1. Summary
TD3600 is a dedicated verification device for the initial and subsequent verification of three-phase AC energy meters. It mainly consists of a three-phase precision standard power source, a multi-position meter test bench, a control console, an optional computer, and dedicated software. Available in two accuracy classes—0.02 and 0.05—it is based on the high stability and accuracy of the three-phase standard power source, and works in conjunction with specialized computer software to support fully automatic simultaneous verification of 3 to 16 electromechanical or electronic three-phase energy meters with identical voltage/current ranges but different meter constants.
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: 576 V / 120 A, with a fundamental frequency range of 45 Hz to 100 Hz.
Accuracy: Class 0.02, 0.05 optional
Minimum Current Output: As low as 0.2 mA, meeting the starting test requirements for Class D/E meters with Imax of 1.2 A.
Three-Phase Power Adjustment: Supports both unified and individual phase adjustment for voltage and current outputs, enabling flexible testing. Features fully automatic range switching and automatic load matching.
Multifunctional Energy Measurement: Capable of measuring forward and reverse active energy, as well as reactive energy using multiple metering methods.
Daily Timing Error Test: Built-in standard time clock tester with a timing error limit of ±0.05 s/day.
Automatic Inspection: Supports automated inspection and automatic short-circuiting of meter positions without connected meters.
Clamping-Type Wiring: Equipped with dedicated meter clamps compatible with State Grid and Southern Grid standard meter shapes, enabling fast and convenient testing. Non-standard meters can be connected via adjustable clamps or manual wiring.
Communication Interface: Supports communication with tested meters via RS-485 interface, compatible with DL/T 645 and 698 protocols.
Energy Pulse Sampling: Provides both electrical pulse and optical pulse sampling ports.
Management Platform Interface: Compliant with the data upload interface specifications of the State Grid and Southern Grid metering production management platforms.
Multi-Position Test Bench: Available in 3/6/12/16 meter positions, with integrated interfaces for power output, energy pulse, and communication.
Mobile Measurement & Control Console: LCD touchscreen enables real-time observation and control of output values, facilitating manual meter testing.
Dedicated Calibration Software: Supports semi-automatic or fully automatic calibration, data management, and certificate export. Features include multi-point repeat testing, configurable test intervals, and automatic error curve plotting.
Resume from Breakpoint: After power interruption or reboot, the software resumes testing from the last measured point.
High Reliability: Output channels are well protected electrically, with built-in fault detection, recovery functions, and high maintainability.
3.2 Optional Features
Offering compatibility with both single-phase and three-phase: The Potential Transformer Offer compatibility with both single-phase and three-phase. 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.
Harmonic output function: The 2nd ~ 21st @ 50 Hz / 60 Hz, harmonic content and phase are programmable.
Standard meter: Class 0.05 or 0.02 optional.
Bluetooth (Optional): Supports Bluetooth communication with master-slave modes, enabling one-to-one Bluetooth connection with the meter under test.
Computer and Desk: Designed to accommodate a computer, printer, reference meter, etc., with customizable desk dimensions available upon request.
4. Specifications
4.1 AC Voltage Output
Range | Resolution | Short-term Stability ( % / min ) | Accuracy ± (ppm of reading + ppm of range) [1] | Distortion Factor ( % ) | ||
Class 0.05 | Class 0.02 | Class 0.05 | Class 0.02 | |||
60 V | 0.1 mV | 0.01 | 0.005 | 200 + 50 | 60 + 40 | < 0.3 |
120 V | 1 mV | 0.01 | 0.005 | 200 + 50 | 60 + 40 | < 0.3 |
240 V | 1 mV | 0.01 | 0.005 | 200 + 50 | 60 + 40 | < 0.3 |
480 V | 1 mV | 0.01 | 0.005 | 200 + 50 | 60 + 40 | < 0.3 |
Note [1] : (ppm = parts per million) (e.g., 10ppm = 0.001%). | ||||||
• Output range: 6 V～576 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
Range | Resolution | Short-term Stability ( % / min ) | Accuracy ±(ppm of reading + ppm of range) | Distortion Factor ( % ) | ||
Class 0.05 | Class 0.02 | Class 0.05 | Class 0.02 | |||
5 mA | 10 nA | 0.03 | 0.02 | 400 + 300 | 240 + 160 | < 1 |
10 mA | 0.1 μA | 0.02 | 0.01 | 300 + 200 | 120 + 80 | < 0.5 |
20 mA | 0.1 μA | 0.02 | 0.01 | 300 + 200 | 120 + 80 | < 0.5 |
50 mA | 0.1 μA | 0.02 | 0.01 | 200 + 50 | 60 + 40 | < 0.5 |
100 mA | 1 μA | 0.01 | 0.005 | 200 + 50 | 60 + 40 | < 0.5 |
200 mA | 1 μA | 0.01 | 0.005 | 200 + 50 | 60 + 40 | < 0.5 |
500 mA | 1 μA | 0.01 | 0.005 | 200 + 50 | 60 + 40 | < 0.5 |
1 A | 10 μA | 0.01 | 0.005 | 200 + 50 | 60 + 40 | < 0.5 |
2 A | 10 μA | 0.01 | 0.005 | 200 + 50 | 60 + 40 | < 0.5 |
5 A | 10 μA | 0.01 | 0.005 | 200 + 50 | 60 + 40 | < 0.5 |
10 A | 100 μA | 0.01 | 0.005 | 200 + 50 | 60 + 40 | < 0.5 |
20 A | 100 μA | 0.01 | 0.005 | 200 + 50 | 60 + 40 | < 0.5 |
50 A | 100 μA | 0.01 | 0.005 | 200 + 50 | 60 + 40 | < 0.5 |
100 A | 1 mA | 0.01 | 0.005 | 200 + 50 | 60 + 40 | < 0.5 |
• Output range: 0.2 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
Accuracy | Class 0.05 | Class 0.02 | |
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° | ± 0.006° | |
4.4 Power / Electrical energy
Voltage range | Current range | Power factor | Accuracy ± (% of reading) | |
Class 0.05 | Class 0.02 | |||
30 V ≤ U ≤ 480 V | 50 mA ≤ I ≤120 A | 0.5L~1~0.5C | 0.05%×RD | 0.02%×RD |
10 mA ≤ I < 50 mA | 1 | 0.05%×RD | 0.02%×RD 0.04%×RD | |
0.5L~1~0.5C | 0.08%×RD | |||
3 mA ≤ I < 10 mA | 1 | 0.08%×RD | 0.04%×RD | |
0.5L~1~0.5C | 0.15%×RD | 0.08%×RD | ||
0.2 mA ≤ I < 3 mA | 1 | 0.08%×RD×3mA/I | 0.04%×RD×3mA/I | |
• Output power stability: 0.02% / 2min (Class 0.05), 0.01% / 2min (Class 0.02)
• Power/electric energy Measuring range: The combination of AC voltage and current range
• Power factor Measuring range: -1.000 00…0.000 00…1.000 00；
• Standard electric energy pulse output: High frequency pulse output port outputs 60 kHz at full range, low frequency pulse output port outputs 6 Hz 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
Power Supply | AC ( 220 ± 22 ) V, ( 50 ± 2 ) Hz | ||||
Warm Up Time | 30 min | ||||
Temperature Performance | Storage temperature: 5°C~45°C Operating temperature: -10°C~55°C | ||||
Humidity Performance | Operating humidity: < 80% @ 30°C, < 70% @ 40°C, < 40% @ 50°C Storage humidity: (20%~80%) R·H, non-condensing | ||||
Communication Interface | RS232, RS485, LAN | ||||
Dimensions of Test Bench （L*W *table H / total H, mm） | Position Number | 3 Positions | 6 Positions | 12 Positions | 16 Positions |
Manual Wiring | 1350*800*750/1140 | 1950*800*750/1140 | —— | —— | |
Manual Connect | 1350*750*750/1395 | 1850*750*750/1395 | 1830*750*610/1765 | 2350*750*610/1765 | |
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 | Optional Function | Description |
Manual Wiring | The default option is Crimping wiring (with meter rack) , Manual wiring is optional. | |
Harmonic Output | 2nd~21th harmonic | |
Offering Compatibility with Both Single-phase and Three-phase | Up to 12 test positions | |
Current Transformer | Up to 12 test positions | |
Standard Meter | Class 0.05 / 0.02 | |
Other Requirements | ||
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