Bender ISOMETER isoUG425 Kurzanleitung Seite 34

IT system being monitored
Nominal system voltage
Tolerance of ........................................................................................................................................................ 20%
n
Measuring circuit
Internal resistance .........................................................................................................................................≥ 115 kΩ
i
Permissible leakage capacitance
Response values
Response value ...................................................................................................................... 2...100 kΩ (50 kΩ)*
an1
Response value ........................................................................................................................ 1...95 kΩ (25 kΩ)*
an2
Operating uncertainty
Hysteresis .................................................................................................................................... 25 %, at least 1 kΩ
an
Undervoltage detection
Overvoltage detection
Operating uncertainty
Hysteresis ....................................................................................................................................... 5 %, at least 1 V
DC
Time response
Response time at = 0.5 x
an F
Start-up delay ..................................................................................................................................... 0...10 s (0 s)*
Response delay ................................................................................................................................ 0...99 s (0 s)*
on
Delay on release ............................................................................................................................... 0...99 s (0 s)*
off
Displays, memory
Display..................................................................................................... LC display, multi-functional, not illuminated
Display range measured value insulation resistance (
Operating uncertainty............................................................................................................... ± 15 %, at least ±2 kΩ
Display range measured value nominal system voltage (
Operating uncertainty
Operating uncertainty
Password....................................................................................................................................... off/0...999 (0, off)*
Fault memory alarm message........................................................................................................................ on / (off)*
Interface
34
................................................................................................................... DC 12...120 V
n
................................................................................................................... ≤ 50 μF
e
......................................................................................................... ± 15 %, at least ±2 kΩ
an
................................................................................................................ 8...143 V (off)*
DC
................................................................................................................ 8.1...144 V (off)*
DC
........................................................................................................ ± 5 %, at least ± 0.5 V
DC
and =1 μF acc. to IEC 61557-8 ................................................................ ≤ 1 s
an e
........................................................................................................ ± 5 %, at least ± 0.5 V
DC
..................................................................................................... ± 5 %, at least ± 1.5 V
RMS
)........................................................................ 1 kΩ...1 MΩ
F
)....... 0...150 V (
n
isoUG425_D00220_02_Q_DEEN / 05.2018
=∞ : 300 V ; = 0 kΩ : 150 V
F P F
)
P