KO MV BRK VENDOR BID EVAL.pdf

Vendor Bid Evaluation

Check List

Vednor's bid includes Vendor A

1 As found checks of Arc chutes conditions.

2 As found checks of the contact wipe.

3 As found checks of contact gap.

4 As found checks of phase insulators.

As found checks of of mechanical integrity of all moving parts.

6 As found checks of inter phase barriers.

As found checks of frame and all castings for cracks.

As found checks of operation of racking mechanism.

9 As found checks of finger clusters.

As found checks of auxiliary switches, wiring, and contacts (change of state).

As found checks of all position indicators and operations counter.

As found checks of minimum and maximum coil operating voltages.

As found checks of manual and electric open and close operations.

As found checks of for proper operation of anti‐ pump feature.

As found checks of for proper operation of electrical and mechanical safety interlocks.

As found checks of for proper operation of racking device and As found checks of interlocks.

17 As found checks of geared motor.

18 As found checks of under‐voltage release.

19 As found checks of opening and closing release.

Performs insulation resistance testing at 15kVDC of primary current carrying components phase to phase with the main contacts open.

Performs insulation resistance testing at 15kVDC of primary current carrying components phase to ground with the main contacts open.

Insulation resistance as found checks of secondary (control) circuits, to ground.

23 Testing of the spring charging motor

Circuit breaker opening and closing will be performed at normal operating control voltage.

25 Main contact resistance is to be preformed.

Proper operation of the circuit breaker trip features are going to be checked.

1 of 3 Table 1

Breaker will be disassembled to the individual component level

Each component of the breaker will be cleaned and inspected.

Components that do not meet OEM specifications will be replaced

30 All Bearings will be replaced

31 All Trip and closing coil are to be replaced

32 Closing latch pivot pins is to be replaced

33 Limit switch contacts will be banished

34 Terminal connection will be checked

35 Pivot Pins are to be lubricated

Needle bearings are to be lubricated per standard

OEM

Roller bearings are to be lubricated per standard

OEM

Sleeve bearings are to be lubricated per standard

OEM

Thrust Washers are to be lubricated per standard

OEM

40 Cams are to be lubricated per standard OEM

41 Gears are to be lubricated per standard OEM

All latches, roller clearances, adjustable spring tensions and mechanical adjustments within the operating mechanism will be setup per the applicable manufacturer’s specification and/or instruction bulletin

Main and arcing contact adjusted per manufacturer’s specifications

44 All wiring is being replaced per USBR standard

All internal wiring is terminated with ring terminals per manufacturer's instructions

Minimum and maximum pick‐up coil operating voltages are being checked

Five (5) manual and five (5) electrical functional operational tests will be performed.

48 Operation of anti‐pump feature will be tested

Operation of electrical and mechanical safety interlocks will be checked.

Indicating devices will be checked for proper operation

D2. Perform circuit breaker opening and closing timing tests at normal operating control voltage.

D3. Perform main contact resistance checks

(Ductor). Maximum acceptable readings will be per manufacturer specifications.

2 of 3 Table 1

A report of the "As‐found" operation and condition by traceable by serial number is to be provided

Listing of all components replaced will be provided

Report on the all testing conducted will be provided

3 of 3 Table 1