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A-ISOMETER® IR125Y-4 Wiring diagram – Operating elements Technical data A-ISOMETER® IR125Y-4 Insulation coordination acc. to IEC 60664-1 Rated insulation voltage AC 250 VRated impulse voltage/pollution degree 4 kV/3 Voltage ranges Nominal system voltage U
n DC 19.2…308 VSupply voltage U
S = U
n Power consumption max.
1.2

Insulation Monitoring Devices - 14922 15 78 263

Switching elements Switching elements 1 changeover contactOperating principle N/C operationElectrical service life, number of cycles 12000 Contact class IIB in accordance with DIN IEC 60255-0-20Rated contact voltage AC 250 V/DC 300 VMaking capacity AC/DC 5 ABreaking capacity 2 A, AC 230 V, cos phi = 0.4 – 0.2 A, DC 220 V, L/R = 0.04 s General data

4

Shock resistance IEC 60068-2-27
(during operation) 15 g/11 msBumping IEC 60068-2-29
(during transport) 40 g/6 msVibration resistance IEC 60068-2-6
(during operation) 1 g/10…150 HzVibration resistance IEC 60068-2-6
(during transport) 2 g/10…150 HzAmbient temperature
(during operation/during storage) - 10 °C…+ 55 °C/- 40 °C…+ 70 °CClimatic class acc. to DIN IEC 60721-3-3 3K5Operating mode continuous operationMounting any positionConnection screw terminalsConnection properties rigid/flexible 0.2…4 mm 1 - Power ON LED "ON"2 - Alarm LED "ALARM"3 - Combined test and reset button "TEST/RESET". Short-time pressing: ( 1 s) = TEST4 - Adjustable response value 10…200 kΩ5 - "R1/R2" bridged: Fault memory active6 - Alarm relay in N/C operation7 - Alarm8 - No alarm
2 /0.2…2.5 mm
2 Degree of protection, internal components/terminals (DIN EN 60529) IP 30/IP 20 Screw mounting with mounting plateDIN rail mounting acc. to DIN EN 60715/IEC 60715Flammability class UL94V-0Product standards DIN EN 61557-8: 1998-05, EN 61557-8: 1997-03, IEC 61557-8: 1997-02, ASTM F1669M-96. Operating manual BP102005Weight approx. 130 g Response value/measuring circuits Dimension diagram XM22 Dimensions in mm Type Response Response System leakage value R
an time t
an capacitance C
e IR125Y-4… 10 k Ω …200 k Ω ≤ 6 s ≤ 10 µF Type Measuring Measuring current I
m Internal voltage U
m resistance R
i IR125Y-4… 13 V ≤ 0.12 mA 112 k Ω Ordering information A-ISOMETER® IR125Y-4 Type Nominal system voltage U
n Art. No. IR125Y-4 DC 19.2…308 V* B 9102 3005Mounting plate -- B 990 056 *Absolute value
Main catalogue part 1 – 08.2007/Insulation monitoring 39