......................................................... 30…1.15 kV
RMS
Operating uncertainty.................................................................................................................... ±5 %, at least ±5 V
Relative uncertainty depending on the frequency
≥
200 Hz...................................................................... -0.03 %/Hz
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