OIL BREAKDOWN VOLTAGE (BDV) TEST SET

Product Description

TECHNICAL FEATURES:

Input Power Supply : 230Volts, 1 ph. 50Hz AC.

Output Voltage : Continuously variable from 0 to 100 KV AC with center point of HV winding grounded ie. (50KV-0-50KV).

Duty Cycle : The OT Set will be designed for Intermittent rating, as per requirement of test ntervals.

Nature of Cooling : The Transformer will be Cast Resin

Electrodes : Spherical /Cylindrical & Mushroom type detachable.

The Test Set consists of

 Power Mains ON-OFF operation is done by means of an illuminated ON-OFF switch along with fuse protection.

 'EMERGENCY OFFï push button.

 KEYBOARD: Key matrix will be provided to select mode of testing standard, sequence of operation etc.

 PRINTER: One built-in 24 column dot matrix printer will be provided.

 MAGNETIC STIRRER: For Oil circulation within the Test vessel.

 Isolation transformer for control operation, auxiliary supply to power supply for electronic PCBs.

INDICATIONS

ï 'HT ONï lamp indication.

ï Lamp indication for 'STIRRING ONï, 'END OF TESTï & 'TEST PASS/FAILUREï.

DISPLAY:

One LCD display and key pad will be provided to set programs.

ï Measuring Accuracy: +1.5%+ 0.1KV

ï Resolution: 0.1KV

This LCD will indicate the following:

ï Sl. No. of Test Specification selected

ï Mode of Operation (As listed in Table 01 )

ï Initial Stand time in secs.

ï Rate of Rise of voltage in KV/secs.

ï Stir Time Test Duration in secs.

ï Stand Time Test Duration in secs

ï No. of cycles.

ï Individual Break Down Voltage (Vpeak/ïï2)

ï Arithmetic mean breakdown voltage

INTERLOCK:

ï Zero start interlocking will be provided to ensure that the HV circuit cannot be energised unless the regulator is initially kept or brought back to zero position.

ï HT CHAMBER Door interlocking will be provided to ensure that the HV circuit cannot be energised unless the transparent cover of the oil cell placement chamber is closed.

ï Minimum & maximum position interlock will be provided so that limit switch will automatically disconnect 'INCREASE/DECREASEï circuit of motor connection at maximum and minimum position respectively

PROTECTION:

ï Besides main switch & fuse in the input side, one CT and contactor provides a snap acting automatic tripping of HV circuit in case of over load or break down of oil sample under test. On tripping the last applied test voltage will be latched & indicated in the LCD.

ï Double ground protection will be provided.

ï Electromagnetic shielding of High Voltage Test set.