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
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Features
■ Low inductance impulse test: down to 10μH
■ Low energy test without damaging the coil
■ Fast detection of winding insulation at a speed of 5.5 meas/sec
■ 4 kinds of waveform comparison methods
■ Up to 40 MSPS sampling rate
■ 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)
General Specifications
Operaing Temperature and
Humidity | 0℃-40°C,S90%RH |
Power
Requirements | Voltage | 99V-121VAC,198V-242V AC |
| Frequeny | 47.5Hz-63Hz |
| Power Consumgon | ≤40NA |
| Dmensions(WMH×D) | 395mmx155mm445mm |
| Weight | TH2882A | Approx.7.6kg |
| TH2882AS | Approx.8.4 kg |
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 highspeed sampling technique, is a
new generation analysis test instrument for insulation performace
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.Theory of Impulse Test of Coil-winding
■ 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.
