Post Glover PULSERPLUS PRO Manual

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
PGR Document #HG111-06© 2006 Post Glover Resistors, Inc.
PulserPlus Pro™ NEMA 1
Freestanding Unit
PulserPlus Pro™ Operator Interface

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
PGR Document #HG111-06© 2006 Post Glover Resistors, Inc.
PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
© 2006 Post Glover Resistors, Inc. 2
Table of Contents
Section 1 Equipment Overview........................................................................................... 3
Section 2 Operational Description ...................................................................................... 4
2.1 Normal Operation ............................................................................................... 4
2.2 Loss of Ground ................................................................................................... 4
2.3 Ground Fault ....................................................................................................... 4
2.4 High 3rd Harmonics............................................................................................. 5
2.5 Summary of Events............................................................................................. 6
Section 3 Installation........................................................................................................... 7
3.1 Receiving ............................................................................................................ 7
3.2 Handling.............................................................................................................. 7
3.3 Storage ............................................................................................................... 7
3.4 Floor Preparation ................................................................................................ 7
3.5 Grounding ........................................................................................................... 7
3.6 Line and Control Connections ............................................................................ 8
3.7 Setting Resistor Tap Connections ...................................................................... 8
3.8 General ............................................................................................................... 8
Section 4 Start-up Procedure ............................................................................................. 9
4.1 Energize Circuit................................................................................................... 9
4.2 Entering Setup Information ................................................................................. 9
4.3 Ground Fault Alarm Test..................................................................................... 9
Section 5 System Capacitive-Charging Current................................................................ 11
5.1 General .............................................................................................................. 11
5.2 Test Procedure................................................................................................... 11
5.3 Test Results ....................................................................................................... 13
Section 6 Controller Setup................................................................................................. 14
6.1 Power-up Display ............................................................................................... 14
6.2 Adjustable Parameters ...................................................................................... 14
 6.3 CongurationMode ........................................................................................... 15
6.4 Measurement Enable......................................................................................... 15
6.5 Current Transfomer Ratio .................................................................................. 15
6.6 Hi Limit Setpoints............................................................................................... 16
6.7 Lo Limit Setpoints .............................................................................................. 16
6.8 Pulsing Timer ..................................................................................................... 17
6.9 Alarm Delay ....................................................................................................... 17
6.10 Auto Reset ......................................................................................................... 17
Section 7 Locate a Ground Fault ....................................................................................... 18
Section 8 Maintenance ...................................................................................................... 19
Section 9 Schematics & Dimension Drawings................................................................... 20
CAUTION! Before any servicing, replacement of parts, adjustment, or any other work is performed requiring
physical contact with the electrical working components of this unit, power supplies to the unit must be disconnected.

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
PGR Document #HG111-06© 2006 Post Glover Resistors, Inc.
PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
© 2006 Post Glover Resistors, Inc. 3
Section 1 – Equipment Overview
Post Glover High Resistance Grounding Equipment coordinates the use of resistors and control devices, creating
a high-resistance ground for a power system. The grounding equipment has these features:
Overvoltage Reduction:
Reduces the transient over voltages that can occur during arcing-type faults.
Fault Detection:
 Providesanindicationwhentherstgroundfaultoccurs.Anadjustabletimedelayisincludedtoeliminate
nuisance faults.
Fault Tracking:
Helps to locate the fault by producing a tracer signal of current pulses easily distinguishable from background
noise.
Operation Protection:
Enables the system to continue operation with a single line-to-ground fault present.
Harmonic Detection:
Provides an indication when third harmonics exceed a preset value. An adjustable time delay is included to
eliminate nuisance faults.
Arc Flash/Blast Reduction:
Eliminates hazardous energy during ground faults, which are present in 90% of all electrical faults.
This instruction booklet is intended as a general guidance tool for personnel installing Post Glover High
ResistanceGroundingSystems.However,eachunitisdesignedforaspecicapplication/installation.The
detailed drawings provided with each unit supersede the general information provided in this booklet.
NOTE: Any work performed on this unit should be done by qualied persons and must be done in compliance
with national, regional, local and site-specic safety procedures.

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
PGR Document #HG111-06© 2006 Post Glover Resistors, Inc.
PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
© 2006 Post Glover Resistors, Inc. 4
Section 2 – Operational Description
2.1 Normal Operation
Please refer to the drawings supplied with your unit for ratings and other information. Section 9 contains
schematics and dimension drawings with information for standard systems. For low-voltage systems, Figures 3
and 4 show wye-connected and delta-connected schematics respectively. For medium-voltage systems, wye-
connected and delta-connected schematics can be found in Figures 5 and 6 respectively.
Duringnormaloperation,onlyaninsignicantcapacitive-chargingcurrent,unbalancedharmoniccurrent,and/or
leakagecurrentowsthroughtheresistor(Adescriptionofcapacitive-chargingcurrentisprovidedinSection
5). The display will show this current and/or voltage. The green NORMAL indicating light on the operator’s panel
will be illuminated.
The PulserPlus Pro™ controller detects Fundamental Current and/or Voltage and 3rd Harmonic Current and/or
Voltage for both over- and under-conditions. Each of the four can be independently disabled by turning the feature
OFF, and the under-conditions can be disabled by entering a 0 value. A common time delay setting is used for all
Fundamental alarming and a separate common time delay setting is used for all 3rd Harmonic alarming.
2.2 Loss of Ground
Whenthecurrentmentionedabovegoestozero,typicallythisindicatesaLossofGroundcondition(i.e.
grounding wire failure). If this occurs, the system will be Ungrounded. The PulserPlus Pro™ controller has an
Under-Current / Under-Voltage feature that detects this condition for both Fundamental and 3rd Harmonics.
Upon detection, the green NORMAL indicating light will turn off and its auxiliary form-C contacts change state.
This feature can be disabled by setting its value to zero.
2.3 Ground Fault
When a ground fault occurs, the resistor acts to limit the ground current to a pre-determined low value. Fault
current magnitude can be set by adjusting the taps provided on the resistor. Fault current shall be set so that
thefaultcurrentisslightlygreaterthanthesystem’snaturalcapacitive-chargingcurrent(seeSection5).
The fundamental voltage appearing across the resistor or the fundamental amperage through the resistor is
sensed by the PulserPlus Pro™ controller. To prevent nuisance indications, a variable time delay is entered via
the operator’s panel. When the time delay expires, the red GROUND FAULT indicator light will start to blink,
the NORMAL indicator light will turn off, and an alarm horn will sound. Upon detection, SYSTEM NORMAL and
GROUND FAULT auxiliary form-C contacts change state.
The alarm horn can be silenced by pressing the ALARM SILENCE button while searching for the cause of the
ground fault. The red GROUND FAULT indicator light will continue blinking until the ground fault is removed and
the system is manually reset by pressing the RESET and ALARM SILENCE buttons. Optionally, the PulserPlus
Pro™canbeconguredforauto-reset.

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
PGR Document #HG111-06© 2006 Post Glover Resistors, Inc.
PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
© 2006 Post Glover Resistors, Inc. 5
The Under-Voltage / Under-Current feature for 3rd Harmonics can also be used for detecting Ground faults near
theneutralofawyeconnectedgenerator.DuringaGroundFaultneartheneutral,thevoltagemaynotbesufcient
to drive enough current for Ground Fault detection. However, the typical 3rd harmonic caused by fractional pitched
generators will be shorted and the value will go to 0.
To prevent nuisance indications, the adjustable time delay setting can be manipulated via the operator’s panel. The
PulserPlus Pro™ controller does know the difference between this condition and a Loss of Ground condition, so
only the green NORMAL indicating light will turn off and the SYSTEM NORMAL auxiliary form-C contacts change
state.
2.4 High 3rd Harmonics
High 3rd harmonics are also sensed by the PulserPlus Pro™ controller. An upper limit is set by the user for
detection of current or voltage across the resistor. After a time delay expires; the amber THIRD HARMONIC
indicator light will illuminate, the NORMAL indicator light will turn off, and an alarm horn will sound. Upon detection,
the SYSTEM NORMAL and THIRD HARMONIC auxiliary form-C contacts change state.
The alarm horn can be silenced by pressing the ALARM SILENCE button while searching for the cause of the third
harmonic fault. The amber THIRD HARMONIC light will remain illuminated until the condition is removed and the
system is manually reset by pressing the RESET and ALARM SILENCE buttons. Optionally, the PulserPlus Pro™
canbeconguredforauto-reset.
A Summary of Events is shown on the following page.

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
PGR Document #HG111-06© 2006 Post Glover Resistors, Inc.
PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
© 2006 Post Glover Resistors, Inc. 6
Field Condition
Over-Voltage Over-Current
Under-Voltage Under-Current
2.5 Summary of Events
Fundamental VoltageHarmonic Voltage
Fundamental CurrentHarmonic Current
On
Off
On
Off
On
Off
On
Off
1) Display changes to Fnd Vlt Hi Limit 2) Fundamental timer begins and expires 3) Normal light turns off 4) System Normal relay changes state 5) Ground Fault light blinks 6) Grd Fault Alarm relay changes state 7) Internal horn sounds 8) External Horn relay changes state
No display or monitoring No display or monitoring No display or monitoring No display or monitoring No display or monitoring No display or monitoring No display or monitoring No display or monitoring
IF ENABLED, SET TO 0 TO DISABLE. 1) Display changes to Fnd Vlt Lo Limit 2) Fundamental timer begins and expires 3) Normal light turns off 4) System Normal relay changes state
1) Display changes to Fnd Amp Hi Limit 2) Fundamental timer begins and expires 3) Normal light turns off 4) System Normal relay changes state 5) Ground Fault light blinks 6) Gnd Fault Alarm relay changes state 7) Internal horn sounds 8) External horn relay changes state
IF ENABLED, SET TO 0 TO DISABLE. 1) Display changes to Fnd Amp Lo Limit 2) Fundamental timer begins and expires 3) Normal light turns off 4) System normal relay changes state
IF ENABLED, SET TO 0 TO DISABLE. 1) Display changes to Hrm Vlt Lo Limit 2) Harmonic timer begins and expires 3) Normal light turns off 4) System normal relay changes state
IF ENABLED, SET TO 0 TO DISABLE. 1) Display changes to Hrm Amp Lo Limit 2) Harmonic timer begins and expires 3) Normal light turns off 4) System Normal relay changes state
1) Display changes to Hrm Vlt Hi Limit 2) Harmonic timer begins and expires 3) Normal light turns off 4) System Normal relay changes state 5) Third Harmonic light blinks 6) Third Harmonic relay changes state 7) Internal horn sounds 8) External Horn relay changes state
1) Display changes to Hrm Amp Hi Limit 2) Harmonic timer begins and expires 3) Normal light turns off 4) System Normal relay changes state 5) Third Harmonic light blinks 6) Third Harmonic relay changes state 7) Internal horn sounds 8) External Horn relay changes state
Presing Alarm Silence Button: 1) Turns off Internal horn 2) Resets External horn relay
Pressing Pulse Button: 1) Amber light blinks 2) Pulsing relay begins
Pressing Reset Button: 1) Resets Display 2) Resets all latching relays 3) Only does above if Auto Reset is turned off
Pressing Reset and Down Arrow Buttons: 1) Enters Setup mode

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
PGR Document #HG111-06© 2006 Post Glover Resistors, Inc.
PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
© 2006 Post Glover Resistors, Inc. 7
Section 3 – Installation
PostGloverHighResistanceGroundingSystemsarepackagedinavarietyofdifferentcongurationsdepending
on the ratings and site requirements. The typical low-voltage and medium-voltage enclosures are shown in
Section9.ConsultallspecicequipmentdrawingsfurnishedbyPostGloverResistors,Inc.,foryourparticular
installation.
3.1 Receiving
Once received, the crated high-resistance grounding unit should be unloaded and carefully moved by overhead
crane or forklift. A preliminary inspection of the crate should be made at this point to ensure that the unit was
handledproperlyduringshipment.Ifdamageisdetected,contactthecarrierimmediatelytoleaclaim.
3.2 Handling
Free-standing units have removable lifting angles for an overhead crane to use when moving the unit. Do not
attempt to move or lift the unit at points other than the lifting angles or base channels. Never store the unit on its
side or top as this could cause damage. Do not stack the units.
3.3 Storage
If the unit will be stored for some length of time, take the following precautions:
1. Remove the crate and thoroughly inspect the unit.
2. Store the unit in an area that is clean and dry and has moderate temperatures. Cover it with a heavy-duty
plastic cover or cloth.
3. If the unit must be stored in a damp area, it should be completely covered and heat provided to prevent
condensation of moisture in the unit. If space heaters are supplied with the unit, they must be turned on.
Otherwise, to prevent condensation, each unit should be equipped with 150-200 watts of heat for the
duration of the storage period.
3.4 Floor Preparation
Theequipmentfoundationmustbedesignedwithsuitablestrengthandlevelness.Sufcientheightshouldbe
allowed above the unit to allow conduit to enter at the top of the unit. The purchaser is responsible for anchoring
theunittotheoorwithanchorsofsuitablestrength.
3.5 Grounding… CAUTION!
To reduce the possibility of electric shock, the unit must be properly grounded before making any system power
connections. Connect the system ground to the ground bus. The ground bus is located in the lower portion of the
free-standing units. For the wall-mount units, ground bus is located on the back panel. Make sure that all ground
conductorsaresizedpertheNationalElectricalCode(NFPA70).

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
PGR Document #HG111-06© 2006 Post Glover Resistors, Inc.
PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
© 2006 Post Glover Resistors, Inc. 8
3.6 Line and Control Connections
RefertoapplicationspecicdrawingsthataccompanythePostGloversystem.Generally,thelineconnections
are made from either the top or bottom of the enclosure. Space is provided for line cables to run down the side
without any cable bends. The control power and auxiliary device connections are made to the terminal blocks
rated 30 amperes, 600 volts.
Refertothespecicdiagramsfurnishedwiththeequipmentforlocationdetail.
Asanalcheck,inspectallwiringtoverifythatconnectionsaremadeproperlyandthattheyarecleanandtight.
Make sure there is adequate clearance between the external connections and all devices.
3.7 Setting Resistor Tap Connections
Adjust the resistor at installation so that ground current with one ground fault is equal to or greater than the
system capacitive-charging current. As long as this minimum criteria is met, the exact magnitude of the setting is
not critical. In fact, a value slightly higher than the system capacitive-charging current may be selected to allow for
futuresystemgrowth.Amethodformeasuringthecapacitive-chargingcurrent(Ic)isdescribedinSection5ofthis
instruction manual. Refer to the elementary schematics for grounding resistor connections.
3.8 General
When the installation is complete and all incoming wiring has been terminated, clean the inside of the unit with
a soft cloth or vacuum cleaner. Make sure any dirt or debris, such as packing material, is removed so it does not
interfere with the operation of the unit. Before connecting power to the control panel, check all components to
make sure all shipping devices, such as blocking or tying of relays, have been removed.

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
PGR Document #HG111-06© 2006 Post Glover Resistors, Inc.
PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
© 2006 Post Glover Resistors, Inc. 9
Section 4 – Start-up Procedure
Place the system in service by following these steps:
4.1 Energize Circuit
Closethedisconnectswitch(SW1).Formedium-voltageequipment,closethehookstick-operatedline-fuse
disconnect also. This will connect the equipment to the power system.
4.2 Entering Setup Information
Enter the setup information through the operator’s panel per the instructions given below. The system NORMAL
green light should be illuminated on the operator panel, indicating the presence of power and that no fault or
under-condition is present.
4.3 Ground Fault Alarm Test
With Test Resistor
This test actually places a controlled ground fault on the system within the enclosure through a test resistor.
The test resistor is connected between a phase conductor and ground, so the test circuit begins at a phase,
goesthroughthetestresistortoground,fromgroundthroughtheneutralgroundingresistor,andnallytothe
PulserPlus Pro™ module.
The readings on the PulserPlus Pro™ module will be lower than normal readings due to the test resistor
connected in series with the neutral grounding resistor. The purpose of the test resistor is to avoid a phase-
ground-phase fault if an actual ground fault were to occur during testing. The resistor would be connected
between the two phases.
Enter a test value in the Fundamental Voltage Hi Limit Setpoint. This test voltage needs to be calculated
depending on the actual resistor values. Although 100 volts is typically used for a test value, the schematic
drawings provided with the PulserPlus Pro™ unit should be consulted.
The equation below can be used to determine a non-typical test value.
Vtest =(VL-N/(RGF + RT-G)) RGF – 10V
Where: Vtest is the test voltage to be entered in the Fundamental Voltage Hi Limit
VL-N is the line-to-neutral system voltage
RGF is the resistance of the neutral grounding resistor at the chosen tap
RT-G is the test-to-ground resistance – see schematic drawing
Press and hold the SYSTEM TEST pushbutton on the operator’s panel to activate the ground-fault circuitry.
After a delay, the green NORMAL light should turn off, and the red GROUND FAULT light should start to blink. In
addition, the audible alarm will sound.

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
PGR Document #HG111-06© 2006 Post Glover Resistors, Inc.
PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
© 2006 Post Glover Resistors, Inc. 10
Release the SYSTEM TEST pushbutton. Press and hold the ALARM SILENCE pushbutton and the audible alarm
should cease. Press the RESET pushbutton and the red and green lights and auxiliary contacts should revert to
their normal states.
Without Test Resistor
This test will verify operation of the PulserPlus Pro™ module only. The test bypasses the neutral grounding
resistorandmostofthecircuitrybyopeningtheneutralgroundingcircuitandapplyingcontrolvoltage(~120Vac)
to the PulserPlus Pro™ controller module.
Enter a value lower than 100 volts in the Fundamental Voltage Hi Limit Setpoint.
The same procedure that is used with a test resistor can now be followed.

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
PGR Document #HG111-06© 2006 Post Glover Resistors, Inc.
PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
© 2006 Post Glover Resistors, Inc. 11
Section 5 – Testing System Capacitive-charging Current
5.1 General
The magnitude of zero-sequence charging current is determined by the line-to-ground capacitance associated
with system components. The value of the current must be known to properly coordinate the Post Glover High-
Resistance Grounding System. In an industrial power system where the design and components are known,
the charging current can be estimated with reasonable accuracy. With a complex array of machines and cables
this may be tedious and yield less-than-accurate results. The discussion that follows outlines a suitable test for
determining the value of current in a system. A transformer’s capacitance-to-ground is usually negligible because
of the large spacing between the transformer’s core and winding, and the shielding effect of the winding layer
adjacenttothecore.Shieldingpreventstheotherwindinglayersfromsignicantlyincreasingthewinding-to-
groundcapacitance.Cableandoverheadlinecapacitance,ontheotherhand,canbesignicantifthecircuitis
large.
Major contributions to the overall system capacitance-to-ground are made by rotating machines. Attributes such
as the type of insulation and the number and depth of slots can produce wide variations. A typical value for a 200-
hp, 2300-volt, 1800-rpm induction motor might be 0.002 micro-farads phase-to-ground capacitance.
The most accurate way to determine the maximum value of the charging current is by test, since extreme
variations can exist. The charging current per phase is represented by ICA, ICB or ICC while ICcorresponds to
the total line-to-ground charging current. To obtain the zero-sequence charging current, one phase conductor is
intentionally grounded as shown in Figure 1 below.
5.2 Test Procedure
Thetestprocedureisasfollows(refertoFigure1onpage12):
1. Temporarily install a disconnect switch, a current limiting fuse and a portable ammeter in the path
between the phase to be tested and earth ground, as shown in Figure 1 below. DO NOT CLOSE
TEMPORARY DISCONNECT UNTIL SW1 IS CLOSED.
 2. ClosethedisconnectswitchinthePulserPlusPro™cabinet(SW1)toprovideareturnpathtomeasure
current returning through the neutral grounding resistor.
 3. Closethetemporarydisconnectswitchinstalledonthephasetobegrounded(asshowninFigure1)in
the system.
 4. Withbothdisconnectswitchesclosed,currentthroughthegroundedphase(IG) can be read by the
  portableammeterandcurrentthroughtheneutralgroundingresistor(IR) can be read by the PulserPlus
Pro™ Display unit.
5. After the test is completed and all data is collected, open the temporary disconnect switch associated with
  thegroundedphasebeforeopeningthedisconnectswitch(SW1)inthePulserPlusPro™cabinet.
 6. Usethechargingcurrentcalculationsbelowtondthetotalline-to-groundchargingcurrent(IC).

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
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PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
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© 2006 Post Glover Resistors, Inc. 12

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
Phone: [phone] • Fax: [phone]
www.postglover.com
Serving the Electrical Industry Since 1892
PGR Document #HG111-06© 2006 Post Glover Resistors, Inc.
PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
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© 2006 Post Glover Resistors, Inc. 13
Charging Current Calculation
From Figure 1:
 Ig=(IR)²+(IC) ²
 Ic=(IG)²-(IR) ²
5.3 Test Results
All components that are operating during testing contribute to the test results. This includes the contribution of
thesurge-protectivecapacitorwhich,asmentionedpreviously,canbequitesignicant.Assuch,thetestresults
shouldbemodiedtoincludeallsurge-protectivecapacitorsnotinoperationduringtesting.
The resulting value should be used to determine a minimum current for ground fault alarming. Set the resistor
taps(seesection2)sothatthefaultcurrentisslightlygreaterthanIC.
NOTE: The temporary disconnect switch and current limiting fuse associated with the phase to be grounded are not
included with the PulserPlus Pro™. A portable ammeter can be included as an option with the PulserPlus Pro™.

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
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© 2006 Post Glover Resistors, Inc. 14
Section 6 – Controller Setup
6.1 Power Up Display
1. Apply AC power to the unit. After a 1/2 second beep, the following message will be displayed for 5 seconds:
2. The unit then goes through a short self check. During the self check, the following message will be displayed:
3. Once the self check is complete, the display unit will display the fundamental and/or 3rd harmonic voltage
and/or the amperage of the grounded system by automatically toggling between the screens. The unit may be
programmed to display any or all of these measurements.
6.2 Adjustable Parameters
The following features of the PulserPlus Pro™ can be set from the front panel.
Fundamental Voltage Measurement On/Off
Harmonic Voltage Measurement On/Off
Fundamental Amperage Measurement On/Off
Harmonic Amperage Measurement On/Off
CT Ratio On/Off
Fundamental Voltage Hi Limit nnn V
Fundamental Voltage Lo Limit nnn V
Harmonic Voltage Hi Limit nnn V
Harmonic Voltage Lo Limit nnn V
Fundamental Amp Hi Limit nn.n A
Fundamental Amp Lo Limit nn.n A
Harmonic Amp Hi Limit nn.n A
Harmonic Amp Lo Limit nn.n A
Pulse Time Sec n.n S
Fundamental Alarm Delay nn.n S
Harmonic Alarm Delay nn.n S
Auto Reset On/Off
Post Glover
PulserPlus Pro
Self-Test
SW Version (x.x)

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PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
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© 2006 Post Glover Resistors, Inc. 15
6.3 Conguration Mode
To Enter Conguration Mode
Press BOTH the RESET and DOWN ARROW buttons until the unit BEEPS, then release.
Adjusting Values in Conguration Mode
Numeric values can be adjusted by using the UP ARROW and DOWN ARROW buttons. The buttons have two
speeds. If either button is held in, the display will increment / decrement by single units for 5 counts, then it will
increment / decrement by ten units. Releasing the button will restore the single units counting.
Pressing the ENTER button will store the NEW value and go to the next setting.
Pressing the MODE button will go to the next setting WITHOUT changing the stored setting.
Pressing the PULSE button will go back to the previous screen WITHOUT changing the stored setting.
To Exit Conguration Mode
PressingtheRESETbuttonwillEXITcongurationmode.
After60secondsofinactivity,theunitwillexitcongurationmodeandreturntodisplayingfundamentaland/or
harmonic measurements.
6.4 Measurement Enable
Using the UP ARROW and DOWN ARROW buttons, the Fundamental Voltage and Amperage, and the 3rd
Harmonic Voltage and Amperage measurement displays can be enabled or disabled. Measurement displays
default to the ENABLED condition.
6.5 Current Transformer Ratio
Fnd Vlt Meas On
(Off/On)
Hrm Vlt Meas On
(Off/On)
Fnd Amp Meas On
(Off/On)
Hrm Amp Meas On
(Off/On)
CT Ratio XXX
Selection XX

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PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
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© 2006 Post Glover Resistors, Inc. 16
Set CT Ratio OFF ON ON ON
Selection: 1X 0.57x 2x 6x
Press the UP ARROW or DOWN ARROW buttons to select the desired ratio, then press ENTER to store the parameter.
This feature multiplies the measured current by the selected CT ratio. For example, the physical limitation of
the PulserPlus Pro™ module is 16A. If 20A is desired, a 30:5 CT is used to send a 0-5A signal the module. The
CTratioissetfor6x,sothemeasuredcurrent(0to5A)ismultipliedby6x.Thedisplayandalarmingusesthis
multipliedcurrent(0to30A).
Default setting for the CT ratio is Off, 1X. The CT ratio is factory set to the proper rating for the installed
components.
6.6 Hi Limit Setpoints
The Hi Limits are only accessible if the associated measurement display is enabled.
The Hi Limit setpoint indicates the level at which the Ground Fault or Third Harmonic alarm will activate.
Using the UP ARROW and DOWN ARROW buttons, the voltage hi limits may be set to any voltage between 0
and 400 volts. For Medium Voltage applications, see the schematic prints provided with the unit for information on
setting this value. The amperage hi limits may be adjusted between 00.0 and 16.0 amps.
6.7 Lo Limit Setpoints
The Lo Limits are only accessible if the associated measurement display is enabled.
Setpoint 010 V
Fnd Vlt Hi Limit
Setpoint 065 V
Hrm Vlt Hi Limit
Setpoint 06.0 A
Fnd Amp Hi Limit
Setpoint 12.0 A
Hrm Amp Hi Limit
Setpoint 000 V
Fnd Vlt Lo Limit
Setpoint 000 V
Hrm Vlt Lo Limit
Setpoint 00.0 A
Fnd Amp Lo Limit
Setpoint 00.0 A
Hrm Amp Lo Limit

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
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PGR Document #HG111-06© 2006 Post Glover Resistors, Inc.
PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4750 Olympic Blvd. • Erlanger, KY 41018 • USA
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© 2006 Post Glover Resistors, Inc. 17
The Lo Limit setpoint indicates the level at which the Loss of Ground condition will activate. For a Harmonic Lo
Limit, it may also indicate a Ground Fault.
Using the UP ARROW and DOWN ARROW buttons, the voltage lo limits may be set to any voltage between 0
and 400 volts. For Medium Voltage applications, see the schematic prints provided with the unit for information on
setting this value. The amperage lo limits may be adjusted between 00.0 and 16.0 amps. A setting of 0A disables
the amperage lo limit feature.
6.8 Pulsing Timer
The Pulse Rate used to locate ground faults can be adjusted from 0.5 to 3.0 seconds in increments of 0.1
seconds. The setpoint indicates time on and time off, so a setting of 1.0 S results in the pulse on for 1 second and
offfor1second(pulserateof30perminute).
 Calculation:60/[2*setpoint(seconds)]=pulserateperminute
Sample Settings 0.5 s 1.0 s 2.0 s 3.0 s
Resulting Pulse Rate 60 / min 30 / min 15 / min 10 / min
6.9 Alarm Delay
The Alarm Delay setpoints indicate the amount of time between a fault indication and the alarm activation in
seconds. During the alarm delay time, the system will monitor the fundamental and/or harmonic voltage and/or
amperage measurement. If the faulted parameter returns to a value within the set limits prior to the expiration of
the delay, the alarm will be canceled. Thus, a transient high measurement will not activate the alarm. The default
setting for this setpoint is 4.5 seconds.
Using the UP ARROW and DOWN ARROW buttons, the alarm delay may be set for any time between 0 and 20.4
seconds.
6.10 Auto Reset
WhenturnedOn(enabled),auto-resetwillresettheunitwhenafaultiscleared.
WhenturnedOff(disabled),ausermustpresstheALARMSILENCEandRESETbuttonstoplacethesystemin
NORMAL state after clearing a fault.
Setpoint 0.6 S
Pulse Time Set
Setpoint 04.5 S
Fnd Alarm Delay
Setpoint 04.5 S
Hrm Alarm Delay
Auto Reset On
(Off/On)

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
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PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
© 2006 Post Glover Resistors, Inc. 18
Section 7 – Locate a Ground Fault
To locate a ground fault, activate the pulsing circuit by pressing and holding the PULSE pushbutton on the
operator’s panel. Once the words “Pulser On” are indicated on the alphanumeric display, the button may be
released. This activates a control circuit which causes a cyclic switching sequence. The switching sequence
consistsofthecycletimingofanintegralpulsingrelay(P).Thepulsingrelay(P)outputcontactonthecontroller
alternatelyenergizesandde-energizesapulsingcontactor(PX)mountedonthePulserPlusPro™controlpanel
backplate.Thepulsingcontactor(PX)shortsoutaportionofthegroundingresistor(NGR)eachtimethecontactor
is energized, producing a tracer signal.
The optional portable hook-on detector is then used to follow the tracer signal through the system to the point of
thefault.Thedetectorisclampedaroundallthreephasesofeachindividualfeeder(seeFigure2below).The
feederwiththefaultwillshowrhythmicuctuationsonthedetector’sreadout.Thefaultcanbetracedtothe
sub-feeder and eventually to the faulted device. Once this location is determined, the pulser should be turned
off by pressing and holding the PULSE pushbutton on the operator’s panel. Once the words “Pulser Off” are
indicated on the alphanumeric display, the button may be released.
After clearing the fault, place the system in its normal operation mode by pressing the RESET pushbutton.
Figure 2
How to Locate a Ground Fault

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
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PGR Document #HG111-06© 2006 Post Glover Resistors, Inc.
PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
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© 2006 Post Glover Resistors, Inc. 19
Section 8 – Maintenance
Normally, no maintenance is necessary for the PulserPlus Pro™ high resistance grounding system. However,
periodic inspections are needed to ensure that the controller is functioning correctly and the resistor is still capable
of protecting the system. Post Glover Resistors recommends that the periodic inspections coincide with your
normal system Preventative Maintenance schedule.
Thefollowingprocedureisrecommendedforperiodiceldinspections:
1. De-energize the system being grounded and break the connection between the system, the neutral, and
the grounding resistor using the disconnect switch. Always use proper lock-out/tag-out procedures when
working on electrical equipment.
2. Open the front door on the control enclosure. For systems with a separately mounted resistor, remove
the front and rear covers. This will allow for a visual inspection of all internal components.
3. Carefully check for cracked insulators and resistor cores. A MEGGAR or Hi-Pot test is the most reliable
method of ensuring that the insulation is still providing the necessary electrical isolation.
4. Check the resistive element for continuity. Ohmmeter readings made between each neutral tap and
the ground side of the resistor should be within 10% of the values on the resistor drawing. If the
resistances of the elements are more than 15% different from the drawing values, the resistors should be
replaced. Any open resistors should be replaced.
5. Check all internal connections for tightness. Check wiring for signs of damage from heat or overloads.
6. Check the enclosure for signs of damage from weather or rodents. Remove any dirt or debris from the
inside of the enclosure using a vacuum cleaner. Replace all side covers removed during inspection and
check the mounting bolts for tightness. Close the front door of the control enclosure.
7. After re-energizing the system, perform the Test procedure in section 4.3 to verify system operation.
8. FOR REPLACEMENT PARTS OR ASSISTANCE, CALL 1-800-537-6144. Please have the resistor
nameplate information readily available when you call.

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
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PGR Document #HG111-06© 2006 Post Glover Resistors, Inc.
PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
© 2006 Post Glover Resistors, Inc. 20
Section 9 – Schematics
Figure 3
600 Volt Maximum, Wye Connected System
Figure 4
600 Volt Maximum, Delta Connected System