FMF

U9845 4 Channel Impulse Winding Tester 100-5000V 100Msps Coil Turn-to-Turn Tester for Motor Transformer Inductor Coil Test Machine

$1,361.61 USD

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U9845 Impulse Winding Tester for Coil Turn-to-Turn Testing

The U9845 is a 4-channel impulse winding tester for turn-to-turn insulation and waveform comparison testing on motor windings, transformer windings, inductors, coils, and similar wound components. It provides 100-5000V impulse voltage adjustment in 10V steps and supports high-speed waveform acquisition up to 100Msps for comparing winding response under impulse conditions.

The tester supports four high-voltage channels and four waveform comparison methods: area, differential area, corona, and differential phase. It is suitable for production inspection, laboratory winding checks, incoming quality control, and coil test stations that need repeatable OK/NG judgment and waveform record handling.

Key Features

4 high-voltage channels for multi-winding impulse testing.
100V-5000V impulse voltage range with 10V setting steps.
100Msps maximum waveform acquisition for winding response comparison.
Four comparison methods: area, differential area, corona, and differential phase.
Supports manual, foot switch, external, internal, and bus trigger modes.
OK/NG display with LED and alarm output for production inspection use.
USB Host supports screen image storage and firmware upgrade.

Suitable Applications

Motor winding turn-to-turn testing
Transformer primary and secondary winding testing
Inductor and coil impulse waveform comparison
Three-phase machine delta and star connection testing
Single-phase machine winding comparison checks
Production quality control for wound components

Specifications

Model	U9845
Number of HV Channels	4
Impulse Voltage	100V-5000V, 10V step, 5% +/- 10V
Inductance Test Range	20uH or higher
Impulse Energy	Max. 0.25 Joule
Test Speed	Single winding: max. 12 measurements/sec; 4-winding: max. 2 measurements/sec
Applied Pulses	Max. 32 test pulses; max. 8 demagnetizing pulses
Input Impedance	10M
Waveform Acquisition	Max. 100Msps, 10 adjustable levels, 8-bit resolution, 6500-byte memory depth
Comparison Methods	Area, differential area, corona, differential phase
Repeated Accuracy	+/- 1%
Trigger Mode	Manual including foot switch / external / internal / bus
Detection Output	OK/NG display, LED / alarm
Internal Memory	120 groups
U-Disk Memory	600 groups for standard waveform data and test setup parameters
Interfaces	USB Slave, RS232C, IEEE488 optional, USB Host
Power Supply	220V / 110V
Power Consumption	50VA or lower
Weight	8.0 kg
Dimensions	400 x 132 x 350 mm
Operating Environment	0-40 C, 75% RH or lower

Selection Notes

Use this tester when the inspection task requires impulse waveform comparison rather than only basic resistance or inductance measurement.
The tested winding should be within the instrument's impulse voltage and inductance range.
For automated stations, review the trigger mode, HANDLER signal, and interface requirements before ordering.
The plug and voltage are configured according to the customer's shipping country by default.

FAQ

What is an impulse winding tester used for?

An impulse winding tester applies a short high-voltage pulse to a winding and compares the waveform response. It is used to check turn-to-turn insulation and winding defects in motors, transformers, inductors, and coils.

Which tester is suitable for motor and transformer coil turn-to-turn testing?

The U9845 4-channel impulse winding tester is suitable for motor winding, transformer winding, inductor, and coil turn-to-turn testing within its 100V-5000V impulse range.

How many channels does the U9845 have?

The U9845 has 4 high-voltage channels for multi-winding impulse testing.

What comparison methods does it support?

It supports area, differential area, corona, and differential phase comparison methods.

Can it be used in a production test station?

Yes. The tester supports OK/NG display, LED/alarm output, multiple trigger modes, HANDLER signals, internal memory, and U-disk storage for production inspection and quality control workflows.