Surge voltage testers – from 3,000 to 50,000 V
Our broad portfolio covers almost all applications for testing wound goods.
The surge test the most effective method for detecting winding short circuits and insulation faults within a winding. No other testing technique provides comparably meaningful results regarding winding and insulation quality.
Thanks to automatic evaluation, our devices are ideal for:
- EOL testing in highly flexible, fast series production
- Tests in the mass market and standard industry
-
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 testing in the laboratory
- admission tests
- Fault analysis in repairs
- Fault analysis in repair and electric motor service and repair
Key facts:
- Surge voltage testers from 3 kV to 50 kV
- Patented evaluation methods
- Patented peak-to-peak measurement method
- Unmatched reliable winding fault detection
-
Various established test methods such as the Error Area Ratio (EAR)
- Extremely fast measurement cycles for shortest cycle times
- The power duo: surge test partial discharge for uncompromising quality
- Patented 50 Hz pulse frequency technology
- The fastest partial discharge test ever
- Test motors and generators from a few watts up to 500 MW
- 2000 A surge current
- 125 joules surge power
- Rise time up to 60 ns
- automatic test method switch-over
- 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 MOTORHEALTH!
For electrical machine manufacturers
For electric motor repair
For maintenance, servicing, and repair
- Unique worldwide – the mobile ALL-IN-ONE testing device
- AutoTest thefastest way to find faults
- Battery operation –Test
- surge test 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
– one housing connection (laminated core motor housing) - Communication with
PC via Bluetooth - The professional model for engine servicing
MTC2 R7
Universal winding testers 6, 12, 15, 30, 40, and 50 kV
MTC2 winding test systems are highly compact, fully automatic, high-end testing devices for a wide variety of wound products in development, production, and testing laboratories.
For production, EOL, automation
For testing laboratories, R&D, approval, certification testing
For repair, maintenance, and service
Surge test
- Ultra-fast 50 measurements per second
- Phase comparison between each other
- Patented peak-to-peak measurement
Partial discharge compliant 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 connections
- Standard: 4
- Optional: 7 and more
MTC3
High-end testing systems for engine production – without limits
MTC3 winding test systems are fully automatic, high-end testing devices for a wide variety of wound products in development, production, and testing laboratories.
For production, EOL, automation
For testing laboratories, R&D, approval, certification testing
- Testing of stators, rotors, transformers, and chokes
- surge test 15 kV
- Fully integrated partial discharge testing in accordance with IEC 61934 and DIN EN 60034-18-41
- Resistance measurement using four-wire technology temperature compensation
- Insulation resistance test with automatic PI measurement
- Inductance testing | LCR inductance measuring bridge
- high voltage test according to VDE standard
- Partial discharge at high voltage AC
- insulation test
- Precise four-wire with temperature compensation down to thespace
- Rotating field test with static probe
- Expansion to up to 150 connections
- Temperature sensor test for 1, 2, 3 … x sensors
Voltage Analyzer
Precise surge test on the winding
For production and testing laboratories.
- Direct voltage measurement on device under test no line-related influences
- 3-channel precision high-frequency probe
- Super fast measurement
- High measurement resolution
- Plus partial discharge measurement with passive or active antenna
- Integrated measuring point switching
- Ideal for demanding tests


Good to know:
The surge test
Where the device under test is device under test .
- within the winding from turn to turn
- from winding to winding
- from phase to phase
- from winding to laminated core
The surge test an"in-depth look into the winding." Neither the high voltage test test methods such as the ohmic Resistance test inductance test can achieve this level of testing depth.
These errors are surge test by the surge test .
- Insufficient insulation distances
- insulation weaknesses
- Insufficient dielectric strength
- incorrect number of turns
- different winding geometry
- enameled copper wire fault
- turn faults
- voltage-dependent winding short circuits
- phase closures
- voltage-dependent phase closures
- body faults
- voltage-dependent ground faults
- layer closures
- voltage-dependent layer closures
- Problems with the laminated core
- Problems with the magnetic core
circuit error...

This is how the surge test works.
In principle, the surge tester generates surge tester high-voltage pulse with a very high edge steepness.
To do this, it charges the surge capacitor integrated in the test device to the desired voltage level. As soon as the TEST VOLTAGE is TEST VOLTAGE , the test device switches the charged capacitor to the winding to be tested via a very fast semiconductor switch. This results in an oscillating circuit consisting of the inductance test object and the charged capacitor. The impulse response at the oscillating circuit is a very steep voltage rise followed by the typical voltage curve in the form of a damped oscillation.
The very rapid voltage jump generates high voltage differences between individual and/or multiple turns within the winding. If there are any weaknesses in the insulation, the brief high voltage difference leads to discharges. These affect the voltage curve of oscillation damped oscillation that it visually deviates from an intact winding.
Using an analysis method SCHLEICH by SCHLEICH and various algorithms, the testing device analyzes the difference between good and bad voltage and current curves. Based on the analyses, the testing device decides fully automatically whether a winding GO (GO) or not OK (n.GO).
This is how the surge test is surge test .
Whether manual, semi-automatic, or fully automatic: with surge voltage testers from SCHLEICH , every test task SCHLEICH be run quickly and efficiently.
All of our testing devices are designed according to the "KISS principle." In other words,"Keep It Simple and Smart." This principle is the guiding principle for all SCHLEICH products.
A manual test is performed by connecting Kelvin clips to device under test.
Semi-automated or fully automated surge voltage testers or surge voltage testing machines provide more provide for the requirements of production facilities. For this purpose, the testers are equipped with a relay switching panel (relay matrix). These surge test switch the surge test to the desired test points.
Depending on the application, test systems of this type have up to 100 test connections.

surge test safety measures during the surge test !
Working with surge test not without risk. Therefore, it is essential to comply with the relevant safety regulations and measures for contact protection.
Inspace repair, it is often unavoidable to work on open, unprotected device under test mandatory contact protection. In production, protective measures such as test hoods, test cabins, light curtains, or barrier chains are typically used.
The requirements for asurge tester.
SCHLEICH surge voltage testers typically have the following features:
- standard-compliant testing
- high slope
- Very fast measurement technology with high resolution
- Fully automatic switch-over the various winding connections of the test object
- fully automated analysis
- patented evaluation method
- Integrated test plan and test result memory
- Development, production, and service – Made in Germany
SCHLEICH are based on over 30 years of experience and pioneering work. From the very beginning, the measurement technology was not analog, but always digital. Only the most modern technologies are used.
How to find the right surge tester.
If you device under test run surge voltage tests on your device under test , a single test device is the right choice for you. It includes the surge test , at no extra cost, always includes insulation resistance testing and PI measurement.
device under test the device under test requires device under test tests, we recommend our combination testers/multifunction testers. These can be supplemented with additional test methods such as partial discharge, high voltage test —plus partial discharge if required—ohmic Resistance test, rotating field test, and other functions. The fully automatic test method switching ensures that no test leads need to be device under test reconnected to device under test during the test.
Thanks to the intuitive and convenient operation of our surge voltage testers, every test is quick, precise, and cost-efficient.
The SCHLEICH – expect more!
Surge voltage testers
- TEST VOLTAGE 3,000 V to 50,000 V
- Expandable with partial discharge testing
- Expandable with additional test 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 determined via the software
Customized testing devices and systems
- Single-function and multifunction testers
- Relay matrices scalable from 2 to 100 terminals
- Complete test workstations
- Automatic EOL workstations
- systems engineering test cell
full-service
- Professional advice with technical expertise
- Careful initial commissioning
- Regular certified calibration
- After-sales support from our service team
- Service by phone, remote maintenance, or on-site
- Customized training courses
- SCHLEICH.CARE.PREMIUM


Do you require personal product advice?
We would be happy to provide you with comprehensive support and advice regarding all our products and services.
Call us or send us an email!

