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A-ISOMETER® IR470LY… 1 - Combined test/reset button "TEST(RESET";short-time pressing ( 1 s) = TEST2 - Power On LED "ON"3, 4 - Alarm LEDs, yellow, light when the value falls below theset response value and flash in case of interruption of the connecting leads Wiring diagram – Front plate and system connection Technical data A-ISOMETER® IR470LY… Insulation coordination acc. to IEC 60664-1 Rated insulation voltage AC 630 VRated impulse voltage/pollution degree 6 kV/3 Voltage ranges Nominal system voltage U
n AC, 3(N)AC 0…793 VRated frequency fn 40…460 HzSupply voltage U
S see ordering informationOperating range of U
s 0.8…1.15 x U
s Frequency range U
s 50…460 HzPower consumption max. 3 VA

Insulation Monitoring Devices - 14922 123456 7101112138

Response values 6.16.36.46.2

9

Response value R
an1 (Alarm 1) 1 k Ω …200 k Ω Response time t
an bei R
F = 0.5 x R
an and C
e = 1 µFRange 10…200 k Ω ≤ 1 sRange 1…10 k Ω ≤ 3 s Measuring circuit Measuring voltage U
m ≤ 40 VMeasuring current I
m (at R
F = 0 Ω ) ≤ 200 µAInternal DC resistance R
i ≥ 200 k Ω Impedance Z
i at 50 Hz ≥ 180 k Ω Permissible extraneous DC voltage U
fg ≤ 800 VPermissible system leakage capacitance ≤ 20 F Outputs
1.4 earth/KE or L1/L2.5 - kΩ LED line6 - Test/reset button internal/externalCurrent output for measuring instrument
(scale centre point = 120 k Ω ) 0…400 µALoad ≤ 25 k Operating principle of the alarm relays and setting range R
ALARM Ω 6.1 - N/O operation 6.3 - x 10 kΩ6.2 - N/C operation 6.4 - x 1 kΩChanging the setting range from x 1 kΩ to x 10 kΩ automa-tically changes the indication of the kΩ values on the LED bar graph indicator. Setting range x 1 kΩ: Meter scale point x 1 kΩ. Setting range: x 10 kΩ: Meter scale point has to be multiplied by 10 kΩ.7 - Potentiometer to set the response value R Switching elements Switching elements 2 changeover contactsOperating principle N/O operation / N/C operation Factory setting N/O operationElectrical service life, number of cycles 12000Contact class IIB in accordance with DIN IEC 602550-20Rated contact voltage AC 250 V/DC 300 V Making 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 Minimum contact current at DC 24 V 2 mA (50 mW) General data
ALARM 8 - Alarm relay - N/O operation (basic setting)9 - Alarm relay - N/C operation 10 - External kΩ indicating instrument11 - External reset button or contact bridge for fault memory12 - External test button13 - U Shock resistance IEC 60068-2-27
S see ordering information, 6 A fuse recommended
(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

1324

2 /0.2…2.5 mm
2 Degree of protection, internal components (DIN EN 60529) IP 30 Degree of protection, terminals (DIN EN 60529) IP 20Screw mounting 2 x M4DIN 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-96Operating manual BP104001Weight approx. 360 g 1 - U
n 3NAC system2 - U
n 3AC system3 - U
n AC system4 - U
n with coupling devices: AGH204S-4 = 0…1300 V resp. 0…1650 V, AGH520S = 0…7200 V, here: Coupling device AGH204S-4 connected to U
n 3AC system
Main catalogue part 1 – 08.2007/Insulation monitoring 49