Phenix Technologies PM15-2 Guida utente

OPERATIONS AND APPLICATIONS MANUAL

MODEL NUMBER PM15-2/PM15-4

15 kV DC HIGH POTENTIAL TESTER

WITH MEGOHMMETER

Version 1.0

TABLE OF CONTENTS

Section Number

DANGER

PRODUCT INFORMATION 1

-SAFETY AND CAUTION NOTES

-DESCRIPTION

-SPECIFICATIONS

CONTROLS AND CONNECTIONS 2

-FRONT PANEL CONTROLS AND METERS

-INPUT/OUTPUT CONNECTIONS

SET UP AND OPERATION INSTRUCTIONS 3

-INSTALLATION

-TEST LEAD CONNECTIONS

-OPERATION

SCHEMATIC 4

PARTS LIST 5

PARTS ORDERING INFORMATION 6

RETURNED MATERIAL 7

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

PRODUCT INFORMATION

CAUTION: Contact with the test leads on this equipment can cause

harmful or fatal electrical shock. Do not touch test leads while a test is in

process.

SAFETY AND CAUTION NOTES

1. Contact with the test leads on this equipment can cause harmful or fatal electrical shock. Do

not touch test leads while a test is in process.

2. Insure that the unit is properly grounded before proceeding with a test.

3. Turn the unit off before reaching inside. Damage to the unit and hazardous shock to

personnel will result if this procedure is not followed.

4. Insure that the equipment to be tested is de-energized and properly isolated.

5. Insure that the equipment to be tested has been properly grounded using a high voltage

grounding stick and rubber gloves.

6. Insure that barriers and warning signs are erected in order that personnel in the test area are

protected. Use an assistant operator where appropriate to keep non-essential personnel

away from the test site.

7. When testing cables, the conductors at the distant end should be isolated from each other

and taped.

8. When testing a faulted cable, it is advisable to first make an insulation resistance

measurement before proceeding with the high voltage test.

9. Use care to avoid damaging the unit during disassembly and re-assembly procedures.

10. This unit should only be operated by someone familiar with high voltage testing and safety

procedures.

DESCRIPTION

The PM15-2/PM15-4 unit is capable of producing regulated voltages as high as 15 kV DC into a

variety of insulated electrical apparatus. The unit will measure leakage current flow through (or

insulation resistance levels of) the ground insulation of the test sample. Leakage current as low

as .01 microamperes DC and as high as 2,000 microamperes (4,000A - PM15-4) DC can be

read directly from the units front panel meter. Insulation resistance values up to 3,000,000

megohms may also be read directly at test voltages of 5, 10 or 15 kV DC.

1-2

PRODUCT INFORMATION

The unit incorporates an overcurrent trip circuit which will instantly de-energize the high voltage

power supply if such a condition is encountered. The level of sensitivity at which trip-out will occur

is controlled by the front panel adjustment labeled “Min-Max”. The trip setting can be as low as

10% or as high as approximately 110% of full scale reading. Overcurrent trip is indicated by an

audible alarm. Unit will go into current limiting state at approximately 110% of full current output

rating. If range switch is in highest setting and current trip is not set low enough, no current trip

will occur even if output is shorted.

SPECIFICATIONS

Description:

DC High Potential Tester with Megohmmeter

Primary Application:

Dielectric withstand testing and insulation resistance measurement of motors, cables, and

transformers.

Input:

120 Volts AC, 50/60 Hz, single phase, 1 Amp

220 Volts AC, 50/60 Hz, single phase, .5 Amps

Output:

Regulated 0-15 kV DC, continuously adjustable with manual control.

0-2mA (PM15-2) 0-4mA (PM15-4) Negative Output, Positive Ground

Voltmeter:

2%, 3.5”, analog meter, 0-7.5/15 kV

Currentmeter/Megohmmeter:

2%, 3.5”, analog meter,

0-.5/5/50/500/5,000 microamperes DC

Megohms at 5kV DC Megohms at 10kV DC

PM15-2 2.5-100/1,000/10,000/100,000/1,000,000 5-

200/2,000/20,000/200,000/2,000,000

PM15-4 1.25-100/1,000/10,000/100,000/1,000,000 2.5-

200/2,000/20,000/200,000/2,000,000

Megohms at 15kV DC

PM15-2 7.5- 300/3,000,30,000/300,000/3,000,000

PM15-4 3.75–300/3,000/30,000/300,000/3,000,000

Termination:

Input: Standard modular 3-wire cord mating to fused input module

High Voltage: 10’ attached cable with clip and insulator

Return: 10’ separate cable with insulated clip

Ground: 10’ separate cable with clip

Dimensions:

18” W x 11” D x 11.5” H (457 mm W x 279 mm D x 292 mm H)

Weight:

120 VAC

220 VAC

PM15-2

15 lbs. (6.8 kg)

16 lbs. (7.3 kg)

PM15-4

17.5 lbs. (7.9 kg)

18.5 lbs. (8.4 kg)

2-1

CONTROLS AND CONNECTIONS

FRONT PANEL CONTROLS AND METERS

Power On:

When depressed and locked, this illuminated pushbutton switch (green lens) supplies

power to all unit components with the exception of the high voltage power supply.

Voltage Control:

Clockwise rotation of this control increases the unit’s output voltage. The unit’s output

range is 0-15,000 volts DC. This control must be returned to the “0” (full counter

clockwise position) before a test can be initiated if either the “Power” or “High Voltage”

switches have been previously disengaged, or if an overcurrent condition has been

encountered.

High Voltage:

When depressed and locked, this illuminated pushbutton switch (red lens) supplies power

to the unit’s high voltage power supply, if voltage control is set at “0”. If voltage control is

not set at zero, high voltage will not activate and buzzer will sound until voltage control is

returned to zero.

Currentmeter-Megohmmeter:

The currentmeter range is selected by the five position rotary switch. The switch setting

indicates the full scale current of the currentmeter and the megohmmeter multiplier. The

table below shows the full scale currentmeter range with each switch setting.

Switch Setting

Currentmeter Ranges

PM15-2

PM15-4

.5 microamps

0-.5 microamps

5 microamps

0-5 microamps

50 microamps

0-50 microamps

500 microamps

0-500 microamps

5,000 microamps

0-2,000 microamps

0-4,000 microamps

The megohm multiplier is selected by the same five position switch as the currentmeter

range. This allows direct megohm readings at 5 and 10 kV. In order to read megohms

directly, the kilovolt meter must be set to either 5 or 10 kV. The megohms are then read

from the right hand meter, megohms at 10 kV on the top scale and megohms at 5 kV on

the middle scale. The table below shows the megohm range for each switch setting and

kilovolt range.

2-2

CONTROLS AND CONNECTIONS

FRONT PANEL CONTROLS AND METERS (continued)

Megohmmeter Ranges

Switch Setting

5 kV

10 kV

15 kV

x10K

10,000 –1,000,000 M

20,000 –2,000,000 M

30,000-3,000,000 M

x1K

1,000 - 100,000 M

2,000 –200,000 M

3,000-300,000 M

x100

100 –10,000 M

200 –20,000 M

300-30,000 M

x10

10 –1,000 M

20 –2,000 M

30 - 3,000 M

(PM15-2)

2.5 –100 M

5 –200 M

7.5 –300 M

(PM15-4)

1.25 –100 M

2.5 –200 M

3.75 –300 M

Voltmeter Range:

This two position rotary switch scales the DC kilovolt meter. When the switch is rotated to

“7.5”, the kilovolt meter range is 0-7.5 kV and the lower black scale is read in order to

determine output voltage. When the switch is rotated to “15”, the kilovolt meter range is

0-15 kV and the upper scale is read in order to determine output voltage.

Current Trip:

This control, located below the currentmeter range select switch, allows the operator to

set the level of leakage current measured by the instrument before high voltage shutdown

occurs. At its highest level (full clockwise) approximately 110% of full scale current will be

allowed. At its lowest level (full counterclockwise) approximately 10% of full scale current

will be allowed before shutdown.

Guard:

The guard function is selected by a push button switch. When the guard switch is

unlatched (non-illuminated), leakage current or insulation resistance values associated

with the “Ground” terminal will be measured. When the switch is depressed to “Guard”

(illuminated), leakage current or insulation resistance associated with the “Ground”

terminal will not be measured. The low potential or return side of the test specimen

must be isolated from ground to use the guard function.

Fuses: The protective fuses are contained in the AC power module.

2-3

CONTROLS AND CONNECTIONS

INPUT/OUTPUT CONNECTIONS

Return:

Leakage current or insulation resistance values associated with this terminal is measured

by the “DC Microammeter”. The low potential side of the test specimen should be

connected to this terminal (red cable provided). When guard is not activated (switch not

depressed), the return terminal is connected internally to ground. All currents associated

with return and ground will pass through the current meter. When guard is activated

(switch depressed), return is isolated from ground and only currents associated with

return will be measured. The test specimen low potential side must be isolated from

ground in order to measure currents to return in guard mode.

Ground:

This terminal is to be connected to the facility ground (black cable provided). Leakage

current or insulation resistance values associated with this binding post terminal may be

either measured by the “DC Microammeter” (guard switch not depressed) or bypassed

around the “DC Microammeter” (guard switch depressed) depending on the state of the

guard switch.

If the low potential side of the test specimen connected to Return can not or will

not be isolated from ground, guard mode can not be used or the current meter will

not function properly.

Output:

This test lead with clip and insulation boot supplies the units high voltage output to the

apparatus under test.

AC Power Module:

The provided AC input cable plugs in here to provide AC power to the unit. The module

also contains the protective fuses for the unit.

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