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ISOMETER® IR427 plus MK7
Einstellwerte Laststrommessung:
Trafo ................3150 VA ..... 4000 VA......5000 VA .....6300 VA ..... 8000 VA....10000 VA
I
...................14 A ........... 18 A............22 A ...........28 A ............35 A............45 A
alarm 1~
Ansprechzeit Überlast (50 % auf 120 %) .......................................... < 5 s
Ansprechzeit Wandlerüberwachung ..........................................................
.................................................................. bei Neustart, Test oder alle 1 h
Temperaturüberwachung
Ansprechwert (Festwert) ....................................................................4 kΩ
Rückfallwert (Festwert) ...................................................................1,6 kΩ
Kaltleiter nach DIN 44081 ................................................. max. 6 in Reihe
Ansprechzeit Übertemperatur ........................................................... < 2 s
Ansprechzeit Anschlussfehler Kaltleiter ............................................ < 2 s
Anzeigen, Speicher
Anzeige LC-Display ....................................multifunktional, unbeleuchtet
Messwert Isolationswiderstand ..........................................10 kΩ...1 MΩ
Betriebsmessabweichung .................................................± 10 %, ± 2 kΩ
Messwert Laststrom (in % vom eingestellten Ansprechwert) ...................
............................................................................................... 10...199 %
Betriebsmessabweichung ..................................................± 5 %, ± 0,2 A
Passwort ........................................................... on, off / 0...999 (off, 0)*
Schnittstelle für MK7
Leitungslänge, paarweise verdrillt, geschirmt .............................≤ 200 m
Empfohlene Leitung ..................................................................................
..........................................min. J-Y(St)Y 2x2 x 0,6; Schirm einseitig an PE
Stromversorgung (Klemme 1 und 2):
U
.........................................................................................DC 24 V
aus
I
(max. 4 MK7) .................................................................... 80 mA
max
Kommunikation (Klemme 3 und 4):
Schnittstelle/Protokoll .........................RS-485 / proprietär, kein BMS
Abschlusswiderstand ......................120 Ω (0,25 W), intern, schaltbar
Schnittstellen für Messstromwandler STW2 und
Temperaturfühler
Leitungslängen:
Einzeldraht > 0,5 mm² .............................................................≤ 1 m
Einzeldraht, verdrillt > 0,5 mm².............................................≤ 10 m
Paarweise verdrillt, geschirmt > 0,5 mm² ..............................≤ 40 m
Empfohlene Leitung ...........................................................................
....................................... min. J-Y(St)Y 2x0,6; Schirm einseitig an PE
Schaltglieder
Anzahl ...................................................................................... 1 Wechsler
Arbeitsweise ..............................Ruhestrom / Arbeitsstrom (Ruhestrom)*
Elektrische Lebensdauer bei Bemessungsbedingungen .............................
....................................................................................10.000 Schaltspiele
Kontaktdaten nach IEC 60947-5-1
Gebrauchskategorie ......................AC-13 / AC-14 / DC-12 / DC-12 / DC-12
Bemessungsbetriebsspannung ......... 230 V / 230 V / 24 V / 110 V / 220 V
Bemessungsbetriebsstrom ............................5 A / 3 A / 1 A / 0,2 A / 0,1 A
Minimale Kontaktbelastbarkeit .............................. 1 mA bei AC / DC 10 V
14
IR427-MK7_D00118_03_M_DEEN/07.2024
Setting value load current measurement:
Transformer ...3150 VA ......4000 VA ......5000 VA ......6300 VA ...... 8000 VA ... 10000 VA
I
...................14 A ........... 18 A............22 A ...........28 A ............35 A............45 A
alarm 1~
Response time overload, (50 % to 120 %) ........................................ < 5 s
Response time for measuring current transformer monitoring..................
.........................................................................at restart, test or every 1 h
Temperature monitoring
Response value (fixed value) ..............................................................4 kΩ
Release value (fixed value) ..............................................................1.6 kΩ
PTC thermistors acc. to DIN 44081 .................................... max. 6 in series
Response time overtemperature ....................................................... < 2 s
Response time connection fault PTC resistors ................................... < 2 s
Displays, memory
LC display ................................................multifunctional, not illuminated
Measured value insulation resistance .................................10 kΩ...1 MΩ
Operating error ................................................................. ±10 %, ± 2 kΩ
Measured value load current (as % of the set response value) ..................
............................................................................................... 10...199 %
Operating error ................................................................... ±5 %, ±0.2 A
Password .......................................................... on, off / 0...999 (off, 0)*
Interface for MK7
Cable length, twisted pairs, shielded ...........................................≤ 200 m
Recommended cable .................................................................................
...................... min. J-Y(St)Y 2x2 x 0.6; shield on one side connected to PE
Power supply (terminals 1 and 2):
U
.........................................................................................DC 24 V
aus
I
(max. 4 MK7) .................................................................... 80 mA
max
Communication (terminal 3 and 4):
Interface/protocol ................RS-485 / proprietary interface (no BMS)
Terminating resistor ................. 120 Ω (0.25 W), internal, switchable
Interfaces for STW2 measuring current transformer and
temperature sensor
Cable lengths:
Single wire > 0.5 mm² .............................................................≤ 1 m
Single wire, twisted > 0.5 mm² .............................................≤ 10 m
twisted pair, shielded > 0.5 mm² ...........................................≤ 40 m
Recommended cable ..........................................................................
....................min. J-Y(St)Y 2x0.6, shield on one side connected to PE
Switching elements
Number of changeover contacts ..............................1 changeover contact
Operating principle ........ N/C operation / N/O operation (N/C operation)*
Electrical service life, number of cycles ......................................................
........................................................................................................10.000
Contact data acc. to IEC 60947-5-1
Utilization category .....................AC -13 / AC -14 / DC-12 / DC-12 / DC-12
Rated operational voltage .................. 230 V / 230V / 24 V / 110V / 220 V
Rated operational current ............................. 5 A / 3 A / 1 A / 0.2 A / 0.1 A
Minimum contact load ..............................................1 mA at AC / DC 10 V
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