Technical Data; Operating Conditions Of Alr 20/A Ex; Electrical Data Of Alr 20/A Ex; Dimensions And Weights - Grundfos ALR 20/A Ex Montage- Und Betriebsanleitung

9. Technical data

9.1 Operating conditions of ALR 20/A Ex

9.1.1 Ambient temperature
-20 to +40 °C
9.1.2 Relative humidity
Max. 95 % (no condensation)
9.1.3 Installation altitude
Maximum 2000 m above sea level

9.2 Electrical data of ALR 20/A Ex

9.2.1 Nominal operating voltage
230 V AC
9.2.2 Permitted voltage tolerance
-15 to +10 %
9.2.3 Frequency
50-60 Hz
9.2.4 Power input
Approximately 4 VA
9.2.5 Power transformer
According to EN 61558-1/EN 61558-2-6, must be
short-circuit proof: VDE, SEV mark of conformity.
9.2.6 On time
100 %
9.2.7 Air gaps and leakage distance
Mains/relay output, according to EN 60664-1
Leakage distance: 12 mm
9.2.8 Overvoltage category
Category II
9.2.9 Rating surge voltage
4 kV
9.2.10 Interference emission
According to EN 61000-6-4
9.2.11 Immunity to interference
According to EN 61000-6-2
9.2.12 Relay output
1 change-over switch, potential-free
9.2.13 Insulation test voltage
Inductor contact 5 kV AC
Surge 10 kV (1.2 × 50 µs)
9.2.14 Maximum switching voltage
250 V AC / 24 V DC
9.2.15 Maximum switching current
5 A
9.2.16 Maximum switching capacity
100 VA / 100 W
9.2.17 Electrical life cycle
100 000 switching cycles at maximum load
9.2.18 Mechanical life cycle
20 000 000 switching cycles
9.2.19 Connections
Conductor cross-section stranded wire 2.5 mm
2
single-wired 4 mm
9.2.20 Enclosure class
IP20 according to EN 60529.
In order to meet the requirements of Pollution
Degree 2, install ALR 20/A Ex in a protected
environment with enclosure class IP54 or better,
according to IEC 60529. The cabinet must be of a
flame-retardant material.
9.2.21 Leakage sensor circuit
Intrinsically safe according to EN 60079-11. [ib Gb]
IIC
Uo = 15.8 V
Io = 125 mA
Co = 0.478 µF
Lo = 12 µH

9.3 Dimensions and weights

9.3.1 Dimensions
Dimensions include the mounting bracket.
Height Width
96 mm 49 mm
9.3.2 Weight
Product weight: 0.175 kg

10. Disposal

This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
See also end-of-life information at
www.grundfos.com/product-recycling.
2
,
Depth
50 mm
11