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Pow-R-Line X Retrofit Panelboards
Pow-R-Line X RetRofit PaneLboaRds
MN014011EN January 2020 eatoncanada.ca
Maintenance
It is essential to maintain the equipment in satisfactory
condition.
To ensure continued quality service, a systematic
maintenance schedule is vital. Facility operation and local
conditions vary to such an extent that the schedule must
be prepared to suit the conditions. The maintenance
schedule for individual devices, such as circuit breakers,
meters, fusible switches, etc., should be based upon
recommendations contained in the individual instruction
leaflet for each device. Inspection and test operations
should be coordinated with an overall testing program
to result in the least operating inconvenience and
system shutdowns.
Prior to performing any maintenance on the
panelboard, first de-energize the panelboard at the
source. Use lockout/ tag-out precautions as prescribed
in OSHA, NFPA 70E and other safety manuals.The
panelboard should be given a thorough maintenance
check annually.
Exercise extreme care to prevent the equipment from
being connected to the power source while tests are
being conducted.
WARNING
HAZARDOUS VOLTAGE. WILL CAUSE SEVERE INJURY OR
DEATH.
WARNING
ONLY THOSE PROFESSIONALS TRAINED AND
QUALIFIED ON ELECTRICAL DISTRIBUTION PANELBOARDS
SHOULD INSTALL AND/OR SERVICE THIS EQUIPMENT.
DANGER
HAZARDOUS VOLTAGE WILL CAUSE SEVERE INJURY OR
DEATH. DE-ENERGIZE PANELBOARD PRIOR TO SERVICING.
WARNING
ONLY THOSE PROFESSIONALS TRAINED AND QUALIFIED
ON ELECTRICAL DISTRIBUTION PANELBOARDS SHOULD
INSTALL AND/OR SERVICE THIS EQUIPMENT.
Panelboard Insulation Resistance Testing
Maintenance before Cleaning
Prior to cleaning, perform an initial Megger or DC test of
the panelboard insulation, between phases and ground.
Inspect for symptoms that may indicate overheating
or weakened insulation. Record test readings. Refer to
NEMA publication AB-4 “Guidelines for Inspection and
Preventative Maintenance of Molded Case Circuit Breakers
Used in Commercial and Industrial Application.” Prior to
testing, remove all control power fusing and connections to
products, which will be damaged in this test. This includes
all components with control wire fusing, Transient Voltage
Surge Suppression, Surge Protective Devices, metering
equipment, etc.
Cleaning
While the panelboard is de-energized, remove dust and
debris from bus bars, connections, supports and enclosure
surfaces. A vacuum cleaner with a nozzle will be of
assistance. Wipe clean with a lint-free cloth. Do not use
solvents to clean equipment as damage to surfaces can
occur. Should the panelboard be exposed to adverse
conditions, such as, airborne contaminants, more frequent
inspections and cleaning may be required.
Use of compressed air to clean or blow out debris
in panelboards may imbed the contaminants within
overcurrent devices, metering equipment and other
components. Damage to insulation and other surface
materials can occur. Do Not Use Compressed Air in
cleaning.
Maintenance after Cleaning
After cleaning, perform a second Megger or DC test of the
panelboard insulation between phases and ground. Prior to
testing, remove all control power fusing and connections to
products, which will be damaged in this test. This includes
all components with control wire fusing, Transient Voltage
Surge Suppression, Surge Protective Devices, metering
equipment, etc.
DO NOT USE AC dielectric testing
Test resulting in readings at or above 1 megaohm is
satisfactory.
Compare these test readings with prior readings and
retain with previous testing for future comparisons. Trends
of lowered insulation resistance are signs of potential
problems.
Bus and Cable Connections
1. Inspect bus bar and cables for visible damage.
2. Visually inspect connections for overheating and
damage.
3. All bus bars and cable connections should be
checked and torque in accordance with labeling on
the panelboard. Refer to Appendix Table 4 for torque
values.
4. Inspect for broken wire strands and pinched or
damaged insulation on cable connections.
Insulation
All bus bar and structure insulation in the panelboard
including bus supports, bus shields, bus bracing, insulating
barriers, etc., should be visually checked for damage.
Replace damaged parts. The life of insulation material is
dependent on keeping the material dry and clean.
Summary of Contents for P1RX 240Vac Max
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