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MTS-100 Meter Test System

The MTS-100 Meter Test System is a three-phase, high-accuracy calibration system designed for the testing and verification of all types of single-phase and three-phase electronic or inductive active and reactive energy meters.

With a built-in reference meter (class 0.05 or 0.1) and a high-precision power source (up to 120A), it provides a complete modular solution for meter manufacturers, research institutes, utilities, and calibration laboratories.

Model Options

Key Features

  • Class 0.05% or 0.1% accuracy for high reliability in calibration

  • Modular structure: suitable for single/three-phase energy meters

  • 8” TFT screen with friendly user interface

  • Automatic or manual testing of basic error, creeping, starting, deviation

  • Online diagnostics and self-protection for overload, short-circuit, or open-circuit

  • Harmonic output up to 63rd order

  • Supports DLT-645 communication protocol for multifunction meters

  • Stand-alone, PC, or remote control via RS232, Ethernet, WiFi, RS485

  • Auto-calibration schemes with user-defined testing sequences

  • Portable yet powerful system (35 kg, compact housing)

Technical Specifications

AC Voltage Output

  • Range: 100V, 220V, 380V

  • Adjusting Range: 0–120% RG

  • Resolution: 0.01%RG, 0.1%RG, 1%RG, or 10%RG

  • Stability: 0.01%/2min (Class 0.05), 0.02%/2min (Class 0.1)

  • Distortion: ≤0.2% (Non-capacitive load)

  • Max Output Load: 20 VA/phase

  • Accuracy: Class 0.05% or 0.1%

AC Current Output

  • Range: 0.05A, 0.2A, 1A, 5A, 20A, 100A

  • Adjusting Range: 0–120% RG

  • Resolution: 0.01%RG, 0.1%RG, 1%RG, 10%RG

  • Stability: 0.01%/2min (Class 0.05), 0.02%/2min (Class 0.1)

  • Distortion: ≤0.2% (Non-capacitive load)

  • Max Output Load: 120 VA (100A range)

  • Accuracy: Class 0.05% or 0.1%

Power Output

  • Stability: 0.01%/2min (Class 0.05), 0.02%/2min (Class 0.1)

  • Active/Reactive Power Accuracy: 0.05% RG

Phase Output

  • Range: 0°–360°

  • Resolution: 0.01° (steps of 10°, 1°, 0.1°, or 0.01°)

  • Accuracy: ±0.05°

Power Factor Output

  • Range: -1 to +1

  • Resolution: 0.0001

  • Accuracy: 0.0005

Frequency Output

  • Range: 40Hz–70Hz

  • Resolution: 0.001Hz (steps of 1Hz, 0.1Hz, 0.01Hz, or 0.001Hz)

  • Accuracy: ±0.002Hz

Harmonic Setting

  • Order: 2nd–63rd

  • Amplitude: 0–40%

  • Angle: 0°–359.99°

  • Error: ≤±0.1% (2nd–31st), ≤±0.2% (32nd–63rd)

Energy Error Measurement

  • Active Energy Basic Error: ±0.05% RD or ±0.1% RD (depending on class)

  • Reactive Energy Basic Error: ±0.1% RD or ±0.2% RD (depending on class)

  • Input Pulse: 3 channels active, 3 channels reactive

Other Parameters

  • Power Supply: 90–265 VAC/DC, 50–60Hz

  • Power Consumption: 50–1000 VA

  • Operating Temp: 20°C–30°C, RH ≤85%

  • Storage Temp: -20°C–50°C

  • Dimensions: 600 × 440 × 266 mm

  • Weight: 35 kg

Main Functions

  • Calibration of single/three-phase electronic or inductive meters

  • Automatic/manual testing of basic error, creeping, starting, deviation

  • Variable influence tests: voltage, frequency, harmonics, reverse phase sequence, voltage unbalance

  • Special energy meter type tests: phase triggering, pulse train triggering

  • Multifunction meter tests: demand indication error, demand cycle error, time slot switching error, multi-tariff energy error

  • With OCXO, capable of detecting daily error of energy meters

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