TD3650 Three-phase Energy Meters Verification Device

1. Summary

TD3650 is applied for the verification of new three-phase energy meters. TD3650 supports simultaneous verification of 3 to 16 three-phase energy meters (Three-phase electrical meters, Three-phase smart electricity meters, Three-phase smart IoT electricity meters, etc.) with the same voltage/current range, different meter constant.

2. Features

2.1 Basic Features

• Maximum output capacity: 576 V / 120 A.

• Fundamental frequency: 45 Hz ~ 100 Hz.

• Accuracy: class 0.02 or 0.05.

• Minimum current output: As low as 0.2 mA.

• Auto range: Automatic range switching and load matching.

• Energy measurement: Positive / negative active and reactive energy.

• Harmonic output: The 2nd ~ 63st @ 50 / 60 Hz, Harmonic content / phase are programmable.

• High-order harmonic test: Built in high-order harmonic test schemes. So it automatically superposes the 15fnom to 40fnom sweep signals to the voltage and current loops and reads the data of each harmonic to measure the error offset caused by the high-order harmonic.

• Complex waveform test: Built in square-wave, peaked wave, even harmonics, odd harmonics and other schemes. It also allows users to customize other complex waveforms for influence quantity test.

• DC and even harmonics test: Equipped with TD3410 half wave rectifier box.

• Daily reckoning error test: Built in standard clock tester.

• Automatic patrol inspection: Support automatic patrol inspection.

• Connection: Equipped with special pressure gauge holder.

• Communication: DUT through RS-485 port.

• Energy pulse: Electric and optical pulse sampling ports.

• Multi-position verification platform: Optional 3,6,12,16 positions.

• Mobile control unit: LCD touch screen for value output.

• Professional verification software: Support semi-automatic or fully automatic verification of the DUT, data management and certificate export. The software has the function of single point multiple tests, the test interval can be set, and the error curve can be drawn automatically.

2.2 Optional Features

• Offering compatibility with both single/three-phase: The Potential Transformer Offer compatibility with both single/three-phase (The single-phase energy meters need Manual wiring). Up to 12 test positions.

• Current Transformer: The Current Transformer add the capability to test energy meter without keeping its voltage terminal separate from its current terminal. Up to 12 test positions.

• Auxiliary supply: AC/DC: 100V~240V; It can support the power consumption test of auxiliary power supply circuit and auxiliary power supply voltage change test.

• Power consumption test of voltage circuit: Only one test position is supported.

• Power consumption test of current circuit: Multiple-positions are supported.

• Burden current fast change test: The user can set the duration of ton and toff, as well as the total time for a single test. The current switches at zero crossing and switches off and on within one nominal frequency period. The repetition time of single test was more than 4 hours.

• AC voltage dip and short interruption test: AC Voltage dips and interruptions test supporting voltage circuit power supply.

• Smart electricity meter function test: Cost control function test, Freezing test, Key update test, Parameter update test, The remote control test, Safety certification test, Events recording test, Communication protocol consistency check, etc.

• Fault earthing test: Support fault earthing test. In the case of fault earthing and 10% overvoltage, the electricity meter connected to the isolated distribution network with fault earthing suppressor or star contact by three-phase four-wire connection is examined.

• Standard meter: Class 0.05/0.02 of conventional or harmonic standard electricity meter.

• Harmonic energy: Support harmonic power/measurement accuracy test.

3. Verification Items

4. Specifications

4.1 AC Voltage Output

• Output range: 0 V～264 V, 6-digits display, load capacity: 15VA/ (phase·position)

• Symmetry: Voltage ≤ 0.2%, Phase ≤ 0.5°

• Protective function: Short-circuit protection, Overload protection

4.2 AC Current Output

• Output range: 1 mA～120 A, 6-digits display, load capacity: 30VA/ (phase position)

• Symmetry: Current≤ 0.5%, Phase ≤ 0.5°

• Protective function: Open-circuit protection, Overload protection

4.3 Frequency / Phase

4.4 Power / Energy

• Stability of output power: 0.02% / 2min (Class 0.05)，0.05% / 2min (Class 0.1);

• Measuring range of power/energy: Combination of AC voltage and AC current range ;

• Measuring range of power factor: -1.000 00…0.000 00…1.000 00;

• Standard electric energy pulse output: High frequency pulse output port outputs 60KHz at full range, low frequency pulse output port outputs 6Hz at full range;

• Standard electric energy pulse input: frequency ≤ 200 kHz，voltage：0…3.3 V…24 V;

• Electric energy error display: Auto, resolution is 0.0001%.

4.5 Clock

• Daily reckoning error bounds: ± 0.05 s/d

5. General Specifications

6. Ordering Information