GREWIN Launches GWYD‑90B Armature Rotor Comprehensive Tester for DC Motor Quality Control
TIANJIN, China - GREWIN INDUSTRIAL GROUP, a 28‑year‑old professional manufacturer of coil winding and motor testing equipment with ISO9001 and CE certifications, officially releases the GWYD‑90B Armature Rotor Comprehensive Tester, an automatic armature testing solution built for DC motor and starter motor manufacturers across Russia, Iran, and India.
Motor armature quality directly determines motor service life and production yield. Traditional separate testing instruments cannot complete multi‑item electrical inspection efficiently on mass‑production lines. The GWYD‑90B armature comprehensive tester integrates all‑in‑one electrical performance testing to solve this pain point for local factories in Russia, Iran and India.
This dual‑station armature testing machine covers full required test items: insulation resistance, power‑frequency withstand voltage (Hi‑Pot), bar‑to‑bar resistance, cross‑bar resistance, welding resistance, and surge withstand voltage test. It works for armature rotors with 5‑72 commutator bars, widely used for power‑tool motors, starter motors, and small DC motors popular in Russian, Iranian, and Indian motor workshops.
Key technical highlights
- Temperature‑compensated DC resistance measurement: Built‑in temperature compensation function ensures stable reading of bar‑to‑bar resistance and welding resistance under different workshop ambient temperatures, avoiding measurement deviation caused by temperature change.
- Fast cycle testing: Approx. 3.5 seconds for 12‑bar armatures, approx. 6 seconds for 24‑bar armatures, matching high‑speed production takt.
- Surge withstand voltage test: Adjustable impact times and multi‑waveform comparison judgment, accurately detect inter‑turn short‑circuit faults for armature rotors.
- Intelligent fault diagnosis: Automatically identify short‑circuit, open‑circuit and resistance out‑of‑limit faults, output fault location, classify NOK defective products by fault types, and complete automatic statistics for production quality control.
- Powerful data storage: Stores 400 groups of test parameters and standard waveforms for different rotor models; test condition settings can be copied quickly via USB flash drive among multiple testers
- User‑friendly hardware: 10.2‑inch true‑color touch‑screen operation, modular design for easy maintenance and function upgrade.
Many motor manufacturers in India search for reliable armature growler tester solutions for their repair and mass‑production workshops. Unlike simple traditional growler testers, GWYD‑90B delivers quantitative digital measurement data instead of only qualitative fault alarms, helping Indian motor factories improve quality traceability.
For motor factories in Russia and Iran, where production‑site temperature fluctuates greatly, the temperature‑compensated welding resistance measurement is a core advantage. Welding resistance is a critical indicator for commutator welding quality; inaccurate readings will lead to misjudgment of good and bad armatures. GWYD‑90B's measuring range for welding resistance covers 0.001‑100.0 mΩ with high‑precision output.
"Many customers from Russia, Iran, and India require one‑stop armature quality inspection for their DC motor production lines. The GWYD‑90B armature rotor comprehensive tester is developed to meet real‑world onsite testing requirements, including surge test, Hi‑Pot hipot test, winding resistance, and weld resistance measurement," said the product manager of GREWIN. "We provide technical documentation, calibration guidance, remote support and FAT (Factory Acceptance Test) before shipment for overseas buyers."
The machine supports custom options such as dual‑insulation and multi‑point power‑frequency withstand voltage measurement. It can be deployed on new armature winding production lines or retrofitted into existing quality‑control workshops.
GREWIN INDUSTRIAL GROUP has focused on winding & testing machinery for 28 years, holding CE, ISO9001 certificates and national high‑tech enterprise qualification. The company provides complete pre‑sales selection consultation, factory acceptance testing, documentation, and after‑sales service for clients in Russia, Iran, India, and other global markets.
Motor manufacturers and quality‑control engineers who want to know more about GWYD‑90B armature rotor tester technical parameters, price, and delivery terms can contact GREWIN via WhatsApp or email for a datasheet download.
About GREWIN INDUSTRIAL GROUP
GREWIN INDUSTRIAL GROUP CO., LTD is a China‑based manufacturer specialized in coil winding machines and armature rotor testing equipment. Products serve the motor, inductor, and transformer manufacturing industries worldwide.
Website: www.coilwindingmachinechina.com
WhatsApp: +86 18322066726
Email: sales4@coilwindingmachinechina.com
