Lumel ND20 - Page 64

64
Reference and rated operating conditions
- supply voltage 85..253 V a.c. (40...400) Hz or
90..300 V d.c.
20..40 V a.c. (40...400) Hz or
20..60 V d.c.
- input signal: 0...0.002...1.2 I
n
; 0.05...1.2 U
n
for current, voltage
0...0.002...1.2 I
n
; 0...0.1...1.2 U
n
for power factors Pf
i
,tj
i
frequency
47...63 Hz
sinusoidal (THD  8%)
- power factor -1...0...1
- ambient temperature -25...23...+55°C
- storage temperature -30...+70°C
- relative humidity 25...95% (condensation inadmissible)
- admissible peak factor:
- current intensity 2
- voltage 2
- external magnetic field 0...40...400 A/m
- short duration overload (5 s)
- voltage inputs 2 Un (max.1000 V)
- current inputs 10 In
- operating position any
- preheating time 5 min.
Battery of the real time clock: CR2032
Additional errors:
in % of the basic error
- from frequency of input signals < 50%
- from ambient temperature changes < 50%/10°C
- for THD > 8% < 100%