RuoShui VR-4106, Инструкция по эксплуатации

Страница: 8 / 35

www.victorruoshui.co.kr
이 자료는 저작권법에 따라 보호받는 저작물이므로 무단배포 및 무단복제를 금하며, 내용의 전부 또는 일부를 이용하려면, 반드시 한국 VictorRuoshui 社 의 서면동의를 받아야 합니다.

Use probes conforming to IEC61557-5 when measuring current and voltage.

Open-circuit voltage Um: Max. About 50Vpp, rectangle wave.

Short-circuit current lm: Max.20mA, but Im
☓ （
RH +RE
）
< Um

Measuring frequency : 94Hz
、
105Hz
、
111Hz
、
128Hz, manual selection.

Measuring time: Typical 12 seconds.

Measuring error for RH, RS : typical (RH+RS+RE) 10%

Additional error for RH MAX or RS MAX: 3%+10

Series interference voltage: in 400 Hz
、
60 Hz
、
50 Hz
、
16
2
3
Hz system frequency or input series
interference voltage by DC voltage through E and S terminals. The mean square root value of r.m.s. in
series interference voltage is
3V. (DC is excluded in 20Ω range)

Additional error for 3V series interference voltage:5%+10.

After measuring the probe resistance, auxiliary earth resistance and earth resistance, the Instrument will
display a Warning notice to indicate over high RS or RH value if the measurement error is higher than
30% when considering impacting conditions.
Earth Resistivity (ρ)
Range Measuring Range Resolution Accuracy
20Ω·m
0Ω·m ～ 19.99Ω·m
0.01Ω·m
depends on RG
ρ ＝ 2×π×a×RG
200Ω·m
20.0Ω·m
～
199.9Ω·m
0.1Ω·m
2000Ω·m
200Ω·m
～
1999Ω·m
1Ω·m