UAPS-1Ì, UAPS-1ÌG, UAPS-1Ì/R

PURPOSE AND FIELD OF APPLICATION

    The calibrators are intended for periodic recalibration of static single-phase and three-phase electricity meters  measuring active and reactive energy in two directions.

    There are three modifications of calibrators for metrological verification of electricity meters:

• UAPS-1Ì.
• UAPS-1ÌG that differs from UAPS-1Ì in the possibility to introduce the fifth current and voltage harmonic, odd harmonics and subharmonics.
• UAPS-1Ì/R that differs from UAPS-1Ì calibrator in the possibility to work with energy meters with galvanic coupled current and voltage circuits and in availability of   benches to connect meters calibrated.

    Automatic operating mode of the calibrators for metrological verification of electricity meters owing to PC control.

    Number of energy meters of the same type being calibrated at the same time:

• up to 6 three-phase meters;
• up to 18 single-phase meters.

TECHNICAL FEATURES OF CALIBRATORS FOR METROLOGICAL VERIFICATION OF ELECTRICITY METERS

• Accuracy class of meters calibrated - 0,5 and less accurate for active energy and 1,0 and less accurate for reactive energy.
• Accuracy class - 1,0 and less accurate for active energy and 2,0 and less accurate for reactive energy (for UAPS-1M/R calibrator).
• Nominal phase voltages 57,7 V and 230 V and nominal line voltages 100 V and 400 V  are determined within the limits from  0,7 tî 1,2 of the nominal value.
• Range of output currents of current unit - from 0,001 À to 100,0 À.
• Total maximum power of each phase of voltage and current signals – not less than 80 ÀV and 150 ÀV.

    UAPS-1 calibrators for metrological verification of electricity meters ensure:

• reduction of calibration time  by half as a result of automatic setting of calibration and adjusting modes of electricity meters  owing to  control from a personal computer  (PC);
• meter error measurement, comparison of error value with preset permissible deviations, as well as indication for rejection;
  
• calibration of meter sensitivity and meter creep;
• keeping of a calibration protocoll in form of a saved file and the possibility to print it out;
• absence of additional errors because of exclusion of human factor during calibration.

COMPLETE EQUIPMENT OF CALIBRATORS FOR METROLOGICAL VERIFICATION OF ELECTRICITY METERS

UAPS-1Ì, UAPS-1ÌG:

• Standard meter module (accuracy class 0,15).
• Voltage unit.
• Current unit.
• Programme control of calibrator and automated meter calibration.

UAPS-1Ì/R:

• UAPS-1Ì (UAPS-1ÌG)
• Table with an electric separation unit.
• Bench to connect  6 three-phase energy meters (on special order).
• Up to 3 benches to connect 6 single-phase energy meters (on special order).

UAPS-1Ì/R calibrator can be additionally equipped with automated calibration programmes and on  special order  with photoreading devices to calibrate induction energy meters. 

TECHNICAL DATA

Quantity	Value
Nominal phase voltages, V	57,7 and 230
Nominal line voltages, V	100 and 400
Working range of phase voltages	0,7-1,2Um
Utmost range	0,8-1,15Unom
Working range of phase currents, À	from 0,001 tî 100,0
Basic percentage  error when setting voltage and current values, %	not more than  ±0,3
Total output power of each phase of the current unit, VÀ	not less than 160
Total output power of each phase of the voltage unit, VÀ	not less than 80
Frequency of  voltage and current signals, Hz	from 47,5 tî 63 (10 discrete values)
Variation limit of phase shift angle  between voltages and currents, degrees	±180
Error when setting phase shift angle, degrees	not more than  ±0,6
Maximum permissible main relative error  when measuring active power and active energy, %	±0,15
Maximum permissible main relative error  when measuring reactive power and reactive energy, %	±0,3
Measurements  (mm) and mass (kg) of:
standard meter module	480õ475õ213
voltage unit	480õ475õ173
current unit	480õ475õ173
electric separation unit (UAPS-1Ì/R)	360õ475õ173 (30)
table (UAPS -1Ì/R)	1570õ754õ1215 (80)
Average error-free running time, h	not less than 5000
Average service life, years	6
Recalibration interval, year	1
Guaranteed service life, months	18

PRINCIPLE OF OPERATION OF CALIBRATORS FOR METROLOGICAL VERIFICATION OF ELECTRICITY METERS

• UAPS-1 calibrator for metrological verification of electricity meters operates under control of IBM PC personal computer (processor frequency 300 ÌHz, RAM 64 Ìb, support for RS-232 (COM-port), video display supporting  800õ600 resolution, OC Win 98/Me)
• Data transmission between the computer and calibrator is carried out via serial digital RS-232 communication interface.
• The calibrator is powered from single-phase 220V AC network.
• Power consumption – not more than 1500 VÀ