Your local contact:Surge Testers – from 3,000 to 50,000 V
Our broad portfolio covers nearly all applications for testing winding goods.
The surge test is the most effective method for detecting turn-to-turn faults and insulation defects within a winding. No other test technique provides comparably meaningful results regarding winding and insulation quality.
Thanks to automatic evaluation, our devices are ideal for:
- EOL Tests in highly flexible, fast series production
- Tests in the mass market and standard industry
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High-precision tests of electric drives for automotive applications
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Test of special electric motors, such as the electric motors used in satellites
- Quality tests in the laboratory
- Approval tests
- Fault analysis in repair
- Fault analysis in repair and electric motor service and repair
Key Facts:
- Surge testers from 3 kV to 50 kV
- Patented evaluation methods
- Patented Peak-to-Peak Measurement Method
- Unrivaled reliable turn-to-turn fault detection
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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 of Motors and Generators from a few watts to 500 MW
- 2000 A surge current
- 125 Joule surge power
- Rise time up to 60 ns
- automatic test method switch-over
- Any number of winding and temperature Connections
- Two-channel safety function – compliant with PLe / SIL3 (MTC2, MTC3)
MotorAnalyzer3
The mobile ALL-IN-ONE professional model for your Motor service
CHECK YOUR MOTOR'S HEALTH!
For electric motor service and repair
For electric motor repair
For maintenance, servicing, and service
- Globally unique – the mobile ALL-IN-ONE test device
- AutoTest – the fastest fault detection
- Battery operation – non-stop testing
- Surge test up to 3 kV | 0.45 Joule
- DC high voltage 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 or Motor housing) - Communication with
«» PC via Bluetooth - The professional model for Motor service
MTC2 R7
Universal winding Test devices 6, 12, 15, 30, 40 and 50 kV
MTC2 winding Test systems are very compact, fully automatic high-end Test devices for a wide variety of winding goods in development, production, and Test laboratory.
For production, EOL, automation
For test laboratory, R&D, approval, certification tests
For repair, maintenance, and service
surge test
- Ultra-fast 50 measurements per second
- Phase comparison between phases
- Patented peak-to-peak measurement
Partial discharge compliant with DIN EN 60034-18:2014
- Passive or active antenna
- Conducted coupling
ohmic resistance
- Winding
- Temperature sensor
insulation resistance
- IR
- PI
- DAR
High voltage AC optional
Test connections
- Standard: 4
- Optional: 7 and more
MTC3 R2
The high-end test systems for Motor production – without limit
MTC3 winding test systems are fully automatic high-end test devices for various winding goods in development, production, and test laboratories.
For production, EOL, automation
For test laboratory, R&D, approval, certification tests
- Testing of stators, rotors, transformers and inductors
- Surge test up to 15 kV
- Fully built-in partial discharge test according to IEC 61934 and DIN EN 60034-18-41
- Resistance measurement in four-wire technology with temperature compensation
- Insulation resistance test with automatic PI measurement
- Inductance test | LCR inductance measurement bridge
- High voltage test AC according to VDE standard
- Partial discharge at high voltage AC
- Insulation test DC
- Precise four-wire resistance measurement with temperature compensation down to the µΩ-space
- Rotating field test with static probe
- Expansion to up to 150 connections
- Temperature sensor test for 1, 2, 3 … x sensors
VoltageAnalyzer
Precise surge test directly on the winding
For production and test laboratories.
- Direct voltage measurement on the device under test – no line-induced influences
- 3-channel precision high-frequency probe
- Super fast measurement
- High measurement resolution
- Plus partial discharge measurement with passive or active antenna
- Built-in measurement point switch-over
- Ideal for demanding tests
Good to know:
The surge test
Where testing is performed on the device under test.
- within the winding from turn to turn
- from winding to winding
- from phase to phase
- from winding to the laminated core
The surge test provides a "deep insight into the winding". Such a test depth cannot be achieved with either the high voltage test or test methods such as the ohmic Resistance test or the inductance test.
The surge test detects these faults.
- Insufficient insulation clearances
- insulation weaknesses
- Inadequate dielectric strength
- incorrect number of turns
- deviating winding geometry
- enameled copper wire defects
- turn-to-turn faults
- voltage-dependent turn-to-turn faults
- phase-to-phase faults
- voltage-dependent phase-to-phase faults
- Faults to frame
- voltage-dependent Faults to frame
- layer faults
- voltage-dependent layer faults
- Problems with the laminated core
- Problems with the magnetic core
- Circuit faults
…
How the surge test works.
In principle, the surge tester generates a high-voltage pulse with a very high slew rate.
For this purpose, it charges the built-in surge capacitor in the device to the desired voltage level. As soon as the test voltage is reached, the 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 of the device under test 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.
Due to the very rapid voltage jump, high voltage differences are generated between individual and/or multiple turns within the winding. Should insulation weaknesses be present, the momentary high voltage difference leads to discharges. These influence the voltage curve of the damped oscillation in such a way that it visually deviates from an intact winding.
Using an analysis method patented by SCHLEICH and various algorithms, the device analyzes the difference between good and bad voltage and current profiles. Based on these analyses, the device automatically decides whether a winding is GO (GO) or NOGO (NOGO).
This is how the surge test is run.
Whether manual, semi-automatic, or fully automatic: with SCHLEICH surge testers, every test task can be run quickly and efficiently.
Our devices are all designed according to the "KISS principle". That is, following the motto: »Keep It Simple and Smart«. This principle serves as a guiding theme for all SCHLEICH products.
A manual test is performed by connecting Kelvin clamps to the device under test.
For the requirements of production facilities, semi- or fully automated surge testers or automatic surge test systems are more suitable. For this purpose, the devices are equipped with a relay switching field (relay matrix). These automatically switch the surge voltage to the desired test points.
Test systems of this type have up to 100 test connections, depending on the application.
Observe safety measures during the surge test!
Working with surge voltage is not without danger. Therefore, appropriate safety regulations and measures for contact protection must be strictly observed.
In the R&D space and during repairs, working on an open, unprotected device under test without mandatory contact protection is often unavoidable. In production, protective measures such as test covers, test cabins, light curtains, or barrier chains are typically used.
The requirements for a standard surge tester.
SCHLEICH surge testers typically feature the following characteristics:
- standard-compliant testing
- High voltage slew rate
- very fast measurement technology with high resolution
- fully automatic switch-over between the various winding Connections of the device under test
- fully automatic analysis
- Patented evaluation method
- Built-in test plan and test result memory
- Development, Production, and Service – Made in Germany
SCHLEICH surge testers are based on over 30 years of experience and pioneering work. From the outset, the measurement technology was designed digitally, not analog. Fundamentally, the latest technologies are always applied.
How to find the right surge tester.
If you only want to run surge tests on your device under test, a single test device is a good choice. It includes the surge test and, without additional extra costs, always the insulation resistance test and PI measurement.
If the device under test requires additional tests, we recommend our combination testers/multifunction testers. Here, supplementary test methods such as partial discharge, high voltage test AC – with partial discharge if required, ohmic Resistance test, rotating field test, and additional functions can be integrated. The fully automatic test method switch-over ensures that no measurement leads need to be manually reconnected to the device under test during testing.
Thanks to the intuitive and convenient operation of our surge testers, every test is performed quickly, precisely, and cost-efficiently.
The SCHLEICH Product Portfolio – expect more!
Surge testers
- TEST VOLTAGE from 3,000 V to 50,000 V
- Expandable with the discharge test
- 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
Custom test devices and systems
- Single and Multifunction Test Devices
- Relay matrices scalable from 2 … 100 terminals
- Complete test workstations
- Automatic EOL workstations
- Systems engineering including test cell
All-round Service
- Professional consultation with technical expertise
- Thorough initial Commissioning
- Regular certified calibration
- After-sales support by our service team
- Service by phone, via remote maintenance, or on-site
- Tailored training courses
- SCHLEICH.CARE.PREMIUM
Do you require personal product consultation?
We gladly provide you with comprehensive support and advice on all our products and services.
Call us or send us an email!