WM-12A  4位半（AC / DC）
瓦特量測電錶

MODEL WM-12A

Display............. 4 1/2 （19999） 0.56〞（14.2mm）, Red LED
Accuracy........................................... ±0.25% RD.±3 digits
Max. input over capability.......... Amp. 3×rated continuous
10×rated for 10 sec
50×rated for 1 sec
Volt. 750V continuous
Conversion rate （about） ............................................ 1/sec.
Input burden ............................Volt. input≦0.7VA/Phase
Amp. input≦0.7VA/Phase
Over input indication........................................"0000"flash
Operating temp. .................................................. 0～60℃
Storage temp. .................................................. -10～70℃
Temp. coefficient ...............................................................
..................... ≦100PPM/℃（≦60PPM/℃, 25℃±10℃）
Max. relative humidity ............................................... 95%
Dielectric strength ..... AC 2 KV/1 min. （input/power/case）
Surge test ..............................4 KV/1.2×50μs, IEC 255-4
Aux. power ...................AC 115V/230V ±10%, 50/60 Hz
DC 24V, 48V, 110V, ±20% （option）
Power consumption ........................... AC 3.5VA, DC 3W
Weight （about） ......................................................... 350g

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