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A-ISOMETER® iso-F1 (IR155)
Technische Daten
Isolationskoordination nach IEC 60664-1
Bemessungsspannung ............................................................................................................ 800 V
Bemessungsstoßspannung / Verschmutzungsgrad ........................................................... 6 kV / II
Sichere Trennung (verstärkte Isolierung) zwischen..........................................................................
................................................................................ (L+,L-) – (M+,M-, A+, A-, OK+, OK-, E, KE)
Spannungsprüfung............................................................................................................ DC 3,5 kV
Versorgungsspannung / Überwachtes IT-System
Netznennspannung U
................................................................................................DC 0...800 V
n
Versorgungsspannung U
.............................................................................................DC 9...18 V
S
Eigenverbrauch.................................................................................................................... ≤ 1,5 W
Ansprechwerte
Ansprechwert R
/ Z
(Alarmanzeige: OK-, OK+) ............................................................. 100 kΩ
an
an
Relativer Messfehler ............................................................................. ±15 % (100 kΩ...10 MΩ)
Hysterese.................................................................................................................................... 25 %
Messbereich
Isolationswiderstand R
(DCP) .................................................................................. 0 kΩ...50 MΩ
F
Isolationsimpedanz Z
bei 2 Hz (PCP)....................................................................... 0 kΩ...50 MΩ
F
Relativer Messfehler ............................................................................. ±15 % (100 kΩ...10 MΩ)
Zeitverhalten
Ansprechzeit t
bei R
= 100 kΩ, C
= 1 μF, U
an
F
e
Ansprechzeit t
bei Z
= 100 kΩ, C
= 100 nF, U
an
F
e
Messkreis
Messspannung U
................................................................................................................. ±40 V
m
Messstrom I
....................................................................................................................... ≤ 40 μA
m
Innenwiderstand DC R
.................................................................................................... ≥ 1000 kΩ
i
Netzableitkapazität C
(DCP).................................................................................................. ≤ 1 μF
e
Netzableitkapazität C
(PCP)............................................................................................. ≤ 100 nF
e
Impedanz Z
bei 50 Hz ..................................................................................................... ≥ 1000 kΩ
i
Funktion
Alarm- und Gerätefehlermeldungen:
E / KE-Anschlüsse unterbrochen ........................................................................... M+ / M- = 0 %
Spannungsausfall .................................................................................................. M+ / M- = 0 %
Geräteausfall (Selbsttest) ...................................................................................... M+ / M- = 0 %
Messungen 30 s lang nicht aktualisiert ............................................................ M+ / M- = 100 %
Status-LED:
Leuchtet konstant ............................................................................................... Interner Selbsttest
Blinkt mit 1 Hz ...................................................... Gesamtsystem in ordnungsgemäßem Zustand
Blinkt mit 2 Hz ............................................................................... Isolationswiderstand < 100 kΩ
Blinkt mit 4 Hz ........................................................................ Gerätefehler, Anschlussfehler E / KE
Ausgang
Schnittstelle OK+, OK -................................................................................................. Optokoppler
Arbeitsweise ..................................................................................................... Ruhestromverhalten
Ausgang Status:
niederohmig ......................................................................................................... kein Gerätefehler
hochohmig ............................................................................ Gerätefehler / Alarm Isolationsfehler
Schaltspannung......................................................................................................................≤ 30 V
Schaltstrom........................................................................................................................... ≤ 5 mA
Schaltwiderstand R
.............................hochohmig >100 kΩ (120 °C), > 10 MΩ (25 °C)
OK+ / OK-
.............................................................................niederohmig < 200 Ω (120 °C), < 100 Ω (25 °C)
Schnittstellen M+, M- ................................................................................................. Optokoppler
Funktion.............................................................................................. Messwert über PWM-Signal,
Arbeitsweise ....................................................................................Tastverhältnis 5 % = > 50 MΩ
......................................................................................................... Tastverhältnis 50 % = 1200 kΩ
............................................................................................................... Tastverhältnis 95 % = 0 kΩ
..............................................................................Tastverhältnis 0 % = Gerätefehler (OK- / OK+)
...........................................................................Tastverhältnis 100 % = Gerätefehler (OK- / OK+)
............................................................................R
............................................................................Z
...............................................................................................dc % = Tastverhältnis (5 %...95 %)
Grundfrequenz PWM...............................................................................................................225 Hz
6
stabil (DCP).............................................. ≤ 20 s
n
stabil (PCP).......................................... ≤ 20 s
n
= (90 % * 1200 kΩ) / (dc % - 5 %) - 1200 kΩ
F
= (90 % * 1200 kΩ) / (dc % - 5 %) - 1200 kΩ
F
Technical data
Insulation coordination acc. to IEC 60664-1
Rated insulation voltage............................................................................................................800 V
Rated impulse voltage/pollution degree...............................................................................6 kV / II
Protective separation (reinforced insulation) between ....................................................................
................................................................................ (L+,L-) – (M+,M-, A+, A-, OK+, OK-, E, KE)
Voltage test......................................................................................................................... DC 3.5 kV
Supply voltage / IT system being monitored
Nominal system voltage U
........................................................................................ DC 0...800 V
n
Supply voltage U
......................................................................................................... DC 9...18 V
S
Power consumption .............................................................................................................≤ 1.5 W
Response values
Response value R
/ Z
(alarm indication: OK-, OK+)........................................................100 kΩ
an
an
Relative uncertainty of measurement..........................................+ / - ±15 % (100 kΩ...10 MΩ)
Hysteresis.................................................................................................................................... 25%
Measuring range
Insulation resistance R
(DCP)....................................................................................0 kΩ...50 MΩ
F
Insulation impedance Z
at 2 Hz (PCP)......................................................................0 kΩ...50 MΩ
F
Relative uncertainty of measurement..........................................+ / - ±15 % (100 kΩ...10 MΩ)
Specified time
Response time t
at R
= 100 kΩ, C
= 1 μF, U
an
F
e
Response time t
at Z
= 100 kΩ, C
= 100 nF, U
an
F
e
Measuring circuit
Measuring voltage U
........................................................................................................... ±40 V
m
Measuring current I
...........................................................................................................≤ 40 μA
m
Internal DC resistance R
...................................................................................................≥ 1000 kΩ
i
System leakage capacitance C
(DCP) ....................................................................................≤ 1 μF
e
System leakage capacitance C
(PCP).................................................................................≤ 100 nF
e
Impedance Z
at 50 Hz......................................................................................................≥ 1000 kΩ
i
Function
Alarm messages and device error messages:
E / KE connections interrupted............................................................................... M+ / M- = 0 %
Power supply failure............................................................................................... M+ / M- = 0 %
Device failure (self test) ......................................................................................... M+ / M- = 0 %
No measurement updates for 30 s..................................................................... M+ / M- = 100 %
Status LED:
Lights continuously ................................................................................................ internal self test
Flashes at 1 Hz ............................................................................ entire system in proper condition
Flashes at 2 Hz ................................................................................ insulation resistance < 100 kΩ
Flashes at 4 Hz ........................................................................ device error, connection error E / KE
Output
Interface OK+, OK -........................................................................................................Optocoupler
Operating principle...................................................................................................... N/C operation
Output status:
low-resistance ........................................................................................................... no device error
high-resistance........................................................................ device error / alarm insulation fault
Switching voltage................................................................................................................... ≤ 30 V
Switching current................................................................................................................. ≤ 5 mA
Switching resistance R
.................. high resistance >100 kΩ (120 °C), > 10 MΩ (25 °C)
OK+ / OK-
..........................................................................low resistance < 200 Ω (120 °C), < 100 Ω (25 °C)
Interfaces M+, M- ......................................................................................................... optocoupler
Function........................................................................................ measuring value via PWM signal
Operating principle................................................................................ duty cycle 5 % = > 50 MΩ
...............................................................................................................duty cycle 50 % = 1200 kΩ
.....................................................................................................................duty cycle 95 % = 0 kΩ
..................................................................................... duty cycle 0 % = device error (OK- / OK+)
................................................................................. duty cycle 100 % = device error (OK- / OK+)
...........................................................................R
........................................................................... Z
.................................................................................................... dc % = duty cycle (5 %...95 %)
Fundamental frequency PWM................................................................................................225 Hz
stable (DCP)............................................. ≤ 20 s
n
stable (PCP)......................................... ≤ 20 s
n
= (90 % * 1200 kΩ) / (dc % - 5 %) - 1200 kΩ
F
= (90 % * 1200 kΩ) / (dc % - 5 %) - 1200 kΩ
F
TBP106023deen / 09.2009
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