Three Phase Close-Link Kwh/Electric/Energy Meter Test Bench with Isolated CT

Product Name: Three Phase Close-link Kwh/Electric/Energy Meter Test Bench with Isolated CT Model NO.: KP-S3000 Customized: Customized Certification: ISO Type: Energy Meter Theory: Electronic Meter Electric Equipment: Three-phase Three-wire Usage: Multi-Functional Energy Meter, Watt-Hour Meter, Meter for Industry and Home Use, Standard Electric Energy Meter, Prepayment Meter, Reactive Energy Meter, Multi-rate Watt-hour Meters, Maximum Demand Meter Installation: Direct Connected Display: Indicator MOQ: 1 PC Output Voltage: 3 X 57.7/100V/220V/380V Adjustment Range: 0 to 120% Harmonic Output: 2ND to 21th Output Current: 3 X 0.1A to 200A Phase Adjustment: 0 to 359.9 Degree Output Waveform Distortion: Voltage and Current < 0.05% Stable: <0.05% (180s) Voltage Output Capacity: >15va Per Postion Current Output Capacity: >25va Per Postion Transport Package: Wooden Case Export Packing Specification: ISO Origin: Zhejiang, China Product Description 1 Three-phase Energy Meter Test System (MTS)First steps in the production of fully electronic automatic electricity meter calibrationsystems were made 10 years ago by KAIPU. The system described and offered herecomprises components based on most modern technologies. It therefore combines longterm experience in this field with the application of state of the art technology.The recentlydeveloped new software is based on KAIPU 's historical experience in providing varioustesting solution to numbers of manufacturers, Utility companies, Metrological institutes etc.1.1 General featuresThe offered universal meter testing equipment is designed for the simultaneous testing,adjustment and certification of meters.The following electricity meters of the accuracy classes 0.2, 0.5, 1 and 2 can be tested:*2 wire-, 3 wire- and 4 wire meters for active and reactive energy(true and cross-connected),The test system incorporates a completely electronic test current- and test voltagegeneration. The working standard is a wide range substandard meter directly connected tothe test circuit.A PC system controls the test system and supervises the test procedure. The actualvalues of test voltage and -current and the errors of the meters under test are displayed onthe monitor. The errors of the meters are indicated additionally on error displays at eachmeasuring position.The user software supports the following operation modes:*Creation of type table and test tables (sequences). Editing of already prepared testsequences and type tables also possible*Manual testing of meter, in this case test voltage, current, PF, Frequency, Phasesequence, measurement mode can be selected and set for the testing. Operator will beallowed to input meter constant to check the % error of meter under test. Error results canbe directly printout*Automatic certification, using type- and test tables*Results of Automatic testing, Storage, printout, formatting etc.The meters to be tested will be suspended on a stationary meter rackThe basic version of the test system consists of the following components:*1 power supply unit , designed as 19"-cabinet with the modules for testvoltage and test current generation as well as the reference standard,*1 test tables with meter test rack for the simultaneous testing equipped with:Scanning devices for rotor mark detection of inductive type meters and LED detection ofelectronic meters,* IR-data heads *1 PC system with user software*Central error calculator * Individual error displaysThe test system will be connected directly to the unsterilized mains:220 V (Phase to Neutral) + 10 % -- 15 %, 50 Hz ±2 %1.2 Power supply unitTest current and -voltage are synthetically generated in a Fully Digital Electronic PowerSource by the means of a 6-channel frequency generator (extendable to 8 channels) andresonant Switch Mode Amplifiers.These Amplifiers have the following Characteristics:*High Efficiency*DDC control by signal processors,*PF compensation of the mains connection according To EN 60555 / IEC 555*High stability at inductive-, capacitive-and non-linear loads*very good quality of the output signals, low THD*Electronically Protected against overload and short circuit*Designed as 19"-unit, digital controlled by fiber-optics connection.*Diagnostic features in amplifier to detect the problemThe Frequency Generator allows in combination with the wide range amplifiers thesuperposition of harmonics.The Closed Loop Control conception of the frequency generator guarantees a highstability and precision of test voltage and test current, in absolute value as well as in phaseangle. The deviation between the selected test value and the actual value is MonitoredContinuously. Deviations beyond the previously selected close tolerance will be indicatedas error message. This technology of inherent calibration guarantees the highly precisegeneration of the output settings under all load conditions.A malfunction will be indicated by acoustic- and optic signal.1.2.1 Frequency Waveform GeneratorThe waveform generator is the central unit of the synthetic waveform generation. Itgenerates the set points for the digital control of the power amplifier units, carries out theclosed-loop control of the test settings and controls changeover operations during the testprocedure. The output settings per phase are generated with a resolution of 3600 samplesper period and 16 bit in amplitude.The Technical Data of the Frequency Generator are:Test circuit frequency computer controlled adjustable to :*mains synchronized operation f =50 or 60 Hz,*quartz controlled operation f = 45.00 to 65 Hz,adjustable in steps to 0.01 Hz.Test voltage circuit Selectable in the range of*40 to 380 V (phase-neutral)*70 to 658 V (phase-phase)*Individual phase can be controlledTest current circuit Selectable in the range of*1 mA to 120 A*Individual phase can be controlledPhase positionadjustmentto any power factorcos φ / sin φ = 0.000 to 1.000 in allcomputer controlled.Symmetrical/UnsymmetricalTest voltage and current can be freely selectable assymmetrical / unsymmetrical,balance/unbalance systemSuperposition ofharmonics*In the range 2nd ... 21th harmonic to each testvoltage- and test current phase individually. Twodifferent waveform/channel*Magnitude of each harmonic is adjustable over 0 ...40 % and phase angle w.r.t to the fundamentalwave1.2.2 Test voltage amplifierThe three - phase test voltage amplifier is designed for generation of desired testparameter, based on the command received from frequency generatorVoltage range: 40 to 380 V (phase-neutral) 70 to 658 V (phase-phase)Accuracy of the test setting amplitude: 0.05 %Accuracy of the test setting phaseadjustment:0.01°Stability of the output settings: < 0.05Distortion factor: < 0.5 %Superposition of harmonics 2 to. 21. HarmonicsOutput power in the test voltage circuit: max. 3 x 2000 VA.Protection:Mains is protected by Fuse and outputcircuit is Protected against shortcircuit/overloadCommunication:send/receive signal throughfiber optic cables.Failure Diagnosis feature:Amplifier has built in self-diagnosisfeatures, which can be activated todetect the fault inside the amplifier1.2.3 Test current amplifierEach of the 3 single-phase test current amplifiers is designed for:Current range: 1mA -120AAccuracy of the test setting amplitude: 0.05 %Accuracy of the test setting phaseadjustment:0.01°Stability of the output settings: < 0.05Distortion factor: < 0.5 %Superposition of harmonics 2. ... 21. HarmonicsOutput power in the test current circuit: max. 1500 VA per phaseProtection:Mains is protected by Fuse and outputcircuit is Protected against opencircuit/overloadCommunication send/receive signal throughfiber optic cables.Failure Diagnosis feature Amplifier has built in self-diagnosisfeatures, which can be activated todetect the fault inside the amplifier