Post Glover PULSERPLUS PRO - Locating a Ground Fault; Ground Fault Location Procedure

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PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS

4750 Olympic Blvd. • Erlanger, KY 41018 • USA

Phone: 800-537-6144 / 859-283-0778 • Fax: 859-283-2978

www.postglover.com

Serving the Electrical Industry Since 1892

PULSERPLUS PRO™ HIGH RESISTANCE GROUNDING SYSTEM

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS

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