Electric testing system

for single- and 3-phase equipmentmobileautomatic

Overview
The power consumption of household appliances is a key factor for end users and a critical parameter for energy-efficiency classification. Determining the energy-efficiency rating requires comprehensive, standardised, long-term measurements that are automated, traceable and documented.

Industry
Household appliances

Task
Develop an automated long-term measurement system to determine energy-efficiency classes in compliance with applicable standards. Results must be clearly documented and traceable. The concept must be future-proof and meet high metrology requirements, including new measurement needs from evolving technologies (e.g. LED) and very low standby current detection.

Solution
PC-controlled test system using laptops for control and data acquisition. High-precision electrical instruments record electrical parameters. The installation is configured as a 3-phase layout to support high-power appliances; a programmable 3-phase source supplies the device under test. In addition to electrical measurements, 50 channels are provided for temperature sensing. An emergency power supply ensures uninterrupted long-term data logging. Hardware and software are customisable to customer requirements.

Benefits

• Automatic saving of all test data to the specified location/database during network operation
• Long service life and service-friendly design
• All values and settings configurable via software
• Workplace safety in accordance with EN 50191
• Customised hardware and software solution
• Supports single-phase and 3-phase DUTs
• Power range from a few mW (standby) to several kW (nominal)
• High measurement accuracy
• PC-controlled with laptops for flexible deployment
• Fully automatic long-term testing without monitoring personnel

Technical data

• Function test: 1 / 3-phase
• Controlled output voltage
• Measurement of nominal power and standby consumption (from 0.1 mW up to kW ranges)
• Temperature measurements: PT100, thermocouples and similar sensors
• Measurements via mains supply analysers: P, U, F, VA, cos φ
• Programmable 3-phase power source
• 50 temperature measurement channels
• Emergency power supply for uninterrupted long-term recording

Characteristics / technical specifications

• Automated, standards-compliant long-term energy-efficiency measurements
• PC-controlled system (laptops) for control and data acquisition
• High-precision electrical measuring instruments for recording electrical parameters
• 3-phase layout and programmable 3-phase source for DUT supply
• Measurement range: from a few mW (standby) up to several kW (nominal)
• Standby power measurement capability down to 0.1 mW
• 50 channels available for temperature measurements (PT100 / thermocouples)
• Measurement parameters: active power (P), voltage (U), frequency (F), apparent power (VA), power factor (cos φ)
• Network operation with automatic data saving to database/location
• Emergency power supply to guarantee continuous data logging
• Customisable hardware and software; settings and values configurable via software
• Designed to meet highest metrology requirements and to accommodate future measurement needs