13.8 kV Maximum Test Voltage
2,300 kVA Electrical Power Capacity
80 t Overhead Crane Capacity
IEC 60034 International Test Standards
State-of-the-Art German Engineering

Independent Industrial Electric Motor Testing Services

Looking for one of the world's most advanced, independent electric motor test facilities? MENZEL provides comprehensive motor load testing, routine checks, type tests, and complete drive system verifications for all motor brands and manufacturers worldwide.

Located at our modern production facilities in Hennigsdorf near Berlin, Germany, the MENZEL load test field operates to the highest standards of international electrical engineering. Our test field handles high-voltage and low-voltage electric motors up to 13.8 kV and electrical power outputs up to 2,300 kVA.

Equipped with a 6 kV frequency converter, variable rotary converters for voltages from 3 kV to 13.8 kV, and heavy-duty load resistors, we test three-phase asynchronous squirrel cage motors, slip ring motors, synchronous machines, DC motors, transformers, and frequency converters. We even specialize in complex vertical motor testing under realistic thrust load conditions.

Technical Capabilities

Test Bench Equipment & Operating Ranges

Precision measurement instruments and high-capacity infrastructure engineered to satisfy international inspection authorities.

Key Test Bench Operating Data

Test Voltage Range Up to 13,800 V (Continuous adjustment)
Frequency Supply Range Variable up to 67 Hz
Electrical Power Output Up to 2,300 kVA (Bi-frequency up to 5 MW)
Maximum Shaft Power 1,800 kW (Speed range: 500 to 3,600 rpm)
Crane & Lifting Capacity 80 tonnes capacity (7.5 m hook height)
Clamping Test Beds 2 Heavy plates: 12x5 m & 9x3 m
Vertical Motor Testing IM V1, IM V10, IM 311 via angular gearbox
Cooling & Thermal Simulation Water-cooled tests up to 107 kW loss (15 m³/h)

High-Precision Measurement Instrumentation

  • Power Analyzer: Yokogawa WT1800 multi-channel power meter (up to 18 kV & 1 kA parallel 3-phase measurement).
  • Torque Measuring Flanges: Hottinger Baldwin (HBM) precision flanges rated up to 30 kNm (±0.05% accuracy, 4,000 rpm) and 5 kNm (12,000 rpm).
  • Load Resistors: Gino air-cooled cast iron resistor bank (1,000 kW rated at 800V 3-phase, adjustable in 1 kW steps).

Specialized Diagnostic Systems

  • High-Voltage Insulation Device: Dielectric strength testing up to 25 kV AC/DC.
  • Partial Discharge Measurement: Omicron MPD series 3-point partial discharge detection.
  • Bi-Frequency Procedure: Thermal rise testing up to 5 MW per IEC 60034-29 without full external mechanical load.
Quality Assurance & Standards

Routine, Type, & System String Testing Procedures

All tests are documented in full compliance with EN / IEC 60034 standards, IEEE specs, and international classification society guidelines.

Routine Testing for Asynchronous Motors

Standard quality verification for every new or overhauled industrial electric motor:

  • Visual inspection and mechanical checking
  • Stator winding DC resistance measurement at ambient temperature
  • Insulation resistance measurement (Winding and accessory sensors)
  • High-voltage dielectric withstand check on stator winding
  • Verification of phase sequence and rotational direction
  • No-load test at rated voltage and frequency
  • Short-circuit impedance test at reduced voltage
  • Bearing temperature rise check during continuous operation
  • Vibration spectrum analysis (FFT vibration measurement)
  • Functional verification of space heaters, RTDs, and sensors

Type Testing & Full-Load Heat Run Tests

Comprehensive performance validation under full thermal and electrical stress:

  • Full thermal heat run under rated continuous load
  • Load characteristic curves (25%, 50%, 75%, 100%, and 125% load points)
  • Efficiency determination and power factor calculation
  • Measurement of short-circuit characteristic & current curve
  • Measurement of no-load current vs. voltage characteristic
  • Determination of Polarization Index (PI) and dielectric absorption
  • No-load acoustic noise level spectral measurement
  • Transient voltage ripple measurement

Vertical Motor Load Testing

Testing vertical motors (IM V1, IM V10, IM 311) under realistic axial thrust loading conditions using our dedicated vertical angular gearboxes. Eliminates installation risk before site delivery.

Transformer-Converter-Motor String Tests

Full drive system testing ("Stringtest"). We simulate real operational interactions between the supply transformer, frequency converter, and electric motor to verify complete drive line harmony.

Third-Party Motor Testing

Independent, manufacturer-neutral testing for third-party motor brands. Fast scheduling and unbiased certified test protocol documentation accepted by global insurance and inspection agencies.

Factory Acceptance Testing (FAT)

Witness Your Motor Test Live in Berlin

We invite plant managers, project engineers, and quality inspectors to witness testing live in our facility. Our modern, soundproof customer lounge offers direct panoramic views of the test bays.

Fully Equipped Workstations: High-speed internet access and video feeds displaying real-time test parameters during load runs.
Certified Test Protocols: Receive immediate, verified computer-generated test logs according to EN 60034.
Certified Experts On-Site: Qualified explosion protection experts and senior drive engineers walk you through every test step.
Soundproof customer lounge with direct view of motor test bays
Full Service Portfolio

Complementary Drive Services

In addition to testing, Menzel provides end-to-end engineering support for industrial electric drive systems worldwide.

Custom electric motor modifications and adaptations

Modifications & Adaptations

Custom mechanical and electrical modifications including special shaft extensions, custom flanges, and terminal box repositioning.

Replacements and 1:1 replicas of obsolete motors

Replicas & Replacements

Exact 100% mechanical and electrical replicas of existing legacy or obsolete motors without requiring site modifications.

Electric motor overhauling and reconditioning

Overhauling & Retrofitting

Full reconditioning, bearing replacements, structural repair, and performance modernizations of large industrial motors.