Phenix LD75 User manual

Users Manual
Phenix Technologies Inc.
LIQUID DIELECTRIC TEST SET
MODEL NUMBER LD75/LD100
VERSION 4.1

TABLE OF CONTENTS
Section Number
DANGER
DESCRIPTION 1
SPECIFICATIONS 2
INSTALLATION AND GROUNDING INSTRUCTIONS 3
OPERATING INSTRUCTIONS 4
CALIBRATION 5
ELECTRICAL SCHEMATICS 6
MAINTENANCE AND TROUBLESHOOTING 7
PARTS LIST 8
PARTS ORDERING INFORMATION 9
RETURNED MATERIAL 10

GENERAL SAFETY PRECAUTIONS


HIGH VOLTAGE
This equipment is capable of providing POTENTIALLY LETHAL VOLTAGES!
Improper operation or test practices may result in injury or death to the
operator or surrounding personnel.
The operation of High Voltage test equipment should only be performed by
personnel familiar with HIGH VOLTAGE testing and safety procedures. The
operator of this equipment must be aware of all hazards associated with High
Voltage testing. The operator is responsible for himself and others in close
proximity of the testing area.
Some General Safety Practices for working with High Voltage Test Equipment
have been listed below for your reference.
Become familiar with your instrument before performing an actual test
Know your work area, check that all circuits are de-energized and locked
out.
Never work alone; always work with another qualified worker.
Mark off entire work area with barriers and warning tape.
Make all personnel aware of your testing activities.
Be aware of dangerous conditions that may arise from energizing a test
specimen.
Never modify test equipment, modifications to equipment could introduce
an unknown hazard or hinder a designed-in safety feature.
DO NOT operate damaged equipment. Remove power, and do not use
the equipment until safe operation can be verified by service-trained
personnel.
Phenix Technologies, Inc. assumes no liability for unsafe or improper use of test equipment.

1-1
DESCRIPTION
The Liquid Dielectric Test Sets, Models LD75, and LD100, are designed to test and measure the
dielectric breakdown of insulating oil used in transformers, capacitors, bushings, etc. in
accordance to ASTM D877 and ASTM D1816. The standard test set also satisfies the
requirements of IEC, VDE, and BS standards.
The test set is of portable type built into a metal case provided with a latching cover. Below and
protected by the cover is the control panel with the voltmeter as well as the high voltage test
compartment. The test compartment is provided with a see through lid of tinted plastic interlocked
to the test circuit with a limit switch to ensure full safety for the operation.
As options, the test set can be supplied with three different kinds of test cells, either TC/VDE test
cell with VDE electrodes according to ASTM D1816, TC/DE test cell with 1 inch electrodes
according to ASTM D877, or IEC test cell according to Publication 156.
The test set is automatic. Just place the prepared test cell in the test compartment, close
compartment cover and switch to start position. It will automatically raise the voltage to the
breakdown level, indicate failure, and the breakdown level can be read on the voltmeter.
SAFETY FEATURES
The test cell is isolated from the supply when the protective lid is raised.
Fast acting relay in series with the high voltage winding and the test cell ensures immediate
cutout at flashover.
Control lamp indicating AC power on.
Control lamp indicating failure.
Fast acting fuses are located both in the input to the test set and in the primary of the high
voltage transformer.
OTHER FEATURES
Input switch, fuse, and pilot light.
Motorized output voltage control from 0 to 75,000 Volts (LD75), and 0 to100,000 Volts
(LD100) with selectable speeds of 2000 volts per second (fixed) and variable.
Single range memory voltmeter connected across transformer primary records breakdown
voltage for the test sample.
The test compartment is provided with a 115 volt outlet for convenient plug-in of motor driven
stirrer when testing to ASTM D1816 standards.

2-1
SPECIFICATIONS
Input Voltage/Current Single Phase, 120 Volts at 50/60 Hz, 5 Amps
or 220 Volts at 50/60 Hz, 2.5 Amps
Output Voltage/Power Model LD75
0-75,000 Volts at 500 VA, Maximum Voltage to Earth is 37,500 Volts
Model LD100
0-100,000 Volts at 500 VA, Maximum Voltage to Earth is 50,000 Volts
Rate of Rise Selectable—2000 Volts/Second, Variable
Memory Voltmeter Model LD75: Scale of 0-75,000 Volts
Model LD100: Scale of 0-100,000 Volts
Accuracy 1% of Full Scale
Dimensions Model LD75
30” W x 18” D x 13” H
(762 mm W x 457 mm D x 330 mm H)
Model LD100
36” W x 20” D x 16” H
(914 mm W x 508 mm D x 406 mm H)
Weight Model LD75
120 lbs. (54 kg)
Model LD100
135 lbs. (61 kg)

3-1
INSTALLATION AND GROUNDING INSTRUCTIONS
1. Place the test set on a table or similar.
2. Make sure that the test set is level.
3. Open the cover.
4. Check that your power supply voltage corresponds with the input of the test set.
5. Check that you have a power supply outlet provided with ground.
6. Connect the power cord to the outlet.
7. The test set is now installed and ready for taking into operation.

4-1
OPERATING INSTRUCTIONS
Operation with TC/DE Test Cell
1. Adjust the test cell electrode by the use of the measuring rod located on the test cell in the
following manner.
a. Remove the measuring rod from its holder.
b. Release the set-screw which locks the adjustable electrode on the test cell.
c. Place the measuring rod between the electrodes.
d. Move the adjustable electrode in until snugly against the measuring rod.
e. Tighten set-screw to secure this position.
f. Remove the measuring rod and place it in the holder for safe keeping. (Distance
between the electrodes should be 1/10th of an inch or 2.5mm if measuring rod is not
used.)
2. Fill the test cell with test sample of oil.
3. Place the test cell in the test chamber of the unit. Close transparent cover.
4. Turn on AC power switch.
5. Set the rate of rise to 3000 volts per second.
6. Move the start switch to start position.
7. High voltage will come on; the unit will automatically raise the voltage at the selected rate
per second until failure occurs.
8. If a failure occurs, the voltage will shut off, the failure light will illuminate, and the break-down
voltage will be indicated on the kilovolt meter.
9. To return to zero, switch the stop-reset switch to reset as labeled.
10. Continue test as per ASTM D877.
11. Remove the test sample of oil and repeat the above procedure for other samples.
NOTICE: The voltmeter will continue to rise after the failure indicator is tripped. This
apparent overshoot should be ignored. The final voltage reading is the breakdown point.

4-2
OPERATING INSTRUCTIONS
Operation with TC/VDE Test Cell
1. Adjust the test cell electrode gap by using the double end gage in the following manner.
a. Remove the gage rod and hex wrench from the storage block on the side of the cell.
b. Loosen the set-screw which holds the moveable electrode in place.
c. Place the desired end of the gage, either .080 or .040 diameter, between the
electrodes.
d. Hold the movable electrode snugly against the gage rod while lightly tightening the set-
screw.
e. Remove the gage rod and replace it and the hex wrench back into storage.
2. Fill the test cell with test sample of oil.
3. Place the test cell in the test chamber of the unit. Plug line cord of stirrer into receptacle
inside the chamber. Close transparent cover.
4. Turn on AC power switch.
5. Set the rate of rise to 500 volts per second.
6. Move the start switch to start position.
7. High voltage will come on; the unit will automatically raise the voltage at the selected rate
per second until failure occurs.
8. If a failure occurs, the voltage will shut off, the failure light will illuminate, and the breakdown
voltage will be indicated on the kilovolt meter.
9. To return to zero, switch the stop-reset switch to reset as labeled.
10. Continue test as per ASTM D1816.
11. Remove the test sample of oil and repeat the above procedure for other samples.

4-3
OPERATING INSTRUCTIONS
Operation with IEC Test Cell
1. 1. Adjust the test cell electrode by the use of the measuring rod located on the test cell in the
following manner.
a. Remove the measuring rod from its holder.
b. Release the set screw which holds the adjustable electrode on the test cell.
c. Place the measuring rod between the electrodes.
d. Move the adjustable electrode in until snugly against the measuring rod.
e. Tighten set screw to secure this position.
f. Remove the measuring rod and place it in the holder for safe keeping. (Distance
between the electrodes should be 2.5 mm if measuring rod is not used.)
2. Fill the test cell with test sample of oil.
3. Place the test cell in the test chamber of the unit. Close transparent cover.
4. Turn on AC power switch.
5. Set the rate of rise to 2000 volts per second.
6. Move the start switch to start position.
7. High voltage will come on; the unit will automatically raise the voltage at the selected rate
per second until failure occurs.
8. If a failure occurs, the voltage will shut off, the failure light will illuminate, and the break-down
voltage will be indicated on the kilovolt meter.
9. To return to zero, switch the stop-reset switch to reset as labeled.
10. Continue test as per IEC Publication 156.
11. Remove the test sample of oil and repeat the above procedure for other samples.
NOTICE: The voltmeter will continue to rise after the failure indicator is tripped. This
apparent overshoot should be ignored. The final voltage reading is the breakdown point.