Bender IR420-D4-2 B71016405 データシート

34 

TDB101012en / Main catalogue part 1 – Insulation monitoring / 09.2011  

A-ISOMETER® IR420

Rated insulation voltage 

250 V

Rated impulse voltage/pollution degree 

2.5 kV / III

Protective separation (reinforced insulation) between
 

(A1, A2) - (L1, L2, E, KE, T/R) - (11, 12, 14) - (21, 22, 24)

Voltage test acc. to IEC 61010-1 

 2.21 kV 

Supply voltage U

S

  

see ordering information

Power consumption 

≤ 3 VA

Nominal system voltage U

n

  

 AC 0…300 V

Nominal frequency f

n

  

 42…460 Hz

Response value R

an1

 (Alarm 1) 

1…200 kΩ

Response value R

an2

 (Alarm 2) 

1…200 kΩ

PreSet mode 

n

 ≤ 72 V R

an1

 (Alarm 1) = 20 kΩ / R

an2

 (Alarm 2) = 10 kΩ

 

n

 > 72 V R

an1

 (Alarm 1) = 46 kΩ / R

an2

 (Alarm 2) = 23 kΩ 

Relative uncertainty 1 kΩ…5 kΩ / 5 kΩ…200 kΩ 

± 0.5 kΩ / ± 15 %

Hysteresis 25 

%

Response time t

an

 at R

F

 = 0.5 x R

an

 and C

e

 = 1 μF  

 ≤ 1 s

Start-up delay t  

0…10 s (0 s)*

Response delay t

on

 

0…99 s (0 s)*

Measuring voltage U

m

 12 

V

Measuring current I

m

 (at R

F

 = 0 Ω) 

 ≤ 200 μA

Internal DC resistance R

i

 

≥ 62 kΩ

Impedance Z

i

 at 50 Hz 

≥ 60 kΩ

Permissible extraneous DC voltage U

fg

 

≤ DC 300 V

Permissible system leakage capacitance  

≤ 20 μF

Display range, measuring value 

1 kΩ…1 MΩ

Operating uncertainty 1 kΩ…5 kΩ / 5 kΩ…1 MΩ  

± 0.5 kΩ / ± 15 %

Password  

off / 0…999 (off)*

Fault memory, alarm relay 

on/off*

Cable length test and reset button 

≤ 10 m

Number of switching elements  

 2 x 1 changeover contact

Operating principle 

NC / N/O operation (N/O operation)*

Electrical service life, number of cycles  

 10.000

Contact data acc. to IEC 60947-5-1
Utilisation category 

AC-13 

AC-14 

DC-12 

DC-12  DC-12

Rated operational voltage 

230 V 

230 V 

220 V 

110 V 

24 V

Rated operational current 

5 A 

3 A 

0.1 A 

0.2 A 

1 A

Minimum contact rating 

1 mA at AC / DC ≥ 10 V

EMC IEC 

61326

Operating temperature 

- 25 °C…+ 55 °C

Climatic class acc. to IEC 60721
Stationary use (IEC 60721-3-3) 

3K5 (except condensation and formation of ice)

Transport (IEC 60721-3-2) 

2K3 (except condensation and formation of ice)

Long-time storage (IEC 60721-3-1) 

1K4 (except condensation and formation of ice)

Classification of mechanical conditions IEC 60721 
Stationary use (IEC 60721-3-3) 

3M4

Transport (IEC 60721-3-2) 

2M2

Long-time storage (IEC 60721-3-1) 

1M3

Connection type 

 push-wire terminal

Connection properties
rigid 

0.2…2.5 mm² / AWG 24-14

Flexible without ferrule 

0.2…2.5 mm² / AWG 24-14

Flexible with ferrule 

0.2…1.5 mm² / AWG 24-16

Stripping length 

 10 mm

Opening force 

 50 N

Test opening, diameter 

 2.1 mm

Operating mode 

continuous operation

Mounting any 

position

Degree of protection, internal components (IEC 60529)  

 IP 30 

Degree of protection, terminals (IEC 60529) 

IP 20

Enclosure material 

 polycarbonate

DIN rail mounting acc. to 

 IEC 60715

Screw mounting 

 2 x M4 with mounting clip

Operating manual 

TBP101012

Weight  

≤ 150 g

( )* = factory setting

Mounting clip for screw mounting (1 piece per device)

B 9806 0008

IR420-D4-1

AC 42…460 Hz 0…300 V

DC 9.6…94 V / AC 42…460 Hz 16…72 V

1…200 kΩ

< 20 μF

B 7101 6409

IR420-D4-2

AC 42…460 Hz 0…300 V

DC 70…300 V / AC 42…460 Hz 70…300 V

1…200 kΩ

< 20 μF

B 7101 6405

Device version with screw terminals on request.
* Absolute values