CHAPTER 1: INTRODUCTION SPECIFICATIONS
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 1–21
Environmental
OPERATING ENVIRONMENT
Ambient temperatures:
Storage/Shipping: -40
o
C to 85
o
C
Operating: -40
o
C to 60
o
C
Humidity: Operating up to 95% (non condensing) @ 55
o
C (As
per IEC60068-2-30 Variant 2, 6 days)
Altitude: 2000 m (max)
Pollution Degree: II
Overvoltage Category: III
Ingress Protection: IP54 Front, IP20 cover (optional)
Noise: 0 dB
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