TH2882AS-5 Impulse Winding Tester

RS232、USBHOST、HANDLER

GPIB

Performance characteristics

■ Output Impulse Voltage: 500V-5kV 100V steps

 Low inductance impulse test: down to 200μH

 Fast detection of insulation: 5.5 meas/sec

 Up to 40 Msps sampling rate

 Low energy test without damaging the coil 

 4 kinds of waveform comparison methods

 320×240 dot-matrix graphic LCD display

 Chinese and English operation languages

 Fridndly user's interface and easy operation

 Multi-trigger mode programmable

 Voltage, Time and Frequency measuring function

 Direct display of comparison result

 Keyboard lock and password protection function 

 Handler, RS-232C, and GPIB(optional) interfaces

   500 groups of waveforms can be stored in USB disk

   (optional)

 Multi-channel scan control interface: SCANNER (optional)



Brief Introduction

Due to the influence of coil wire material, magnetic material, framework and manufacture technics etc., coil products (such as transformers, motors, etc.) may have defects of low insulation between coil layers, circles and leads. TH2882A series impulse winding tester, adopting high-speed sampling technique, is a new generation analysis test instrument for insulation performance of coil products.

When testing, TH2882A compares the standard waveform stored in the instrument with current measuring waveform. TH2882A gives the PASS or FAIL comparison result according to Area, Differential Area, Corona Discharge, Differential Phase etc. With strong function, precision test method, flexible operation and various interfaces, TH2882A can provide test solution for most coil winding products.

 The impulse winding tester tests the electrical characteristics of coil winding without damaging the DUT. The prerequisite conditions for quality of a coil can be detected at just a glance. The detection is carried out when the same electric impulse by capacitor discharge is applied to the standard and the DUT. The voltage decay waveform is generated in response to the impulse, related to the   Q-factor and inductance of the coil. In this sense, the tester can detect turn & layer short, the differences in the number of turns and the material of the core. If high impulse voltage is applied, the poor insulation will appear as a corona or layer discharge.


image.png

    The Decay curve of winding voltage


Application
Technical Parameter

Model

TH2882A-3

TH2882A-5

TH2882AS-5

Output   Impulse

Voltage

300V-3000V, 50V Steps

± 5% of   set value ± 15V

500V-5000V, 100V Steps ± 5% of set value± 25V

Voltage   Control

Mode

Normal

Voltage   programmable at the measurement terminals when terminals opened

Constant

Maintaining   selected voltage across the winding independent of changes of the winding   impedance

Impulse   Energy

(1K Ω   Resistive Load)

≤ Max. 90   milli-Joules

≤ Max. 250   milli-Joules

Type of Coil

Single-phase

Three-phase three-wire system

Three-phase four-wire system

Inductance   Range

≥ 10μH

≥ 20μH

≥ 200μH

Display

Screen

Mode

320x240   dots LCD

Waveform   Display Dots

240x200   dots

Display

Information

Setting parameter, Standard & measuring   waveform, Measurement & comparison result

Waveform

Sampling

Sampling Rate

40MSPS/25ns, 20MSPS/50ns, 10MSPS/100ns, 5MSPS/200ns, 2.5MSPS/400ns, 1.25MSPS/800ns, 625kSPS/1.6μs, 312kSPS/3.2μs

Resolution

digits

Sampling Length

Bytes

Input Impedance

10MΩ (Resistive voltage divider)

Measuring   Speed

5.5 times/sec (Waveform display OFF, PASS/FAIL ON)

3.3 times/sec (Waveform display ON, PASS/FAIL ON)

Average Rate

1-99, Programmable

Waveform Measurement

Voltage,   Time, Frequency

Trigger Mode

Internal/Manual (Foot)/External/ BUS

Comparison Mode

Area size   comparison, Differential area comparison, Corona discharge differential phase   comparison

Area Size Repetition Accuracy

±1%

Differential   Area Repetition

Accuracy

±1%

Detection Output

PASS/FAIL   display, Alarm

Alarm Volume

Long high,   Long low, Single low, Double low, Off

Memory

groups of   standard waveform data can be

stored in   internal non-volatile memory 500 groups in USB flash memory (optional)

Interface

HANDLER   (Start, Stop, Pass NG, Busy, EOC, etc.), RS232C,   GPIB(optional)



Operating Temperature andHumidity0°C−40°C,  ≤90%RH
PowerRequirementsVoltage99V - 121V AC,198V - 242V AC
Frequency47.5Hz−63Hz
Power Consumption≤ 40VA
Dimensions (W×H×D)395mmx155mmx445mm
WeightTH2882AApprox. 7.6 kg
TH2882ASApprox. 8.4 kg


Data download
Name of dataDownload Link
SpecificationDownload
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