KYORITSU 6315 Instruction Manual - Manual (Page 137)

Items measured at Instantaneous measurement KEW6315
- 135 - KEW6315
R.M.S. Current A [Arms]
Range MODEL8128 (50A) :5000m/50.00A/AUTO
MODEL8127 (100A) :10.00/100.0A/AUTO
MODEL8126 (200A) :20.00/200.0A/AUTO
MODEL8125 (500A) :50.00/500.0A/AUTO
MODEL8124/30 (1000A) :100.0/1000A/AUTO
MODEL8141/8142/8143 (1A) :500.0mA
MODEL8146/8147/8148 (10A) :1000m/10.00A/AUTO
MODEL8129 (3000A) :300.0/1000/3000A
Displayed digit 4-digit
Effective input
range 1% - 110% of each Range (rms) and 200% of Range (peak)
Display area 0.15% - 130% of each range (“0” is displayed at less than 0.15%)
Crest factor 3 or less
Meas. system Complied with IEC61000-4-30
Accuracy Assuming that measuring 40-70Hz, sine wave:
±0.2%rdg±0.2%f.s.+ accuracy of clamp sensor
Input impedance approx 100kΩ
Equation
( )












=
∑
−
=
1
0
2
1 n
i
ci c
A
n
A
c : Measurement channel A
1,
A
2,
A
3,
A
4
i :sampling point*
n: number of sampled values at 10 or
12-cycle
* 50Hz: 8192 points in 10 waveforms, 60Hz: 8192 points in 12 waveforms
* A
3 value for
3P3W-1 to 2 is calculated with r.m.s. current values.
A
3
= √ (A
1
^2 + A
2
^2+2×A
1
×A
2
×cosθA) relative angles of θA = A
1
, A
2