Three Phase Meter Test Station (MTS-3050)
TESCO’s MTS-3050 is a single-position, true three-phase meter test board designed to perform meter accuracy and functional testing under a wide range of loading conditions.
It supports full functional testing of AMI/AMR meters, including meter programming, software revision verification, and communications troubleshooting. The system combines three-channel voltage and current drive, digital waveform generation (per phase), an integrated reference standard, and an automated meter socket to support both standard and complex meter testing.
Description
WHAT IS THE MTS-3050 USED FOR?
The MTS-3050 is used to:
- Run standard and complex meter accuracy tests
- Test meters under widely varying loading conditions
- Perform full functional testing of AMI/AMR meters
- Update meter programs
- Verify software revisions for both the meter and communications module
- Troubleshoot communications modules
- Check meters for open or shorted elements
WHY UTILITIES USE THE MTS-3050
Utilities use the MTS-3050 to:
- Perform both accuracy and functional testing on a single system
- Test meters under controlled and varying load conditions
- Verify communications and software operation
- Diagnose meter issues, including open or shorted elements
- Support testing requirements for current and future meter technologies
KEY CAPABILITIES
- Single-position meter testing
- True three-phase voltage and current testing
- Three-phase accuracy test board
- Full functional testing for AMI/AMR meters
- Meter programming and software revision verification
- Communications module troubleshooting
- Detection of open and shorted meter elements
- Digital waveform generators (per phase)
- Integrated reference standard
- Automated meter socket with electronic actuation
- Meter disconnect switch testing
- Keypad and PC software interface
- JSON-based communications protocol for system control
- IR, radio, and PLC communications testing
- PC interface for test sequence selection and test result export
MEASUREMENT ACCURACY
Integrated reference standard measurement accuracy:
- Voltage: ±0.02%
- Current: ±0.02%
- Active Power (Watts): ±0.04%
- Apparent Power (VA): ±0.04%
- Reactive Power (VAR): ±0.04%
- Active Energy (WHrs): ±0.04%
- Apparent Energy (VAHrs): ±0.04%
- Reactive Energy (VARHrs): ±0.04%
Optional reference standard accuracy:
- 0.02% and 0.01% available
WAVEFORM CAPABILITIES
Digital waveform generators (per phase) support:
- Fundamental frequency adjustable from 45 to 60 Hz
- Harmonic waveforms (harmonic indices 1 through 25)
- ANSI C12.20-2015 test waveforms
- Dropped cycle waveforms (1:1, 2:2, 4:4, and combinations where m+n=8)
- Arbitrary waveforms defined by 4096 points representing 8 cycles
- Download of custom harmonic waveforms through PC interface
VOLTAGE AND CURRENT DRIVE
Voltage Drive
- Three-channel output
- 350V (rms) phase-to-neutral
- 600V (848V peak) phase-to-phase
- Adjustment resolution: 0.01V
- Accuracy: 0.5%
- Output power: 100VA at 240V
- Automatic recovery from overloads and short circuits
Current Drive
- Three-channel, fully isolated
- Range: 0.01 to 50A (rms), 70A (peak)
- Adjustment resolution: 0.01A
- Accuracy: 0.5%
- Compliance voltage: 1.0V
- Automatic recovery from fault conditions
METER TESTING FUNCTIONS
The MTS-3050 supports:
- Meter accuracy testing under varying load conditions
- Long-duration load variation testing to simulate brownout and surge conditions
- Harmonic waveform testing
- Meter power on/off cycling
- Phasor distortion testing
- Detection of open and shorted meter elements
COMMUNICATIONS & FUNCTIONAL TESTING
- IR, radio, and PLC communications testing
- Software revision verification for meter and communications module
- Communications module troubleshooting
- Meter program updates
- Power line communications testing using a 240V autotransformer
- Transmission of powerline signals through the unit to the wall power circuit
AUTOMATED METER SOCKET & SYSTEM CONTROL
- Universal socket with automatic closure on insertion
- Four-point detection of meter in place
- Detection of meter bypass in place
- Automatic routing of voltages to correct stabs for multiple meter forms
- Load-side current disconnect
- Electronically actuated socket
- Meter disconnect switch testing via keypad and PC software interface
- Ability to control the board using JSON-based communications protocol
- PC software interface for:
- Selecting test sequences
- Selecting meter elements
- Configuring service types
- Saving and exporting test results
- Optional integration with system of record
Product Documents
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Disclaimer:
TESCO Metering reserves the right to modify product designs, specifications, features, and documentation at any time as part of our continuous improvement process. All information is provided “as is” and may change without prior notice. While TESCO® strives for accuracy, completeness, and technical reliability, customers should verify the latest product details before making purchasing or engineering decisions. For confirmation of current specifications or application suitability, please contact TESCO® directly.