Siemens MJ-5, Инструкция по установке и эксплуатации

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Appendix A
Siemens Industry, Inc. 56
A: Specifications
Operational Requirements
Temperature
Operating: -40°C to +85°C
Storage: -40°C to +85°C
Humidity
Operating: Relative humidity of 5% to 95% non-
condensing
Storage: Relative humidity of 5% to 95% non-condensing
(U2 and P2 range)
80 to 145 volts RMS
Frequency
45 to 65 Hz
Accuracy
Metering accuracy*: ±0.5% over the -40°C to +85°C
operating range.
* Basic accuracy of the MJ-5 (excludes Potential
Transformer or Current Transformer errors).
Electrical transient immunity
The MJ-5 Current Transformer (CT) withstands a sudden
open circuit without damage to the control circuit.
However, an open CT circuit can result in dangerously high
voltage, and should be avoided.
The MJ-5 Control Panel is impervious to electrical
transients as defined by the following:
Surge: ANSI/IEEE C37.90.1-2002
All PDS and terminal strip connections
High Energy Surge: ANSI/IEEE C62.41-1980
U2 and P2 inputs only
Not susceptible to upset due to high radio frequency
interference (RFI) defined by the following:
RFI Susceptibility: ANSI/IEEE C37.90.2-1987.