Coil Turns Tester – 301

Coil turns Tester model AB-301 is used to measure the number of turns of a coil immediately after it is wound. It consists of readout unit & selected platform. Same readout unit can be used with different type of platforms.

Quick & easy to operate it provides an instant readout of turns, and performance is not affected by a normal workshop environment.

In operation the setting/calibration is made against a standard coil.

The coil under test is placed on the appropriate platform & the ends of the coil are connected to the pair of terminals. The number of turns of a test coil is indicated on the digital readout immediately after making the connection.

The coil turns tester that has no moving parts may be used in conjunction with any of the plug-in platform described in the leaflet.

The platforms type 301-1 & 301-2 cover the most commonly found sizes of wound bobbins or self-supporting coils.

Simple to use, the bobbin is placed over the probe & the termination leads, connected to the platform.

The number of turns on the bobbin is then instantly on the readout unit.

Coil Turns Tester - 301
  • Measures number of turns of EI & Torroid (with core) transformers
  • Tests two windings of same transformer.
  • Polarity comparison is provided.
  • Accuracy upto 0.2%
  • Measures upto 1 lakh turns.
  • Selection of platforms for different sizes
  • Ideal for QA purpose.

Coil turns Tester model AB-301 is used to measure the number of turns of a coil immediately after it is wound. It consists of readout unit & selected platform. Same readout unit can be used with different type of platforms.

Quick & easy to operate it provides an instant readout of turns, and performance is not affected by a normal workshop environment.

In operation the setting/calibration is made against a standard coil.

The coil under test is placed on the appropriate platform & the ends of the coil are connected to the pair of terminals. The number of turns of a test coil is indicated on the digital readout immediately after making the connection.

The coil turns tester that has no moving parts may be used in conjunction with any of the plug-in platform described in the leaflet.

The platforms type 301-1 & 301-2 cover the most commonly found sizes of wound bobbins or self-supporting coils.

Simple to use, the bobbin is placed over the probe & the termination leads, connected to the platform.

The number of turns on the bobbin is then instantly on the readout unit.

Technical Specifications of Model AB- 301

1) Display

4 & ½ digit RED LED

2) Ranges

a) 0-1999.9 Turns

b) 2000-19999 Turns

c) > 20000 Turns

3) Operating Temperature–

0-50 Deg C

4) Power

230VAC +/- 10 %, 50 Hz

5) Size

350(D) 110(H) 245(W) mm approx.

6) Weight

4 Kgs approx

7) W1/W2

Two turns can be read of same coil with switch setting at platform.

8) Polarity

Winding polarity check available.

9)Range

Three Ranges are available

a) 1K 0- 1999.9 turns
b)10K 2000-19,999 turns
c)100K 20000- 40000 turns

. In most cases a coil above 19999 turns is unlikely to give an accurate reading because of self-capacitance in the winding.

*Warm up time 15 minutes.

*Calibration routine adjustment Interval for consistent accuracy – 2 Hrs.

Coil Platforms

301-1

301-2

301-3

Dimensions of Rod

10 mm dia

6.5 mm dia

3X3 mm sq

Accuracy using
Standard coil supplied

0.5% ± 1 digit

0.5% ± 1 digit

0.5% ± 1 digit

Identical sample

0.2% ± 1 digit

0.2% ± 1 digit

0.2% ± 1 digit

Max.Coil size that will Fit in conical shape of

140H

90 mm base dia

65mmH

50mm base dia

- -

Max.Coil size that will Fit in Cylindrical shape of

--

- -

32mm height
25mm base dia

Platform Size

310x1120 mm

190x120 mm

190x120

Weight

1.2 Kg

1.2 Kg

1.2Kg

Note – The turns are to be tested without core i.e. in bobbin form. Torroidal platforms are available which measures turns with core The platforms types 301-6 & 301-7 are specially designed to measure torridal wound coils .The 301-6 is suitable for small cores & type 301-7 is suitable for larger verities. In operation the probe is pulled forward & the core is placed over it. After returning it to the upright position, the level is set to suit the permeability of the cores being measured.

This is done by adjusting a front panel potentiometer. Electrical connection is made between the platform & the coil lead-outs & the number of turns is read from AB-301 readout unit

Coil Platforms

301-5

301-6 301-8

301-7

Dimensions of Rod

3mm

5mm

10mm

Accuracy using internal Standard

0.5% ± 1 digit

0.5% ± 1 digit

0.5% ± 1 digit

Accuracy using identical Coil

0.2% ± 1 digit

0.2% ± 1 digit

0.2% ± 1 digit

Extreme coil dimensions mm

ID= 3.5,OD= 30

ID=5.5,OD= 50

ID=11,OD =60

Platform Size mm

205x305x220

205x305x220

205x305x220

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