■ Output Impulse Voltage: 300V-3kV 50V steps
■ Low inductance impulse test: down to 10μH
■ 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.
- 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)
- Accessary
| Standard | |||||
| Accessories name | Model | ||||
| High voltage test cable | TH2883-01 | ||||
| Foot switch | TH2881-001 | ||||
| Optional | |||||
| Accessories name | Model | ||||
| TH10001GPIB interface board | TH10001 | ||||
| TH2818-USB main control board | TH26025 | ||||