
isoES425_D00214_01_Q_DEEN/ 11.2023 7
ISOMETER® isoES425
Technical data
()* = Factory settings
Insulation coordination acc. to IEC 60664-1/IEC 60664-3
Rated voltage.................................................................................400 V
Overvoltage category...........................................................................III
Supply voltage
Supply voltage Us.................................. AC 100…240 V/DC 24…240 V
Tolerance of Us.................................................................. -30…+15 %
Frequency range Us...............................................................47…63 Hz
Power consumption.........................................................≤ 3 W, ≤ 9 VA
Monitored IT system
Nominal system voltage Un...................................3(N)AC, AC 0…400 V
Tolerance of Un.............................................................................+25 %
Frequency range of Un..................................................DC, 15…460 Hz
Response values
Response value Ran1 .............................................. 2…990 kΩ (69 kΩ)*
Response value Ran2 .............................................. 1…980 kΩ (23 kΩ)*
Relative uncertainty Ran ..................................... ±15 %, at least ±1 kΩ
Hysteresis Ran ........................................................... 25 %, at least 1 kΩ
Undervoltage detection U<........................................ 10…499 V (off)*
Overvoltage detection U>.......................................... 11…500 V (off)*
Relative uncertainty U..............................................±5 %, at least ±5 V
Relative uncertainty depending on the frequency ≥ 400 Hz ..................
.......................................................................................... −0.015 %/Hz
Hysteresis U...................................................................5 %, at least 5 V
Time response
Response time tan at RF= 0.5 x Ran and Ce=1 μF acc. to IEC 61557-8......
......................................................................................................≤ 10 s
Start-up delay t................................................................0…10 s (0 s)*
Response delay ton ...........................................................0…99 s (0 s)*
Delay on release toff..........................................................0…99 s (0 s)*
Interface
Interface/protocol..................................................RS-485/BMS, isoData
Baud rate...................................BMS (9.6 kbit/s), isoData (115.2 kbit/s)
Cable length (9.6 kbit/s)........................................................≤ 1,200 m
Cable (shield connected to PE on one side):
recommended:............................................. CAT6/CAT7 min. WG23
twisted pairs: ...................................................min. J-Y(St)Y 2 x 0.8
Terminating resistor............ 120 Ω (0.25 W), internal, can be connected
Device address, BMS bus, Modbus RTU.................................3…90 (3)*
Connection
Connection type........................................................push-wire terminal
Nominal current...........................................................................≤ 10 A
Conductor sizes.....................................................................AWG 24-14
Stripping length...........................................................................10 mm
Rigid ................................................................................0.2…2.5 mm²
Flexible without ferrules.............................................0.75…2.5 mm²
Technische Daten
()* = Werkseinstellung
Isolationskoordination nach IEC 60664-1/IEC 60664-3
Bemessungsspannung................................................................... 400 V
Überspannungskategorie.....................................................................III
Versorgungsspannung
Versorgungsspannung Us...................... AC 100…240 V/DC 24…240 V
Toleranz von Us................................................................. -30…+15 %
Frequenzbereich Us...............................................................47…63 Hz
Eigenverbrauch................................................................≤ 3 W, ≤ 9 VA
Überwachtes IT-System
Netznennspannung Un..........................................3(N)AC, AC 0…400 V
Toleranz von Un............................................................................+25 %
Frequenzbereich von Un...............................................DC, 15…460 Hz
Ansprechwerte
Ansprechwert Ran1 ................................................. 2…990 kΩ (69 kΩ)*
Ansprechwert Ran2 ................................................. 1…980 kΩ (23 kΩ)*
Ansprechunsicherheit Ran .............................±15 %, mindestens ±1 kΩ
Hysterese Ran ......................................................25 %, mindestens 1 kΩ
Unterspannungserkennung U<................................. .10…499 V (off)*
Überspannungserkennung U>................................... 11…500 V (off)*
Ansprechunsicherheit U.....................................±5 %, mindestens ±5 V
Frequenzabhängige Ansprechunsicherheit ≥ 400 Hz.............................
.......................................................................................... −0,015 %/Hz
Hysterese U............................................................5 %, mindestens 5 V
Zeitverhalten
Ansprechzeit tan bei RF = 0.5 x Ran und Ce = 1 μF nach IEC 61557-8 .......
......................................................................................................≤ 10 s
Anlaufverzögerung t........................................................0…10 s (0 s)*
Ansprechverzögerung ton.................................................0…99 s (0 s)*
Rückfallverzögerung toff...................................................0…99 s (0 s)*
Schnittstelle
Schnittstelle/Protokoll...........................................RS-485/BMS, isoData
Baudrate....................................BMS (9,6 kbit/s), isoData (115,2 kbit/s)
Leitungslänge (9,6 kbit/s)...................................................... ≤ 1 200 m
Leitung (Schirm einseitig an PE)
empfohlen: ..................................................... CAT6/7 min. AWG23
alternativ paarweise verdrillt:..........................min. J-Y(St)Y 2 x 0,8
Abschlusswiderstand.......................120 Ω (0,25 W), intern, zuschaltbar
Geräteadresse, BMS-Bus, Modbus RTU .................................3…90 (3)*
Anschluss
Anschlussart...................................................................... Federklemme
Nennstrom................................................................................... ≤ 10 A
Leitergrößen.........................................................................AWG 24-14
Abisolierlänge..............................................................................10 mm
Starr.................................................................................0,2…2,5 mm²
Flexibel ohne Aderendhülse......................................0,75…2,5 mm²