7 DEVICE VERIFICATION (CHECK OF CALIBRATION)
7.1 Standardized Methrological Characteristics
7.1.1 Effective Range:
− Effective value of alternating voltage, V 0-460.0
− Direct voltage, V 0-460.0
− Effective value of alternating current, A 0-10.00
− Voltage-voltage, current-current, voltage-current phase shift, deg-
180 - +180
− Frequencies of voltage and alternative current strength, Hz 45-65
7.1.2 Limit of permissible relative measurement error:
− Direct voltage, % ±[1+0.1(Ur/Um-1)]
− Effective value of alternative current, % ±[1+0.1(Ur/Um-1)]
− Effective value of alternative current, % ±[1+0.1(Ir/Im-1)]
− Frequencies of voltage and alternative current, % ±0.1
Limit of permissible reduced error of measurement:
− Voltage-voltage, current-current, voltage-current (with the voltage of
more than 30 V and current of more than 100 mA) phase shift, % ±1
7.2 Operations of Verification
7.2.1 Operations carried out during Initial and Periodical Verifica-
tion are presented in table 1.
Table 1
РА1.007.001РЭ-001
9
PARMA Ltd.
4.4 Electric strength and insulation resistance
4.4.1 Electric strength and insulation resistance conforms to GOST
26104 requirements.
4.4.2 Insulation resistance between short-circuits or equivalent cir-
cuits, insulated from the case of the device, on the one hand, and the other cir-
cuits accessible for external touch and device case, on the other hand, are no
less than 2.6 MW.
4.4.3 Electric insulation between network circuits and equivalent cir-
cuits can withstand test voltage of effective value of 2 kV, frequency of 50 Hz
during 1 minute without damage.
4.4.4 Electric insulation between network circuits and equivalent cir-
cuits and the case of the device can withstand test voltage of effective value of
4 kV, frequency of 50 Hz during 1 minute without damage.
4.5 Service requirements in overload conditions
4.5.1 The device can withstand overload of 2*Us voltage during 1 minute,
where Uk is a final value of a measured voltage range.
4.5.2 The device can withstand overload of 2*Is current during 1 minute,
where Ik is a final value of range of a measured strength of current.
4.6 Technical data
4.6.1 Guaranteed technical data
Range of measurement:
− Effective value of alternating voltage, V 0-460.0
− Direct voltage, V 0-460.0
− Effective value of alternating current, A 0-10.00
− Voltage-voltage, current-current, voltage-current phase shift, deg-
180 - +180
− Active (reactive) power, W (VAr) 0-4600
− Frequencies of voltage and alternative current, Hz 45-65
4.6.2 Limit of permissible relative measurement error:
− Direct voltage, % ±[1+0.1(Us/Um-1)]
− Effective value of alternative voltage, % ±[1+0.1(Us/Um-1)]
− Effective value of alternative current, % ±[1+0.1(Is/Im-1)]
− Frequencies of voltage and alternative current, % ±0.1
4.6.3 Limit of permissible reduced measurement error:
− Voltage-voltage, current-current, voltage-current
− (with the voltage of more than 30 V and current
− of more than 100 mA) phase shift, % ±1
− Active (reactive) power, % ±3
4.6.4 Reference technical data.
The device determines phase alternation order in three-phase sys-
tem.
Limiting value of voltage to be shown on display is no less than, V 600
Input resistance of voltage channels, no less than, MW 1
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