Section 263235 - Standby Generator Testing and Commissioning.1
Section 263235 - Standby Generator Testing and Commissioning.1
Section 263235 - Standby Generator Testing and Commissioning.1
PART 1 - GENERAL
1.1
A.
SUMMARY
Section Includes:
1.
Standby generators.
2.
3.
4.
5.
6.
7.
System demonstration.
B.
C.
All equipment, including load banks, measuring instruments, cables, connectors, etc.
required for the site testing of the complete generator installation shall be provided by
the generator manufacturers factory authorized firm. The electrical contractor shall
assist and coordinate with the generator manufacturers factory authorized firm in the
administration and performance of the site testing.
1.2
SUBMITTALS
A.
B.
Field test reports and other documentation including a description of the test
procedures and inspections with results listed for each test performed in a type-written
format. Include results of tests, inspections and retests.
C.
Battery and battery charging test results and inspections required in this specification.
D.
Infrared scanning reports with pictures printed in a final report with any deficiencies and
actions taken to rectify.
1.3
QUALITY ASSURANCE
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A.
Provide a list of testing equipment with make and model numbers. Test Equipment
shall have current calibration validation.
B.
2.
Perform generator testing, ATS testing and integral system testing including both
generators and ATS.
C.
2.
3.
6.
7.
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4.
5.
8.
9.
10.
11.
12.
13.
14.
15.
D.
NFPA 110 Acceptance Tests: Perform tests required by NFPA 110 that are
additional to those specified here including, but not limited to, single-step full-load
pickup test.
Battery Tests: Equalize charging of battery cells according to manufacturer's
written instructions. Record individual cell voltages.
a.
Measure charging voltage and voltages between available battery
terminals for full-charging and float-charging conditions. Check electrolyte
level and specific gravity under both conditions.
b.
Test for contact integrity of all connectors. Perform a battery system
integrity load test and a capacity load test.
c.
Verify acceptance of charge for each element of the battery after
discharge.
d.
Verify that measurements are within manufacturer's specifications.
Battery-Charger Tests: Verify specified rates of charge for both equalizing and
float-charging conditions.
Exhaust-System Back-Pressure Test: Use a manometer with a scale exceeding
40-inch wg. Connect to exhaust line close to engine exhaust manifold. Verify
that back pressure at full-rated load is within manufacturer's written allowable
limits for the engine.
Exhaust Emissions Test: Comply with applicable government test criteria.
Voltage and Frequency Transient Stability Tests: Use recording oscilloscope to
measure voltage and frequency transients for 50 and 100 percent step-load
increases and decreases, and verify that performance is as specified.
Harmonic-Content Tests: Measure harmonic content of output voltage under 25
percent and at 100 percent of rated linear load. Verify that harmonic content is
within specified limits.
Noise Level Tests:
Measure A-weighted level of noise emanating from
generator-set installation, including engine exhaust and cooling-air intake and
discharge, at [four] <Insert number> locations [on the property line] <Insert
location for measurement>, and compare measured levels with required
values.
5.
Inspect bolted electrical connections for high resistance using one of the
following methods:
a.
Use of low-resistance ohmmeter.
b.
Verify tightness of accessible bolted electrical connections by calibrated
torque-wrench method in accordance with manufacturers published data.
c.
Perform thermographic survey.
Perform manual transfer operation.
Verify positive mechanical interlocking between normal and alternate sources.
Perform insulation-resistance tests on all control wiring with respect to ground.
Applied potential shall be 500 volts dc for 300-volt rated cable and 1000 volts dc
for 600-volt rated cable. Test duration shall be one minute. For units with solidstate components or for control devices that cannot tolerate the applied voltage,
follow manufacturers recommendation.
Perform a contact/pole-resistance test.
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2.
3.
4.
6.
7.
8.
9.
10.
E.
4.
5.
6.
7.
F.
Leak Test: After installation, charge system and test for leaks. Repair leaks and retest
until no leaks exist.
G.
Test and adjust controls and safeties. Replace damaged and malfunctioning controls
and equipment.
H.
Retest: Correct deficiencies identified by tests and observations and retest until
specified requirements are met.
I.
Report results of tests and inspections in writing. Record adjustable relay and breaker
settings and measured insulation resistances, time delays, and other values and
observations. Attach a label or tag to each tested component indicating satisfactory
completion of tests.
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B.
3.3
Report results of load bank tests in writing. Attach a label or tag to equipment
indicating satisfactory completion of load bank tests.
INTEGRAL POWER SYSTEM TEST
A.
An integral power system test shall be performed for projects including the installation
of an uninterruptible power system (UPS).
B.
The integral power system test shall be dictated and performed by the UPS system
provider.
C.
The generator provider shall provide assistance as required where compatibility issues
between the UPS systems and the generator arise including:
1.
2.
3.
4.
3.4
A.
Compatibility between the UPS system and the generators, i.e. harmonics shall
not influence voltage regulation and the UPS input filter shall not affect the
generator.
Ability of the UPS system to synchronize the generator output.
Ability of the UPS system to transfer the load from UPS system to maintenance
bypass and back while on generator power.
Ability of the UPS to limit battery recharge current while on generator power.
DEMONSTRATION
Engage a factory-authorized service representative to train Owner's maintenance
personnel to adjust, operate, and maintain packaged engine generators. Refer to
Division 1 Section "Demonstration and Training."
END OF SECTION
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