Your local contact:Surge voltage testers – from 3,000 to 50,000 V
Our broad portfolio covers almost all applications for testing wound materials.
Impulse voltage testing is the most effective method for detecting short circuits and insulation faults within a winding. No other testing technique provides comparably informative results regarding winding and insulation quality.
Thanks to automatic evaluation, our devices are ideal for:
- EOL testing in highly flexible, fast-paced series production
- Testing in the mass market and standard industry
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High-precision testing of electric drives for automotive applications
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Testing of special electric motors, such as those used in satellites
- Quality checks in the laboratory
- Entrance exams
- Fault analysis in repair
- Fault analysis in repair and electrical machine construction
Key Facts:
- Surge voltage testers from 3 kV to 50 kV
- Patented evaluation methods
- Patented peak-to-peak measurement method
- Unrivaled reliable winding short circuit detection
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Various established testing methods such as the Error Area Ratio (EAR)
- Extremely fast measurement cycles for the shortest possible cycle times
- The power duo: surge voltage + partial discharge for uncompromising quality
- Patented 50 Hz pulse frequency technology
- The fastest partial discharge test ever
- Testing of motors and generators from a few watts to 500 MW
- 2000 A surge current
- 125 joules of impact energy
- Rise time up to 60 ns
- Automatic test method switching
- Any number of winding and temperature connections
- Dual-channel safety function – compliant with PLe / SIL3 (MTC2, MTC3)
MotorAnalyzer3
The mobile all-in-one professional model for your engine service
CHECK YOUR MOTOR'S HEALTH!
For electrical machine manufacturers
For electric motor repair
For maintenance, servicing, and support
- Unique worldwide – the mobile ALL-IN-ONE testing device
- AutoTest – the fastest troubleshooting
- Battery operation – check nonstop
- Impulse voltage up to 3 kV | 0.45 joules
- High voltage DC up to 6 kV
- Insulation up to 500 GΩ
- Polarization Index and DAR
- LCR measurement
- Automatic measurement between the four relevant connection points of the three-phase motor
– three winding connections
– a housing connection (sheet metal package or motor housing) - Communication with
«» PC via Bluetooth - The professional model for engine service
MTC2 R7
Universal winding testers: 6, 12, 15, 30, 40, and 50 kV
MTC2 winding test systems are highly compact, fully automatic, high-end test devices designed for a wide variety of wound products in development, production, and testing laboratories.
For production, EOL, and automation
For test labs, R&D, approval, and regulatory testing
For repair, maintenance, and service
peak voltage
- Ultra-fast 50 measurements per second
- Comparison of phases with one another
- Patented peak-to-peak measurement
Partial discharge in accordance with DIN EN 60034-18:2014
- Passive or active antenna
- Wired decoupling
Ohmic resistance
- Winding
- temperature sensor
Insulation resistance
- IR
- PI
- DAR
High-voltage AC (optional)
Test terminals
- Default: 4
- Optional: 7 or more
MTC3 R2
High-end testing systems for engine production – no limits
MTC3 winding test systems are fully automatic, high-end testing devices designed for a wide variety of wound products in development, production, and testing laboratories.
For production, EOL, automation
For test labs, R&D, approval, regulatory testing
- Testing of stators, rotors, transformers, and chokes
- Surge voltage testing up to 15 kV
- Fully integrated partial discharge testing in accordance with IEC 61934 and DIN EN 60034-18-41
- Resistance measurement using the four-wire method with temperature compensation
- Insulation resistance test with automatic PI measurement
- Inductance Test | LCR Inductance Measurement Bridge
- AC High-Voltage Test in Accordance with the VDE Standard
- Partial discharge in high-voltage AC systems
- DC Insulation Test
- Precise four-wire resistance measurement with temperature compensation down to the µΩ range
- Rotating-field test with a static probe
- Expandable to up to 150 ports
- Temperature sensor test for 1, 2, 3 … x sensors
Voltage Analyzer
Precise surge voltage measurement directly at the winding
For production and testing laboratories.
- Direct voltage measurement on the test object – no cable-related interference
- 3-channel precision high-frequency probe
- Super-fast measurement
- High measurement resolution
- Plus partial discharge measurement with a passive or active antenna
- Integrated metering point switching
- Ideal for demanding tests
Good to know:
The impulse voltage test
Where testing is performed on the test object.
- within the winding, from turn to turn
- from coil to coil
- from phase to phase
- from the winding to the laminated core
The surge voltage test is the "deep look into the winding" . Neither high-voltage testing nor testing methods such as ohmic resistance testing or inductance testing can achieve such a depth of testing.
These faults are detected by the impulse voltage test.
- Insulation clearances are too small
- Weaknesses in insulation
- Insufficient dielectric strength
- incorrect number of turns
- different winding geometry
- Defects in enameled copper wire
- winding closures
- voltage-dependent winding connections
- Phase closures
- voltage-dependent phase faults
- Body closures
- voltage-dependent body connections
- Layer connections
- voltage-dependent layer connections
- Problems with the sheet metal package
- Problems with the magnetic core
- Circuit error
…
This is how impulse voltage works.
In principle, the impulse voltage tester generates a high-voltage pulse with a very high slope.
To do this, it charges the impulse capacitor integrated into the test device to the desired voltage level. As soon as the test voltage is reached, the test device uses a very fast semiconductor switch to connect the charged capacitor to the winding under test. This creates a resonant circuit consisting of the inductance of the device under test and the charged capacitor. The impulse response of the resonant circuit is a very steep voltage rise followed by the typical voltage waveform in the form of a damped oscillation.
The very rapid voltage change generates high voltage differences between individual and/or multiple turns within the winding. If insulation weaknesses are present, this brief high voltage difference leads to discharges. These discharges affect the voltage profile of the damped oscillation in such a way that it visually deviates from that of an intact winding.
Using a SCHLEICH-patented analysis method and various algorithms, the test device analyzes the difference between good and bad voltage and current curves. Based on these analyses, the test device automatically decides whether a winding is OK (iO) or not OK (niO).
This is how the impulse voltage test is performed.
Whether manual, semi-automatic or fully automatic: with impulse voltage testers from SCHLEICH, every testing task can be carried out quickly and efficiently.
Our testing equipment is all designed according to the "KISS principle," which stands for " Keep It Simple and Smart. " This principle serves as a guiding principle for all SCHLEICH products.
Manual testing is performed by connecting Kelvin clamps to the object under test.
For the requirements of production facilities, semi- or fully automated surge voltage testers or surge voltage test machines are more suitable. These testers are equipped with a relay switching module (relay matrix). This module automatically switches the surge voltage to the desired test points.
Testing systems of this type have up to 100 test connections, depending on the application.
Observe safety precautions during the surge voltage test!
Working with surge voltage is not without risk. Therefore, it is essential to strictly adhere to the relevant safety regulations and measures for protection against electric shock.
In R&D and repair work, working on open, unprotected test objects without mandatory contact protection is often unavoidable. In production, protective measures such as test hoods, test booths, light curtains, or barrier chains are typically used.
The requirements for a standard impulse voltage tester.
SCHLEICH impulse voltage testers typically have the following features:
- standard-compliant testing
- high voltage gradient
- High-speed, high-resolution measurement technology
- Fully automatic switching between the various winding terminals of the test object
- fully automated analysis
- patented evaluation method
- integrated test plan and test result storage
- Development, Production, and Service – Made in Germany
SCHLEICH impulse voltage testers are based on over 30 years of experience and pioneering work. From the very beginning, the measurement technology has always been digital, not analog. State-of-the-art technologies are always used.
Here's how to find the right surge voltage tester.
If you only intend to perform impulse voltage tests on your test object, a dedicated test device is the right choice. It includes impulse voltage testing and, at no extra cost, also insulation resistance testing and PI measurement.
If the test object requires additional tests, we recommend our combination testers/multifunction testers. These allow for the integration of supplementary test methods such as partial discharge, AC high-voltage testing (with partial discharge if required), ohmic resistance testing, phase sequence testing, and other functions. The fully automatic test method switching ensures that no test leads need to be manually reconnected during testing.
Thanks to the intuitive and convenient operation of our impulse voltage testers, every test is carried out quickly, precisely and cost-effectively.
The SCHLEICH product portfolio – expect more!
Surge voltage testers
- Test voltage from 3,000 V to 50,000 V
- Expandable with partial discharge testing
- Expandable with additional testing methods such as resistance, high voltage AC, etc.
- Interfaces such as RS 232, Ethernet / LAN, USB for PC communication
- 24 V digital I/O for PLC communication
- Expandable to Industrial Ethernet and fieldbus systems
- Unlimited storage space for test plans and test results
- All parameters are set via the software
Custom testing equipment and systems
- Single-function and multifunction testers
- Relay matrices scalable from 2 to 100 terminals
- Complete testing stations
- Automated EOL workstations
- Plant construction including test cell
Comprehensive service
- Professional consulting backed by expert knowledge
- Careful initial startup
- Regular certified calibration
- After-sales support from our service team
- Service by phone, via remote support, or on-site
- Customized training programs
- SCHLEICH.CARE.PREMIUM
Do you need personalized product advice?
We are happy to provide you with comprehensive support and advice on all our products and services.
Give us a call or send us an email!