XXXXXX.X 115kV and 12kV Switch Motor Operator - DRAFT
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1.0 Scope
This Specification covers the requirements for furnishing and delivering a pole mounted motor operator for use on 12kV and 115kV line switches.
2.0 Material ID Number
This Specification applies to the following District Material ID number:
| TBD | Motor Operator, Distribution |
| TBD | Motor Operator, Transmission |
3.0 Reference Standards
Except as modified by this Specification, the motor operator supplied under this Specification shall conform to the characteristics, definitions, terminology and requirements of the latest editions, amendments and specifications of the standards listed below:
| ANSI C37.30 | IEEE Standard Requirements for AC High-Voltage Air Switches Rated Above 1000 V |
4.0 Electrical
4.1 Power Supply
The motor operator shall have a primary power source of 120V AC with a 12V-48V battery backup. A provision for an AC shore power connection shall be supplied for the event of a battery failure and unavailability of 120V AC power. The switch shall include a battery of sufficient size to be able to operate the switch for 5 days or 10 operations whichever comes first.
The motor operator shall be equipped such that it will not attempt to operate if the battery level is too low to perform the complete operation.
4.2 Circuit Breakers
Circuit breakers of sufficient voltage, current, and design shall be provided for all systems relating to the motor operator.
An auxiliary GFCI protected outlet shall be provided within the enclosure.
4.3 Temperature Control System
A temperature control system shall be included to heat the enclosure and shall be electronically controlled and remotely monitored by SCADA.
The temperature control system shall be positioned in a way to provide adequate heating to the backup battery to extend life.
4.4 Terminal Blocks
Screw type terminal blocks with space for labeling shall be provided.
5.0 Mechanical
The motor operator shall have a torsional operating direction and shall rotate the switch shaft in one continuous motion. Programmable stops and a mechanical decoupler shall be included.
| 115kV (Transmission) | 12kV (Distribution) | |
|---|---|---|
| Type of Switch Operation | Torsion | Torsion |
| Size of Vertical Pipe | 2 | 2 |
| Maximum Time for 180° Rotation of Vertical Rod (Seconds) | 4 | |
| Minimum Torque | 1000 ft lbs | 500 ft lb |
| Minimum Operating speed (0-90 degrees) | 0.4 |
5.1 Manual Switch Operation
A manually operated swing handle shall be provided to safely operate the switch while the motor operator is decoupled.
The handle shall be stored within the enclosure and remote operation shall be disabled when the handle is removed from it's storage location.
5.2 Switch/Motor Decoupling
The motor operator shall have a means of mechanically decoupling the drive motor from the drive shaft. A locking mechanism utilizing a single padlock shall be provided to be used to decouple the switch to the motor operator as well as locking the switch open or closed while the motor operator is decoupled.
5.3 Gearbox/Drive Train
The gearbox shall be completely maintenance-free for the life of the motor operator.
The motor shall have a NEMA standard face mount (Keyed Connection) for ease of field replacement.
5.4 Enclosure
The motor operator and associated elecronic equipment shall be inside a NEMA 4X enclosure.
The enclosure shall be constructed of stainless steel.
The enclosure dimensions shall not exceed 24" H x 24" W x 16" D.
Mounting brackets shall be provided to allow for installation on round wood or metal poles.
6.0 Control Functions and Operation
The following remote functionality shall be included:
- Battery charge level monitoring
- Battery and system health monitoring
- Temperature monitoring
- Temperature Control System control
- Switch operation control
- Switch position monitoring
- Door open/closed monitoring
- Incorrect switch operation monitoring
7.0 Software
An updated copy of the application software shall be provided with each controller.
8.0 Instruction Manual
An instruction manual covering installation, operation, and maintenance shall be provided with each controller.
9.0 Interoperability
9.1 Equipment of the same model, ratings, and manufacturer shall be electrically and mechanically interchangeable with one another. Like parts and components, in the motor operators themselves, shall be fully interchangeable, so that when interchanged they shall function equally well in every respect.
10.0 Evaluation of Bids
The following factors will be considered in the analysis and evaluation of bids and subsequent bid award:
10.1 Proposed delivery
10.2 Past performance of Bidder and product
10.3 Conditions of warranty
10.4 Completeness of Bidder's data
10.5 Initial cost
10.6 Construction details and interchangeability
10.7 Instruction manual
10.8 List of all exceptions to this Specification with adequate explanation for each, or a statement that there are no exceptions
12.0 Shipment
12.1 Shipment address:
PUD No. 1 of Snohomish County
Operations Center Receiving
1802 – 75th Street SW
Everett, WA 98203-6264
12.2 Equipment damaged in shipment will be refused on delivery and it will be the Bidder’s responsibility to arrange the prompt repair or replacement to the standards of new equipment. The Bidder will not be relieved of the responsibility of delivering undamaged equipment, even if the damage is internal, or otherwise goes undetected and the nature of the damage remains unknown until the equipment is energized and tested.
12.3 Equipment shall be suitably packed to ensure against damage from weather or transportation in accordance with the requirements of common carriers.
13.0 Inspection
After delivery, inspection shall be in accordance with Section 2 of the District's Purchase Order Terms and Conditions, latest revision. If returning rejected equipment to the supplier, the shipping costs will be at the supplier's expense.
14.0 Correction of Deficiencies and Nonconformities
Any opportunity for the Supplier to correct deficiencies and nonconformities will be at the sole discretion of the District and at the sole expense of the Supplier. If the District elects to allow corrections, mutual arrangements shall be made for their completion. Any subsequent testing required due to deficiencies and nonconformities will be at the Supplier's expense. All shipping costs associated with correction of deficiencies and nonconformities will be at the Supplier's expense.
15.0 General Bidding Conditions
The attached General Bidding Conditions are made a part of this Specification.