Winding Resistance Meter

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Product Details:

The winding resistance is measured on the principle of voltage drop. A specific DC current is passed through the equipment under test, the potential drop across the circuit is measured by the “millivoltmeter” which is directly indicated in micro-ohms. The instrument comprises of a constant voltage/current DC source having capacity of 300 VA/10A, an ammeter to indicate the current and “milli-voltmeter” calibrated in micro/milli-ohms for measurements, along-with the necessary terminals and switches, housed in an aluminium cabinet.
The unit will display the Resistance of the winding as well as the CURRENT flowing in the circuit. The protection against back EMF of the transformer has been provided. On switching OFF the “Output” switch or break in the current circuit, the discharge circuit will automatically come into operation. The discharging will be indicated by a glowing LED. The flow of current during testing is indicated by the continuous sound of the buzzer. Discontinuity in the OLTC or the current circuit will be indicated directly by an LED which starts glowing and the stoppage of buzzer.

Technical Specifications:

• Input: 240 V, 1 Phase, 50 Hz.
• Resistance Ranges : 0-1.9999/19.999/199.99/1999.9 milliohms at 10 A (x1) 0-2.9998/29.998/299.98/2999.8 milliohms at 5 A,(x2) 0-19.999/199.99/1999.9/19999 milliohms at 1 A, (x10), 0-0.19999/1.9999/19.999/199.9 ohms at 100 mA. (x100)
• Current Ranges: 100 mA, 1 A, 5 A & 10 A DC. (Selectable)

Metering:

• 4 ½ Digit meter, having ranges of 0-1.9999 milli-ohm to 1999.9 milli-ohms in 4 selectable ranges.
• 3 ½ Digit ammeter, having ranges of 100.0 mA and 10.00 A
• Resolution: 0.1 micro-ohm to 0.01 ohm.
• Accuracy: Value + 2% + Resolution + 2 digits.
• Display: 4.5 digit LED.
• Output: 30 V DC maximum.
• Protection: Fuse protection on input. Back emf protection on measuring inputs.
• OLTC Testing: Detection of discontinuity in current circuit by indicator.
• Housing: Moulded VIP suitcase (18”) for easy portability.
• Dimensions: 450 x 325 x 160 mms. Approx
• Weight: 10 kgs. Approx. (Instrument only)

Accessories:

• AC mains connecting lead, 3 meter long.
• Current lead, 2-core, 15 meter long.
• Potential lead, 3-core, 15 meter long.
• An earth lead, 10 meter long.

Note:

• Equipment may be supplied with specification differing from that described above due to continuous development in the electrical and mechanical design

Product Price :Get Latest Price

Product Details:

The contact or winding resistance is measured on the principle of voltage drop. A specific DC current is passed through the equipment under test, indicated by the digital ammeter and the potential drop across the contact / winding is measured by the digital “millivoltmeter” and calibrated as micro-ohm-meter. The instrument comprises of a DC power supply, the ammeter and the micro-ohm-meter along-with the necessary four terminals and switches, housed in a moulded “VIP” type suitcase. Two pairs of current & potential leads are provided for measurement.Technical Specifications µ Ranges 0.1 micro – 1,999.9 micro-ohms, resolution – 0.1Input 230 V, 1 Phase, 50 Hz.Output Current - 100 A DC ( Open Circuit Voltage – 5 V. )Metering4 ½ Digit Micro-ohm-meter. 3 ½ Digit Ammeter, Range 0-100 A DCDisplay LED Housing Moulded suitcase “VIP” type – 18” x 12” x 6” approx. Weight11 kgs. Approx. Accessories AC mains connecting lead, 1.5 meter longOne pair of connecting leads suitable to carry 100 A, 10 meter long and one pair of connecting leads to measure resistance, 10 meter long. NoteEquipment may be supplied with specification differing from that described above due to continuous development in the electrical and mechanical design