PS Magazine - TB 43-PS-726

PS, The Preventative Maintenance Monthly

ISSUE 726

MAY 2013
PS Magazine - TB 43-PS-726 - Page 28 of 33
53
PS 726
MAY 13
Connect the load bank’s L1,
L2, L3 and LO cables to the
generator set’s junction box. Then
make sure the generator set is
properly connected to the power
distribution unit (PDU), like it says
in WP 0005-5 through -6 of TM
9-6115-668-13 (Dec 11),
Operator
and Field Maintenance Manual
for Generator Set, Diesel Engine
Driven, Skid Mounted 150kW,
400 Hz, Alternating Current.
Finally, connect the generator
set’s power and control cables
to the junction box. That way
the power cables don’t have any
exposed leads that can harm you.
And the connection between the
load bank and the generator set is
convenient and safe.
Play It Safe
Before you start connecting power cables or anything else, make sure your generator
set is properly grounded. WP 0005 of TM 9-6115-669-13&P covers grounding instructions.
And remember, never set up, adjust or fix a ground when the generator set is running.
If you do, you risk getting a deadly shock.
So play it safe. Make sure the set is shut down and all power is off before you touch
ground straps, rods, terminals, clamps or lugs. Ideally, you should check grounds during
other PMCS when the set is off.
Electric Power Plant III…
Connection Correction
Here’s the
safe way
to
make the
connection…
…WP 0005-33 through -35 of
TM 9-6115-669-13&P (Feb 12),
Operator and Field Maintenance
Manual including Repair Parts
and Special Tools List for
Electric Power Plant III.
Complete
procedures for
operating the
load bank are
spelled out in…
Properly connect
generator set to power
distribution unit
That’s a
dangerous
practice.
some units have been
connecting their electric
power plant (EPP) III’s
150-kW generator set
directly
to the load bank.
A
direct connection between the generator set and the load bank exposes you to live
leads producing more than 208VAC at 520 amperes per phase. That’s enough to kill
you and then some.
Connect load bank to junction box
Never
connect generator set
directly
to load bank
726 52-53.indd
1-2
4/3/13
12:11 PM
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