OPERATIONS AND APPLICATIONS MANUAL
MODEL NUMBER PAD10-25
10 KV AC/25 KV DC HIGH POTENTIAL TESTER
WITH MEGOHMMETER
Version 3.1
TABLE OF CONTENTS
Section Number
DANGER
PRODUCT INFORMATION
-SAFETY AND CAUTION NOTES
-DESCRIPTION
-SPECIFICATIONS
1
CONTROLS AND CONNECTIONS
-FRONT PANEL CONTROLS AND INDICATORS
2
OPERATING INSTRUCTIONS
-OPERATION
-TEST LEAD CONNECTION DIAGRAM
3
CALIBRATION
4
PARTS LIST
5
PARTS ORDERING INFORMATION
6
RECOMMENDED SPARE PARTS
7
RETURNED MATERIAL
8
SCHEMATIC
9
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 tester is properly grounded before proceeding with a test.
3. Turn the tester off before reaching inside. Damage to the tester 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 hot 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 tester during disassembly and reassembly procedures.
10. This unit should only be operated by someone familiar with high voltage testing and safety
procedures.
1-2
PRODUCT INFORMATION
DESCRIPTION
The PAD10-25 is an AC/DC high potential tester with megohmmeter for AC and DC dielectric
withstand testing, insulation resistance and leakage testing, and high resistance measurements of
unknown resistances. These test capabilities make the PAD10-25 useful in testing a wide variety
of electrical apparatus including motors, cables, transformers, and other devices. It is capable of
voltages from 0-25 kV DC negative, 0-10 kV AC, and currents up to 5 mA DC and 10 mA AC.
Megohm readings from 0.1 to 5000 megohms at 500 VDC, 0.5 to 25000 megohms at 2500 VDC,
1 to 50000 megohms at 5000 VDC and 3 to 150000 megohms at 15000 VDC can be read directly
from the scale. Other megohm values can be calculated at different voltages by dividing voltage
reading in kilovolts by current reading in microamps and multiplying by 1000.
Examples:
3 kV ÷ 25 µA x 1000 = 120 megohms
10 kV ÷ 2500 µA x 1000 = 4 megohms
25 kV ÷ 1 µA x 1000 = 25,000 megohms
The unit incorporates an adjustable 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 “Current Trip” - “Low-High”. The trip
setting can be as low as 50 µA DC or as high as approximately 110% of rated output current.
Overcurrent trip is indicated by an audible alarm and an overcurrent lamp. The audible alarm may
be turned off if desired.
Other notable features include zero start interlock, external interlock provision, automatic internal
discharge device, guard circuit for stray leakage current bypass of currentmeter, 3-range
voltmeter, 2-range AC, 4-range DC currentmeter, and 4-range megohmmeter.
NOTE: Internal discharge device is for emergency situations only and should not be used for
rapid specimen discharge. In normal operation, the voltage control should be reduced to zero and
the voltage allowed to decay to zero or discharged with a discharge stick before switching high
voltage off. The internal discharge device operates automatically when: HV OFF is depressed,
when the overcurrent trip circuit is activated, or if incoming power is disconnected.
1-3
PRODUCT INFORMATION
SPECIFICATIONS
Input:
120 Volts AC, 50/60 Hz, single phase, 1.2 Amps
or
220 Volts AC, 50/60 Hz, single phase, .6 Amps
Output:
0-10 kV AC, up to 10 mA
0-25 kV DC, negative, up to 5 mA
Output Polarity: (DC)
Negative output, positive ground
Duty Cycle:
1 hour ON/1 hour OFF at full power levels
Voltmeter:
4 ½” analog meter, +2% of full scale
Three ranges: 0-5/10/25 kV
Currentmeter/Megohmmeter:
4 ½” analog meter, +2% of full scale
Current: 0-1/10 mA
0-10/100/1000/5000 µA DC
Megohms: .1-5/1-50/10-500/100-5000 megohms at 500 VDC
.5-25/5-250/50-2500/500-25000 megohms at 2500 VDC
1-50/10-500/100-5000/1000-50000 megohms at 5000 VDC
3-150/30-1500/300-15000/3000-150000 megohms at 15000 VDC
Operating Ambient Temperature:
10-38°C, 50-100°F
Termination:
Input: removable modular style 3 wire cord
High Voltage Output: 10’ shielded with insulated alligator clip
Return Lead: 10’ red lead with insulated alligator clip
Ground Lead: 10’ green lead with insulated alligator clip
Dimensions:
16.5” W x 15.25” D x 11.25” H (419 mm W x 388 mm D x 286 mm H)
Weight:
36 lbs. (16.4 kg), add 2 lbs. (1 kg) for 220 V
2-1
CONTROLS AND CONNECTIONS
FRONT PANEL CONTROLS AND INDICATORS
Fused Input Module:
Input cord is plugged in here. Module also contains F1 and F2 input fuses. Follow
instructions on fuse cover if replacing fuses.
External Interlock:
Jumper can be removed from provided plug and plug can then be wired to external
interlock devices that will supply non-energized closed contacts during testing.
Some examples include: footswitch, dead-man switch, panic button, gate interlock, etc.
High voltage output is disabled if external interlock circuit is open.
AC HV Bushing Well:
Output cable must be connected here for AC output; and currentmeter range switch
must be in one of the AC positions for correct metering. 0-10 kV AC at up to 10 mA will
be available here.
DC HV Bushing Well:
Output cable must be connected here for DC output; and currentmeter range switch
must be in one of the DC current or megohm settings for correct metering. 0-25 kV DC
at up to 5 mA will be available here.
HV Bushing Cover:
Place this cap on whichever HV bushing is not being used for operator and unit safety.
Voltmeter, VM Range SW:
Voltmeter indicates output voltage in kilovolts AC or DC. Scale is numbered in three
different ranges corresponding to L, M, or H (Low, Medium, or High) on range switch,
SW7, directly below voltmeter.
L:
Low Range, 0-5 kV (bottom scale). This range has the 500 Volt designation for the
direct reading megohmmeter function.
M: Medium Range, 0-10 kV (middle scale).
H: High Range, 0-25 kV (top scale).
Power On:
When depressed, this illuminated pushbutton latching switch (white lens) supplies control
power to unit, and lamp is on.
HV Off:
This momentary illuminated pushbutton switch (green lens) lights when high voltage is off.
Depressing switch turns high voltage off if on. It also silences audible alarm if on.
2-2
CONTROLS AND CONNECTIONS
FRONT PANEL CONTROLS AND INDICATORS (continued)
HV On:
Depressing this illuminated momentary pushbutton (red lens) will activate high voltage if
all the following conditions are met: Unit plugged in and power on switch depressed;
voltage control at zero start; interlock circuit not open; and overcurrent lamp not on.
Lamp is on if high voltage is on.
Voltage Control:
Control must be on zero start position before high voltage can be activated. Rotating
control allows voltage to be adjusted from 0 to 100% or full output in a clockwise direction
when high voltage lamp is on. 0-25 kV DC or 0-10 kV AC.
Reset: (Overcurrent)
Lamp lights if overcurrent circuit is tripped by a current value above that which is preset
on the overcurrent trip setting. Audible alarm will also sound if turned on. High voltage
will be disabled. Depress RESET to reset circuit.
Current Trip Adjust:
Turning knob toward low causes unit to trip at lower current levels, towards high will
increase current trip levels. Range is from approximately 50 µA DC to approximately
110% of rated output. When circuit is tripped, high voltage is disabled.
Current Trip Alarm:
If switch is on, audible alarm will sound when overcurrent circuit is tripped and overcurrent
lamp is on. High voltage will be disabled. To reset circuit, depress RESET switch.
Placing Current Trip Alarm switch to Off disables audible alarm.
Currentmeter/Megohmmeter, Currentmeter/Megohmmeter Range Switch:
The meter is scaled to read megohms on the top scales and mA AC or µA DC on the
bottom scale.
To use megohm scales, the HV output lead must be in the DC bushing well and the
output voltage must be adjusted to 500, 2500, 5000 or 15000 V.
The megohm multiplier is selected by the same six position switch as the currentmeter
range. This allows direct megohm readings at 500V, 2.5, 5 and 15 kV. In order to read
megohms directly, the kilovolt meter must be set to one of these voltages. The megohms
are then read from the right hand meter, megohms at 15 kV on the top scale, 5 kV on the
next to top scale, 2.5 kV on the third to top scale and megohms at 500V on the fourth to
top scale. The table below shows the megohm range for each switch setting and voltage.
Switch Setting
x100
x10
x1
x.1
500 V
100-5000
10-5000
1-50
.1-5
2.5 kV
500-25000
50-2500
5-250
.5 - 25
5 kV
1000-50000
100-5000
10-500
1-50
15 kV
3000-150000
300-15000
30-1500
3-150
To read DC µAmps, high voltage output lead must be in DC bushing well. Range switch
must be on one of the “DC CUR” settings. Always start reading with range switch on
highest setting (DC CUR X1K) and then switch to range that will display largest meter
movement without over ranging. Read lower scale of meter (0-10 µA) and multiply by
“DC CUR” multiplier of range which is selected.
2-3
CONTROLS AND CONNECTIONS
FRONT PANEL CONTROLS AND INDICATORS (continued)
To read the meter in AC milliamps, the high voltage output cable must be in the AC
bushing well. The currentmeter range switch must be set in one of the “AC CUR”
settings. Read the bottom currentmeter scale (0-10 mA) and multiply by the selected “AC
CUR” range switch multiplier.
Return Post:
The return or low potential side of the test specimen should always connect to the Return
Post. Current through this post is measured by the currentmeter.
Ground Post:
This post is tied to the unit ground and is to be connected to a good earth ground where
unit is being operated. There is also a jumper clip on this post that must be connected to
either the Return post or the Guard post. When the clip is connected to Return and
Ground, the unit is considered to be in “Return Mode” or “Grounded Return Mode”. In
“Return Mode” all currents to Return or Ground, will pass through currentmeter, including
stray leakage currents. When the clip is connected to Guard, the unit is considered to be
in “Guard Mode”.
Note: If the test specimen return or low potential side is already at ground potential and
will be left that way for the test, then only the “Return Mode” or “Grounded Return Mode”
can be used for the test. If “Guard Mode” operation is attempted, the Currentmeter/
Megohmmeter will not function properly. See connection diagram at end of Operation
section.
Guard Post:
When this post is connected to ground with the jumper clip, it is in “Guard Mode”. Any
stray leakage currents to ground will not be measured by the meter. The low potential
side of the test specimen must be isolated from ground in this mode. Connect current
paths that need to bypass currentmeter to this point. Any currents connected to Guard
will bypass the currentmeter.
If the low potential side of the test specimen cannot or will not be isolated from ground,
“Guard Mode” must not be used.
3-1
OPERATING INSTRUCTIONS
CAUTION: This unit produces high voltages that can cause harmful or fatal
electrical shock. Only persons familiar with high voltage testing and safety
procedures should operate this equipment. Review safety and caution
notes, page 1-1, before proceeding.
Review or know all operating
instructions before applying power to test unit.
1. Prepare a safe and secure area where test is being conducted.
2. Review Description in Section 1 and Controls and Connections in Section 2 if needed to
become familiar with unit.
3. Remove input cord and test leads from cable storage area in case cover. Plug input cord into
input module on unit but do not plug into power source until test specimen is properly
connected.
4. Do not connect any test leads to any test specimen until certain that it is de-energized and
discharged.
5. Set the jumper clip on the Ground Post for either “Grounded Return Mode” or “Guard Mode”
as desired for test to be conducted (See connection illustration at end of this section).
The standard mode for testing is the “Grounded Return Mode” where the Ground Post and
Return Post are connected together with the jumper clip. Normally, the Guard Post will not be
used in this mode and all output currents including all stray leakage currents to ground will be
measured. The provided green lead will be connected to the Ground Post and to a good
earth ground or station ground near test unit or test sample. The provided red lead will be
connected to the Return Post and the low potential side of the test specimen. If any stray
currents are to be “guarded” from return or bypassed in this mode, the current source must be
isolated from ground and specimen return. If the source connected to Guard is grounded or
not isolated from return, the Currentmeter/Megohmmeter will be inaccurate or disabled.
If Guard Mode is desired, connect the jumper clip from Ground Post to Guard Post. Red lead
will connect to Return Post and low potential or return side of test specimen. Green lead will
connect to Ground Post and to good earth or station ground at test area. When using Guard
Mode, any stray leakage currents to ground and any current sources connected to Guard will
be “guarded” from return and will bypass the Currentmeter/Megohmmeter. The
Currentmeter/Megohmmeter will read only the test specimen current. In this mode, the test
specimen low potential side must be isolated from ground or the Currentmeter/Megohmmeter
will be defeated. If the test specimen return cannot be isolated from ground, the “Guard
Mode” of operation cannot be used.
The jumper clip must always be connected from Ground Post to either the Guard Post or
Return Post. DO NOT OPERATE UNIT WITHOUT JUMPER CLIP PROPERLY INSTALLED!
3-2
OPERATING INSTRUCTIONS
6. With unit still disconnected from power source, and after verifying that test specimen is deenergized and discharged, connect output leads for the selected mode of operation (Guard
Mode or Grounded Return Mode). See diagram at end of this section.
Assure that external interlock circuit is connected and operational if being used or that
jumpered plug is installed in jack, Power On button is in raised or off position, and Voltage
Control is set to Zero Start.
Set Current Trip Alarm switch to On or Off as desired. When on, an audible alarm will sound
when current trip circuit is activated. Pressing RESET will silence alarm and reset current trip
circuit.
Set voltage range switch for desired scale corresponding to anticipated output voltage
needed.
7. Set up for one of the following modes:
AC Output Mode 0-10 kV AC, up to 10 mA output.
High Voltage output lead must be placed in the AC output bushing well. Place protective cap
on DC bushing well. Current range switch must be set to one of the “AC CUR” settings
usually starting at AC CUR X1 setting (highest AC setting). This is the mode to be used for all
AC testing such as AC Dielectric, AC Withstand, AC Leakage, and AC Hipotting. Output
voltage is read directly in kilovolts on one of the three selected scales of the voltmeter (Low5kV, Medium-10kV, High-25kV). L = 0-5 kV AC, M = 0-10 kV AC, H = 0-25 kV AC. (Unit will
only put out slightly over 10 kV AC on 25 kV scale.) AC current is read directly off the lower
scale of the currentmeter (0-10) in milliamps and multiplied by the multiplier of the range
switch setting for AC, either times .1 or times 1. “AC CUR” X1 = 0-10 mA AC. “AC CUR X.1
= 0-1 mA AC. Voltage is adjusted with Voltage Control. Always (except for an emergency)
return voltage control to zero and allow voltmeter to decay to zero before switching high
voltage off.
DC Output Mode: 0-25 kV DC, negative output, 0-5000 µA (0-5 mA).
High Voltage output lead must be placed in the DC output bushing well. Place protective cap
over AC bushing well. Current range switch must be set to one of the “DC CUR” settings
usually starting at “DC CUR” X1K (highest DC setting). This is the mode to be used for DC
testing such as DC Dielectric, DC Withstand, DC Leakage, DC Hipotting, and Megohm
calculations for values above those that can be read directly in the megohmmeter mode.
Output voltage is read directly in kilovolts DC on one of the selected scales of the voltmeter
(Low-5kV, Medium-10kV, High-25kV). L = 0-5 kV DC, M = 0-10 kV DC, H = 0-25 kV DC. DC
current is read directly off the lower scale of the currentmeter in microamps and multiplied by
the selected “DC CUR” range multiplier value (X1K, X100, X10, X1).
“DC CUR” X1K
X100
X10
X1
=
=
=
=
0-10,000 µA DC (unit only rated at 5,000 µA DC)
0-1,000 µA DC
0-100 µA DC
0-10 µA DC
Voltage is controlled by Voltage Control. Always (except for an emergency) return voltage
control to zero and allow output voltage to decay to zero or discharged with a discharge stick
before turning high voltage off.
3-3
OPERATING INSTRUCTIONS
Megohmmeter Mode: .1-150,000 megohms direct reading scale.
High voltage output lead must be placed in the DC output bushing well. Place protective cap
over AC bushing well. Start with Currentmeter/Megohmmeter range switch in “Megohms” X.1 position. Voltmeter range switch must be set at “5kV”. Connection of output leads to
test specimen is to be either “Grounded Return Mode” or Guard Mode as described in Step 5
previously and shown in diagram at end of this section. The Currentmeter/Megohmmeter
megohms scale is only accurate with at output voltages of 500 Volts, 2.5kV, 5kV or 15kV.
Megohms are determined by reading the megohm scale corresponding to the voltage
applied and multiplying by megohm range multiplier (X.1, X1, X10, X100). The range that
produces the largest meter deflection without over-ranging is usually the most accurate and
easy to read.
The table below shows the megohm range for each switch setting and voltage.
Switch Setting
x100
x10
x1
x.1
500 V
100-5000
10-5000
1-50
.1-5
2.5 kV
500-25000
50-2500
5-250
.5 - 25
5 kV
1000-50000
100-5000
10-500
1-50
15 kV
3000-150000
300-15000
30-1500
3-150
Megohm values at other voltages or higher megohm readings than those that can be
obtained directly on the megohm scale can be calculated by dividing the output voltage in
kilovolts by the current in microamps and multiplying the result by 1,000. (Megohms = kV ÷
µA x 1000).
Examples: 6 kV ÷ 2 µA x 1,000 = 3,000 megohms
16 kV ÷ .8 µA x 1,000 = 20,000 megohms
20 kV ÷ 4 µA x 1,000 = 5,000 megohms
25 kV ÷ .5 µA x 1,000 = 50,000 megohms
Note: When using this method, be careful to not overvoltage or overwattage the test
specimen. Additionally, at 5 kV output voltage, the megohm scale can be read directly,
multiplied by the megohm range multiplier value and that result multiplied by 10 for the
megohm value of specimen.
(Megohm scale reading X megohm range multiplier X10 = specimen megohms at 5 kV.)
When megohm test is complete, always (except for an emergency) return voltage control to
zero and allow voltmeter to decay to zero or discharge with a discharge stick before turning
off the high voltage.
8. Current Trip Circuit
If full output of unit is desired before current trip activates, set “Min”-“Max” knob fully clockwise
to “Max”. Trip circuit will not activate until current rises above rated output.
Other trip levels can be set by using an appropriate value resistor between high voltage and
return and adjusting voltage to obtain desired trip current. Rotate “Min”-“Max” knob toward
“Min” (CCW) slowly until trip circuit activates. Reset by depressing RESET. Turn voltage
control to zero and depress HV ON. Raise voltage control slowly to verify trip setting. Some
trial and error fine tuning may be necessary if level is very specific. Resistances of several
megohms may be needed to set very small current trip levels.
3-4
OPERATING INSTRUCTIONS
After current trip circuit has been activated, RESET switch will need to be depressed and
Voltage Control returned to Zero Start before high voltage can be re-activated. When current
trip activates, high voltage is automatically turned off and internal discharge circuit is applied
to output.
Flashovers will normally activate trip circuit.
9.
When all test leads of the unit and test specimen are properly connected and all the controls
are set to the proper presets (main power switch off), the input power cord can be plugged
in to a properly grounded receptacle having the rated input voltage for unit. If the test area
is now secure and safe, the “POWER ON” switch can be turned on. If everything is still
okay, HV ON can be activated and testing can be started. If using as megohmmeter,
remember that scale is calibrated at 500 V output only.
10.
When testing is completed on test specimen, turn Voltage Control to Zero Start and allow
voltmeter to decay to zero. When voltmeter has reached zero, depress HV OFF. Turn main
power off. Unplug unit. Use hot stick or high voltage discharge stick on specimen before
disconnecting test leads. Set up for next test or secure and store unit until needed again.
3-5
INSTALLATION AND OPERATION INSTRUCTIONS
NOTES CONCERNING THE USE GUARD AND GROUND
NORMAL MODE CONFIGURATION
In this configuration the Return and Ground is connected together with an external jumper or a
switch internal to the Test Set, depending on the design. Nothing is connected to the Guard.
Both stray leakage to earth ground and leakage through the Test Specimen is indicated on the
current meter. This configuration should be used if it is not possible to isolate the return side of
the Test Specimen from earth ground.
High
HIGH VOLTAGE
TRANSFORMER
Stray
Leakage
Amp
Test
Specimen
Ground
Return
Ground
Guard
Return or Low
Side
3-6
INSTALLATION AND OPERATION INSTRUCTIONS
GUARD MODE CONFIGURATION
In this configuration the Guard and Ground is connected together with an external jumper or a
switch internal to the Test Set, depending on the design. Any current associated with the Return
is indicated on the current meter. Any current associated with the Guard bypasses the current
meter. Leakage current through the test specimen is indicated on the current meter. Stray
leakage to earth ground is not indicated on the current meter. This configuration can not be used
if it is not possible to isolate the return side of the Test Specimen from earth ground.
High
HIGH VOLTAGE
TRANSFORMER
Stray
Leakage
Amp
Test
Specimen
Ground
Return
Ground
Guard
Return or Low
Side
4-1
CALIBRATION
All calibrations have been done at the factory. Periodic calibration of the output voltmeter and
output currentmeter should be done approximately every 12 months.
Calibration should only be performed by individuals qualified and knowledgeable in high voltage
calibration using highly accurate calibration equipment.
Location of Calibration Adjustments
The calibration potentiometers are located on the printed circuit board inside the unit. If
recalibration is necessary, the unit must be removed from the case by removing the front panel
perimeter screws and the two nuts on case bottom. Next, carefully lift unit out of case. Check
that re-calibration is necessary before removing from case.
The voltmeter has calibration for each range for both, AC and DC, labeled 5kV, 10kV, and 25kV.
The currentmeter has two calibrations for AC current, AC-X.1 and X1, and three calibrations for
DC current, DC-X1K, X100, and X10.
Electrical references to these potentiometers are shown on the schematic diagram.
Overcurrent limits are factory set and not adjustable for calibration.
Calibration Procedure
The Ground jumper clip should be between Ground and Guard. Assure that HV output cable and
currentmeter range switches are both in either the AC Mode or DC Mode being checked.
1. Output Voltmeter
Configure unit for DC Mode and perform calibration for DC ranges. Reconfigure unit for AC
Mode and repeat procedure with AC calibration.
Connect a precision high voltage voltmeter between high voltage output and Return binding
post on front panel. Place voltmeter range switch to the LOW range position (5kV). Energize
test set and raise output voltage to approximately 80% of the full scale deflection. Compare
panel meter on test set to standard voltmeter. If recalibration is necessary, adjust the panel
meter reading by turning the LOW (L) calibration potentiometer. Check linearity and calibration at various points on scale (i.e. 20%, 40%, 60%, and 100% of full scale).
Repeat the above procedure for medium and high voltmeter ranges. If recalibration is
necessary, adjust the proper calibration potentiometers MEDIUM (M) or HIGH (H). Assure
that the proper potentiometer for the range and mode is being adjusted.
DC Voltage
Range
AC Voltage
Range
L - R24
M - R26
H - R28
0-5 kV
0-10 kV
0-25 kV
L - R18
M - R20
H - R22
0-5 kV
0-10 kV
0-10 kV (not full scale)
4-2
CALIBRATION
2. Output Currentmeter
Configure unit for DC Mode and perform DC calibration. Reconfigure unit for AC Mode and
repeat procedure for AC calibration. AC calibration will be at X.1 and X1 only.
Connect a precision ammeter between high voltage output lead and Return binding post on
front panel. NOTE: To ensure precise control over output current, it may be necessary to
insert a 200 K Ohm, 10 Watt resistor in series with the high voltage output lead. Place
currentmeter range switch to X1 position. Energize test set and CAREFULLY raise output
current to approximately 80% of the full scale deflection. Compare panel meter to standard
currentmeter. No recalibration should be necessary in DC-X1 as the currentmeter is a 10
micro ampere full scale movement. If recalibration is required, the meter should be replaced.
Check linearity and calibration at various points on scale (i.e. 20%, 40%, 60%, and 100% of
full scale).
Place meter range switch in the X10 position. Raise output current to 80% of full scale. If
recalibration is necessary, adjust calibration potentiometer labeled X10. Check linearity at
various points on the scale.
Repeat procedure for X100 and X1K currentmeter ranges. If recalibration is necessary,
adjust the proper calibration potentiometers X100 and X1K.
DC Current
Range
AC Current
Range
X1 - No calibration
X10 - R15
X100 - R13
X1K - R11
0-10 µA
0-100 µA
0-1000 µA
0-5000 µA (half scale)
X.1 - R7
X1 - R9
0-1 mA
0-10 mA
5-1
PARTS LIST
PAD10-25
Assembly No. 9109090
ITEM
CONTROL PANEL
INPUT CORD
INPUT CON.
F1,F2 (120V)
F1,F2 (220V)
EXT. INTLK.
EXT. INTLK.
EXT. INTLK.
EXT. INTLK.
EXT. INTLK.
GUARD
GROUND
RETURN
HV OUTPUT JACK
JACK COVER
HANDLE
KNOB SW6,7,R9
M1
M2
PL1-LENS
PL2-LENS
PL3-LENS
PL4-LENS
PL1-4 LAMP
R4
SHORTING BAR
SG1,2
SW1,PL1
SW2,3,4/PL2,3,4
MICRO SW
SW6
SW7
SW8
T1
PLUG
RECEPTACLE
PINS-MALE
PINS-FEMALE
DESCRIPTION
CONTROL PANEL
RIGHT ANGLE MODULAR POWER CORD
CORCOM 6VM1 FUSED POWER MODULE
2 AMP GDC 250 V FUSE
1 AMP GDC 250 V FUSE
CHASSIS CONNECTOR
CRIMP PINS-FEMALE (CHASSIS CONNECTOR)
CABLE CONNECTOR
CABLE CLAMP
SOLDER PINS-MALE
WHITE BINDING POST
GREEN BINDING POST
RED BINDING POST
UG1094/U, BNC PNLMT STD
31-026 MALE CAP, BNC
ALUMINUM HANDLE
RANGE SW, CURRENT TRIP ADJ. KNOBS
CURRENTMETER/MEGOHMMETER-BEEDE
VOLTMETER-MODUTEC
POWER ON-CLEAR LENS 31-903.7
OVERCURRENT-BLUE LENS 31903.6
HV ON-RED LENS 31-903.2
HV OFF/RESET-GREEN LENS 31-903.5
28 VOLT EAO LAMP 31-963.2
OVERCURRENT ADJ. POT 100 KOHMS
GROUND-GUARD/RETURN JUMPER CLIP
90 VOLT SPARK GAP
POWER ON-EAO 2 POLE LATCH SW. W/LAMP
EAO 1 POLE MOM. SW. W/LAMP
ZERO START SWITCH ON T1
CURRENTMETER/MEGOHMMETER RANGE SW.
VOLTMETER RANGE SW.
BUZZER ON-OFF SW.
VOLTAGE ADJ. TRANSFORMER-VARIABLE
15 PIN MOLEX PLUG
15 PIN MOLEX RECEPTACLE
MOLEX PINS-MALE
MOLEX PINS-FEMALE
QTY
PART NO.
1
1
2
2
1
2
1
1
2
1
1
1
2
1
2
3
1
1
1
1
1
1
4
1
1
2
1
3
1
1
1
1
1
1
1
9
9
1077170
1152590
1603702
1603701
1151152
1151174
1151162
1151186
1151176
1351104
1351103
1351102
1153065
1150510
2101710
1355310
1500210
1501010
1422153
1422148
1422150
1422151
1420145
1761954
1351110
1605110
1860265
1860120
1866015
1863046
1863047
1865010
1890100
1153912
1153932
1153935
1153915
5-2
PARTS LIST
ITEM
QTY
PART NO.
CASE- GEMINI 01100531 (Modified)
PHENIX LOGO
230V-115V AUTO TRANSFORMER
1
1
1
2100505
2980265
1894427
PCB1218 ASSY.
VOLTMETER/CURRENTMETER/OVERCURRENT
BD.
1
31121800
PCB
BZ1
C1
C2
C3
C4
C7
C9
D1-7
D8
K1
K1
K2
NE2,3
R1
R2
R3,16
R5
R6
R7
R8
R9,XR2
R10
R11
R12
R13
R14
R15
R17
R18,26
R19,27
R20,28
R21
R22
R23A
R23B
PCB 1218 PAD10-25 CKT. BD.
24V, 35MA BUZZER
1000 µf, 50 V
.1µf, 20V
.47 µf 250V
.22 µf, 100V
1µf, 25V
10 µf 20V
1N4007 (1000VR, 1.0A)
TYPE 1.5KE12A TRANZORB (1N6273A 10V)
27E046 KUP 3P, 24VDC RELAY
RELAY SOCKET
24VOLT 2POLE RELAY (#NF2EB-24V)
NE-2 NEON
.5W, 5.1K
.25W, 49.9K, 1%, MF
.25W, 499K, 1% MF
.5W, 250 OHM, 1%
12K, 1/4W, 1% MF RES.
5K, TYPE 43P
.25W, 909 OHM, 1%, MF
500 OHMS, TYPE 43P
.25W, 402 OHM, 1% MF
200 OHMS, TYPE 43P
.5W, 4K, 1%
2K, TYPE 43P
RESISTOR 45.3K, 1/4W, 1%
20K, TYPE 43P
180K, 1/4W, 1% MF RES.
100K, TYPE 43P
69.8K, 1/4W, 1% MF RES.
50K, TYPE 43P
24.9K, 1/4W, 1% MF RES.
10K, TYPE 43P
.25W, 1M, 1%, MF
300K, 1/4W, 1% MF RES.
1
1
1
1
1
1
1
1
7
1
1
1
1
2
1
1
2
1
1
1
1
2
1
1
1
1
1
1
1
2
2
2
1
1
1
1
1112180
1424015
1098940
1093020
1093365
1093150
1094025
1095800
1780025
1780063
1700615
1157600
1701366
1609990
1712110
1734050
1734499
1720250
1722605
1761052
1733093
1760500
1733040
1760200
1722093
1761020
1722620
1761110
1722635
1761950
1722625
1761502
1722617
1761090
1735000
1722645
CASE/CHASSIS
CASE
LOGO
T4 (220V)
DESCRIPTION
CASE/CONTROLS/OVLD
5-3
PARTS LIST
ITEM
PCB 1218 ASSY.
R24
R25
R30
SCR1
T3
SPACERS
CON1
CON2
CON2
CON3
CON3
CON4
CON4
C8-A
C8-B
C8-C
DESCRIPTION
(Continued)
500K, TYPE 43P
.25W, 249K, 1% MF
.5W, 500K, 1%
C106M1
LP34-170
SPCR ¾ X 6-32
CONN. & PLUG 20 PIN
HDR 8CKT.1
CON 8CKT.1
HDR 10CKT.1
CON 10CKT.1
CON 2 CKT.1
CON 2 CKT.1
CAP. (20WVDC, 15 µf)
10 µf 20V
CAP. (25WVDC, 2. µf)
QTY
PART NO.
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1762075
1731252
1725000
1803101
1894395
1350310
1152620
1152286
1152285
1152211
1152210
1152200
1152201
1096100
1095800
1094430
RED BOOT
BLACK BOOT
CLIP
COMPLETE HIGH VOLTAGE CABLE
COMPLETE RETURN CABLE
COMPLETE GROUND CABLE
BNC CONN.
RED ALLIGATOR BOOT
BLACK ALLIGATOR BOOT
ALLIGATOR CLIP
1
1
1
1
2
1
3
30070014
30080004
30080005
1153075
1353000
1353001
1353002
SOL1
R34-R36
D9,10
R37
R33,32
INPUT
C5,6
T2
MOV1
HV UNIT
4X239 SOLENOID
10W, 20K
#SL1200 (12KV-40MA)
6W,75MEG, 1% ROX4
RES. 1W, 50 MEG, 5%
250-S LUNDEY
CAPACITOR, .006 uF, 35kV
1 PHASE-HV GO-59
MOVISTOR V130LA10A
1
3
8
1
8
7
6
1
1
1704205
1742400
1782000
1748200
1716197
2410050
1091600
38340059
1606100
CABLES/CLIPS
HV CABLE
RETURN CABLE
GROUND CABLE
6-1
PARTS ORDERING INFORMATION
Replacement parts are available from Phenix Technologies, Inc.
Changes to Phenix Technologies' products are sometimes made to accommodate improved
components as they become available, and to give you the benefit of the latest technical
improvements developed in our Engineering Department. It is, therefore, important when ordering
parts to include the serial number of the unit as well as the part number of the replacement part.
When your purchase order is received at our office, a representative of Phenix Technologies will
contact you to confirm the current price of the part being ordered. If a part you order has been
replaced with a new or improved part, an Applications Engineer will contact you concerning any
change in part number.
Your order for replacement parts should be sent to:
Replacement Parts Department
Phenix Technologies, Inc.
75 Speicher Drive
Accident, Maryland 21520
7-1
RECOMMENDED SPARE PARTS
Phenix Technologies recommends that the customer purchase and stock the following parts for
normal maintenance of the unit. The recommended quantity should be sufficient to support the
unit during normal operation.
If the unit will be operated at an isolated site for an extended period or will be subjected to unusual
stresses, a larger quantity of parts should be stocked as spares. In such a case, contact your
Phenix Technologies' sales representative for a recommendation.
Current prices may be obtained by contacting the Parts Ordering Department at Phenix
Technologies.
Computer
Recommended
Part Name
Number
Quantity
Fuses for F1 and F2
2AGDC-250V (120 V)
1AGDC-250V (220 V)
1603702
1603701
4
4
Indicator Lamps
EAO, 28 V, 31-963.2
1420145
4
Lens Puller Tool
Lamp Extractor
142210
142010
1
1
HV Output Cable
Return Cable
Ground Cable
30070014
30080004
30080005
1
1
1
8-1
RETURNED MATERIAL
If for any reason it should become necessary to return this equipment to the factory, the Service
Department of Phenix Technologies, Inc. must be given the following information:
Name Plate Information
Model Number
Serial Number
Reason for Return
Cause of Defect
If Phenix Technologies, Inc. deems return of the part appropriate, it will then issue an
"Authorization for Return".
If return is not deemed advisable, other inspection arrangements will be made.
NOTE: Material received at this plant without the proper authorization shall be held as
"Customer's Property" with no service until such time as the proper steps have been taken.
Your cooperation is requested in order to ensure prompt service.
9-1
SCHEMATIC
1.
9109090
Sheet 1
AC-DC Hipot/Megger PAD10-25