Viewing Ports

j.

Dielectric Voltage-Withstand (Repeated)

k.

Withstand

l.

Instrumentation and Calibration of High Capacity

m.

Closing

n.

Dielectric Voltage-Withstand (Repeated)

o.

Strength of Insulating Base and Support

2.5.1

Viewing Ports

ATS and BP/IS switches shall be of draw-out construction. Viewing ports to

inspect the contacts without requiring disassembly shall be provided.

2.5.2

Operating Handles

The operating handles shall be externally operated, and designed and

constructed not to stop in an intermediate or neutral position during

operation, but shall permit load by-pass and transfer switch isolation in

no more than two manual operations which can be performed by one person in

5 seconds or less. The transfer speed will be independent of the

operational speed of the switch handle or handles.

PART 3

EXECUTION

3.1

INSTALLATION

ATS shall be installed as shown and in accordance with approved

manufacturer's instructions.

3.2

INSTRUCTIONS

Manufacturer's approved operating instructions shall be permanently secured

to cabinet where operator can see them. One-line and elementary or

schematic diagram shall be permanently secured to inside of front enclosure

door.

3.3

SITE TESTING

**************************************************************************

NOTE: Design should incorporate ATS testing in

overall test of complete emergency system under

load, including ATS and generators. Delete BP/IS

reference if not required.

**************************************************************************

Following completion of ATS installation and after making proper

adjustments and settings, site tests shall be performed in accordance with

manufacturer's written instructions to demonstrate that each ATS functions

satisfactorily and as specified. Contractor shall advise Contracting

Officer not less than 5 working days prior to scheduled date for site

testing, and shall provide certified field test reports within 2 calendar

weeks following successful completion of site tests. Test reports shall

describe adjustments and settings made and site tests performed. Minimum

operational tests shall include the following:

a.

Insulation resistance shall be tested, both phase-to-phase and

phase-to-ground.

b.

Power failure of normal source shall be simulated by opening

upstream protective device. This test shall be performed a

SECTION 16410A

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