Product Announcement from Hsiang Cheng Electric Corp.

Digital Power Meter for Utility MA / MV -Image

Specification
Accuracy (23 + 3oC)
0.2% fs
Stability
Temperature coefficient < 50 ppm per degree C
Long term draft < 0.2% per year
Digits & counts
3-3/4 digits of 3999 counts maximum, 4-1/2 digits 19999 counts maximum
Display
0.56" super rate LED
Response time
Sample rate 1 of per sec typically
input burden
0.25 VA maximum
input over
Current input : 3 * rating-continuous, 10 * rating-30 sec, 25 * rating-3 sec
Voltage input : maximum continuous of 750V or 3 * rating which ever great
Frequency
48-400 Hz
Dielectric strength
2.5KV rms / 1 minute, all terminals to reference ground
2KV rms / 1 minute, input terminals to power terminals
Surge test
ANSI C37.90.1 / 1989, IEC 255-3 (1989)
Impulse voltage
Impulse voltage 1.2 * 50 us 4KV
Oscillating wave 0.5 us-100 KHz 3KV & 1MHz-0.25 ms 2.5KV
Operating condition
Operating temperature range -10 to 55oC, humidity 0-99% RH non-condensed
Storage -25 to 70oC, 20-99% RH non-condensed
Auxiliary power
AC / DC version < 3.5 VA, DC option version + 20% < 5 Watts

 
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