Technical Data
Technical Data
Use Copper conductors only, 75°C.
Conductor size AWG 14 [2.5 mm].
Climatic Environmental Conditions
Storage Temperature:
-25°C up to +70°C (-13°F to 158°F)
Operating Temperature:
0°C up to +55°C (32°F to 131°F)
Permissible Humidity at Ann. Average:
<75% rel. (on 56d up to 95% rel.)
Permissible Installation Altitude:
<2000 m (6561.67 ft) above sea level
If 4000m (13123.35 ft) altitude apply a changed classification of
the operating and test voltages may be necessary.
Degree of Protection EN 60529
HMI front panel with seal
IP54
HMI front panel without seal
IP50
Rear side terminals
IP20
Routine Test
Insulation test acc. to IEC60255-5:
All tests to be carried out against earth and other input- and
output circuits
Aux. voltage supply, digital inputs,
current measuring inputs, signal relay
outputs:
2.5 kV (eff) / 50 Hz
Voltage measuring inputs:
3.0 kV (eff) / 50 Hz
All wire-bound communication interfaces: 1.5 kV DC
Housing
Housing B1: height/-width
173 mm (6.811” / 4 U)/ 141.5 mm (5.571” / 28 HP)
Housing depth (incl. terminals):
208 mm (8.189”)
Material, housing:
Aluminum extruded section
Material, front panel:
Aluminum/Foil front
Mounting position:
Horizontal (±45° around the X-axis must be permitted)
Weight:
MRU4 housing B1: approx. 2.4 kg (5.291 lb)
Page 310
EN MRU4 10/09
