1. Summary
TD3500 is applied for verification of single-phase energy meters. It mainly consists of single-phase precision standard power source, verification platform, measurement and control platform, PC(optional) and verification software. TD3500 supports simultaneous verification of 6 ~ 24 single-phase electricity/mechanical energy meters with the same voltage/current range, different meter constant.
2. Verification Items
• Test of no-load
• Starting current test
• Intrinsic error
• Meter constant
• Daily reckoning error
3. Features
3.1 Basic Features
• Maximum output capacity: 264 V / 120 A.
• Fundamental frequency: 45 Hz ~ 100 Hz.
• Accuracy: Class 0.05 or Class 0.1.
• Minimum current output: As low as 1 mA.
• Auto range: Automatic range switching and load matching.
• Energy measurement: Positive / negative active and reactive energy.
• 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.
• Multiple-position test: Optional 6,12,16,24 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.
3.2 Optional Features
• Harmonic output: Loadable 2nd ~21st harmonic @50 Hz / 60 Hz, harmonic content and phase are adjustable.
• Standard meter: Optional standard meter with Accuracy Class 0.05 / Class 0.02.
4. Specifications
4.1 Three Phase Voltage Output
Range | Resolution | Short-term Stability ( % / min ) | Accuracy ±(ppm of reading + ppm of range) [1] | Distortion Factor ( % ) | ||
Class 0.05 | Class 0.1 | Class 0.05 | Class 0.1 | |||
220 V | 1 mV | 0.01 | 0.02 | 200 + 50 | 300 + 200 | < 0.3 |
Note [1] : (ppm = parts per million) (e.g., 10ppm = 0.001%). | ||||||
• Output range: 0 V～264 V, 6-digits display, Load capacity: 15VA/ (phase · position)
• Protective function: Short-circuit protection, Overload protection
4.2 Three Phase Current Output
Range | Resolution | Short-term Stability ( % / min ) | Accuracy ± (ppm of reading + ppm of range) | Distortion Factor ( % ) | ||
Class 0.05 | Class 0.1 | Class 0.05 | Class 0.1 | |||
10 mA | 0.1 μA | 0.02 | 0.04 | 300 + 200 | 500 + 300 | < 0.5 |
20 mA | 0.1 μA | 0.02 | 0.04 | 300 + 200 | 500 + 300 | < 0.5 |
50 mA | 0.1 μA | 0.02 | 0.04 | 200 + 50 | 300 + 200 | < 0.5 |
100 mA | 1 μA | 0.01 | 0.02 | 200 + 50 | 300 + 200 | < 0.5 |
200 mA | 1 μA | 0.01 | 0.02 | 200 + 50 | 300 + 200 | < 0.5 |
500 mA | 1 μA | 0.01 | 0.02 | 200 + 50 | 300 + 200 | < 0.5 |
1 A | 10 μA | 0.01 | 0.02 | 200 + 50 | 300 + 200 | < 0.5 |
2 A | 10 μA | 0.01 | 0.02 | 200 + 50 | 300 + 200 | < 0.5 |
5 A | 10 μA | 0.01 | 0.02 | 200 + 50 | 300 + 200 | < 0.5 |
10 A | 100 μA | 0.01 | 0.02 | 200 + 50 | 300 + 200 | < 0.5 |
20 A | 100 μA | 0.01 | 0.02 | 200 + 50 | 300 + 200 | < 0.5 |
50 A | 100 μA | 0.01 | 0.02 | 200 + 50 | 300 + 200 | < 0.5 |
100 A | 1 mA | 0.01 | 0.02 | 200 + 50 | 300 + 200 | < 0.5 |
• Output range: 1 mA～120 A, 6-digits display, load capacity: 30VA/ (phase · position)
• Protective function: Open-circuit protection, Overload protection
4.3 Frequency / Phase
Accuracy | Class 0.05 | Class 0.1 | |
Frequency | Measuring Range | 45 Hz～100 Hz | 45 Hz～100 Hz |
Minimum Resolution | 0.000 01 Hz | 0.000 01 Hz | |
Accuracy | ± 0.005%*RD | ± 0.005%*RD | |
Phase （I ≥ 50mA） | Measuring Range | 0～360° | 0～360° |
Minimum Resolution | 0.000 1° | 0.000 1° | |
Accuracy | ± 0.012° | ± 0.024° | |
4.4 Power/ Energy
Current Range | Power Factor | Accuracy ± (% of reading) | |
Class 0.05 | Class 0.1 | ||
50 mA ≤ I ≤ 120 A | 0.5L~1~0.5C | 0.05%*RD | 0.1%*RD |
10 mA ≤ I < 50 mA | 1 | 0.05%*RD | 0.1%*RD |
0.5L~1~0.5C | 0.08%*RD | 0.15%*RD | |
1 mA ≤ I < 10 mA | 1 | 0.08%*RD | 0.15%*RD |
0.5L~1~0.5C | 0.15%*RD | 0.3%*RD | |
• Stability of output power: 0.02% / 2min (Class 0.05)，0.05% / 2min (Class 0.1);
• Measuring range of P/E: 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 limit: ± 0.05 s/d
5. General Specifications
Power supply | Single phase AC(220 ± 22)V, (50 ± 2)Hz | ||||
Warm up time | 30min | ||||
Temperature performance | Operating temperature: 5°C~45°C; Storage temperature: -10°C~55°C. | ||||
Humidity performance | Operating humidity: < 80% @ 30°C，< 70% @ 40°C, < 40% @ 50°C; Storage humidity: (20%~80%) R·H, no condensation. | ||||
Communication interface | RS232, RS485, LAN | ||||
Dimensions of test bench （L*W *table H / total H, mm） | Position number | 6 positions | 12 positions | 16 positions | 24 positions |
Manual wiring | 1350*750*750/1415 | —— | —— | —— | |
Crimp wiring | 1350*750*750/1415 | 1240*750*600/1782 | 1590*750*600/1782 | 2290*750*600/1782 | |
Dimensions of computer desk （L×W×H, mm） | No standard meter | 1000×800×750 | |||
Standard meter | 1500×800×750 | ||||
6. Ordering Information
| ||
Special Customized Function Selection Table | ||
Tick | Option Function | Description |
Harmonic Output | 2nd~21th | |
Standard Meter | Class 0.05 | |
Other Requirements | ||
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