260530_Electrical_Acceptance_Testing.pdf

CHICOPEE ARMORY REHABILITATION MMD PROJECT NO. 985010

CHICOPEE, MASSACHUSETTS ISSUED FOR BID – 05/20/11

10090 ELECTRICAL ACCEPTANCE TESTING 260530-1

SECTION 260530

ELECTRICAL ACCEPTANCE TESTING

PART 1 - GENERAL

1.1 GENERAL

A. Provisions of Section 260500, General Requirements for Electrical Work apply to the work of this Section.

B. This Specification Section covers the field inspection, mechanical completeness, and electrical acceptance tests required for electrical apparatus, wire, cable and other miscellaneous equipment and material installed and wired by Contractor.

C. The Electrical Contractor shall prepare written procedures for the performance of all testing. The procedures shall include an itemization of all equipment, devices, cable and material requiring field testing, setting, adjustment or calibration and shall describe the required set points.

D. The Electrical Contractor shall maintain records for all tests and inspections, with complete data on all readings taken. Test results shall be recorded on standard test forms and submitted to the owner upon completion. All reports shall be dated and shall include the name of the person performing the test.

PART 2 - PRODUCTS

2.1 GENERAL

A. The equipment to be tested under this Section is generally provided under other

Specification Sections.

PART 3 - EXECUTION

3.1 GENERAL

A. Upon completion of the installation, the Electrical Contractor shall perform field tests on all equipment, materials and systems to insure that the entire installation is sound and that all circuits, including power, control, relaying, instrumentation and metering will function properly and as intended.

B. The Electrical Contractor shall furnish and maintain all tools, instruments, materials, test equipment, test connections and personnel, including supervision and labor required for testing, setting and adjusting of all electrical equipment.

C. All tests shall be performed with proper regard for the protection of equipment. The

Electrical Contractor shall be responsible for adequate protection of all personnel during such tests.

10090 ELECTRICAL ACCEPTANCE TESTING 260530-2

D. No equipment shall be installed, operated or tested in such a manner as to void the manufacturer's warranty or guarantee. Should any test values or procedures as indicated in this Specification exceed the values or overrule the procedures recommended by the manufacturer for the equipment involved, the manufacturer's recommendation, shall take precedence.

E. Prior to energizing or placing in service any electrical equipment, testing and checking shall be completed.

F. The witnessing or waiving of witnessing of any test shall not relieve the Electrical

Contractor of its guarantees for material, equipment and workmanship.

G. The Electrical Contractor shall promptly advise the Engineer in writing concerning the failure of any equipment or material to pass the tests performed, or to properly function as intended, or to meet calibration accuracy required. After the defects have been corrected, the test(s) shall be repeated.

3.2 SWITCHBOARDS

A. Switchboards shall be tested in accordance with specification 262413.

3.3 DRY TYPE TRANSFORMERS (AUTO TRANSFORMERS)

A. Check primary and secondary connections for correctness.

B. Perform one minute megger tests of the primary windings to ground with the secondary grounded and secondary windings to ground with the primary grounded.

D. After transformers are energized, check secondary voltage and adjust taps as necessary.

3.4 ROTATING EQUIPMENT

A. The following visual inspection shall be made on all motors:

1. Check that frame is grounded.

2. Check motor leads for proper connection and color coding.

B. The Contractor shall assist equipment vendors with checking all motors for proper rotation by bumping motors or with Motor and Phase Rotation Tester. Coupled motors shall not be bumped unless authorized by the vendor’s technical representative. The Contractor shall correct motor connections as necessary.

3.5 WIRE AND CABLE

A. Control and Instrument Wiring - Control and instrument field wiring shall be visually inspected and tested for continuity to insure that all field wiring is installed in accordance with Contract Drawings and/or equipment manufacturers drawings. Verify all field conductors are properly identified with wire numbers.

10090 ELECTRICAL ACCEPTANCE TESTING 260530-3

B. Low Voltage Power Wiring - All 208V three phase feeders and motor branch circuits shall be subjected to one minute 1000V megger test. Minimum insulation resistance shall be 50 megohms. Megger tests shall be performed between each phase (A-B, B-C, and C-A) and three phases tied together to ground.

3.6 FUNCTIONAL TESTING

A. Unless otherwise noted, the Electrical Contractor shall energize and operate all alarm and control circuits under simulated or actual system conditions to verify the correctness of wiring. All control circuits shall be checked in their entirety.

B. Control wiring, circuits and devices furnished and installed by Division 23 will be tested by

Division 23.

END OF SECTION 260530