YOKOGAWA MY600, User Manual

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27
IM MY600-01EN
Insulation resistance measurement operating uncertainty
(IEC61557-2 and JIS C 1302)
Formula:
B = ±(|A|+ 1.15 x E1
2
+ E2
2
+ E3
2
)
A Intrinsic error
E1 Influence of position
E2 Influence of supply voltage
(until the battery indicator reaches )
E3 Influence of temperature
(IEC61557-2: 0°C to 35°C, JIS C1302: 0°C to 40°C)
The specifications of this instrument are as follows:
Intrinsic error (A) within ±5 % of indicated value
(coverage factor: k=2)
Influence of supply voltage (E2) within ±5 % of indicated
value
Influence of temperature (E3) within ±5 % of indicated
value
Max. operating uncertainty (B) 14%
* The measuring range to keep the maximum operating
uncertainty is the same as the 1st effective measuring
range.
Low-resistance measurement operating uncertainty
(IEC61557-4)
Formula:
B = ±(|A|+ 1.15 x E1
2
+ E2
2
+ E3
2
)
A Intrinsic error
E1 Influence of position
E2 Influence of supply voltage
(until the battery indicator reaches )
E3 Influence of temperature (0°C to 35°C)
* The measuring range to keep the maximum operating
uncertainty (within ±30%) is 0.2 to 4000 Ω.