Technical Data P44x/EN TD/E33
MiCOM P441/P442 & P444
Page 13/30
4. ENVIRONMENTAL COMPLIANCE
The product complies with the following specifications :
4.1 Electrical Environment
4.1.1 DC Supply Interruptions IEC60255-11:1979
The product will withstand a 20ms interruption in the auxiliary voltage in its quiescent
condition.
4.1.2 AC Ripple on DC Supply IEC60255-11:1979
The product will operate with 12% AC ripple on the DC auxiliary supply without any
additional measurement errors.
4.1.3 Disturbances on AC Supply - EN61000-4-11:1994
The products satisfies the requirements of EN61000-4-11 for voltage dips and short
interruptions.
4.1.4 High Frequency Disturbance IEC60255-22-1:1988
The product complies with Class III 2.5kV common mode and 1kV differential mode for 2
seconds at 1MHz with 200Ω source impedance, without any mal-operations or additional
measurement errors.
4.1.5 Fast Transient IEC60255-22-4:1992
The product complies with all classes up to and including class IV/4kV without any mal-
operations or additional measurement errors.
Fast transient disturbances on power supply
(common mode only)
4kV, 5ns rise time, 50ns decay time, 5kHz
repetition time, 15ms burst, repeated every
300ms for 1min in each polarity, with a 50Ω
source impedance.
Fast transient disturbances on I/O signal,
data and control lines (common mode only)
4kV, 5ns rise time, 50ns decay time, 5kHz
repetition time, 15ms burst, repeated every
300ms for 1min in each polarity, with a 50Ω
source impedance.
4.1.6 Electrostatic Discharge IEC60255-22-2:1996
The product will withstand application of all discharge levels up to the following without mal-
operation:
Class IV– 15kV discharge in air to the user interface, display and exposed metal work.
Class III– 8kV discharge in air to all communication ports, 6kV point contact discharge to any
part of the front of the product.
4.1.7 Conducted Emissions EN 55011:1991
Group 1 Class A limits.
0.15 - 0.5MHz, 79dBµV (quasi peak) 66dBµV (average).
0.5 - 30MHz, 73dBµV (quasi peak) 60dBµV (average).
4.1.8 Radiated Emissions EN 55011:1991
Group 1 Class A limits.
30 - 230MHz, 40dBµV/m at 10m measurement distance.
230 - 1000MHz, 47dBµV/m at 10m measurement distance.
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