1002029.1 Pad-mounted SCADA Compatible Recloser

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1. Scope

This Specification covers the requirements for furnishing and delivering a three-phase 60 Hz, outdoor, pad-mounted SCADA compatible microprocessor-based line recloser. The interrupting medium shall be either oil or vacuum.

2. Material ID Number

This Specification applies to District Material ID Number 1002029

3. Reference Standards

The recloser supplied under this Specification shall conform to the characteristics, definitions, terminology, and requirements of the latest editions, amendments, and supplements of:

ANSI/IEEE C37.60 IEEE Standard Requirements for Overhead, Pad-Mounted, Dry Vault and Submersible Automatic Circuit Reclosers and Fault Interrupters for AC Systems
ANSI/IEEE C37.61 IEEE Standard Guide for the Application, Operation and Maintenance of Automatic Circuit Reclosers
ANSI/IEEE C57.12.28 American National Standard Pad-Mounted Equipment--Enclosure Integrity

4. Electrical Ratings

4.1 Nominal Voltage 14.4kV

4.2 Maximum Voltage 15.5kV

4.3 BIL 110kV

4.4 Power Frequency 60Hz

4.5 See Special Provision sheet for Continuous Current Rating and Interrupting Current (Symmetrical amps) at maximum voltage.

5. Construction

5.1 Enclosure

5.1.1 The enclosure shall be of welded steel construction free from leaks and seepage. The surface shall be properly cleaned and painted for protection against severe atmospheric conditions, oxygen, acid salts and alkalis.

5.1.2 All external fittings and cover bolts, washers and nuts shall be stainless steel. Clamping devices shall be of corrosion resistant material.

5.1.3 The enclosure finish shall be ANSI C57.12.28, Green No. 70, Munsell No. 7GY 3.29/1.5.

5.1.4 The enclosure shall be equipped for lifting from above. Lifting lugs shall provide lifting capabilities for either the entire unit or the recloser tank only.

5.2 Connector Bushings

Deadfront-type bushings shall be compatible with separable deadfront elbow connectors rated for 600-amp, 15kV and 27kV service.

5.3 Nameplate

The nameplate shall be attached to the outside of the recloser and shall include all data required in ANSI C37.60. If the interrupting medium is oil, a statement shall be included that the “oil contains less than 1 ppm PCB at time of manufacture”.

5.4 Control Panel Enclosure

The control panel enclosure shall incorporate the following features:

5.4.1 The control panel cabinet shall be mounted inside the padmount enclosure protected from weather damage.

5.4.2 All connectors and control cables shall mount to the bottom side of the control panel enclosure. The connectors shall be weatherproof and shall be a quick disconnect type that do not require tools for makeup or removal; i.e., they shall be screwed cannon plug type or equivalent.

5.4.3 The control panel must be mounted inside an enclosure that is capable of being locked with the District’s padlocks, both long and short shanks.

5.4.4 The control panel enclosure shall include a lug for panel grounding.

5.4.5 The control panel enclosure shall include an 8 Amp-Hour 24 volt DC lead acid battery for operation upon loss of AC power. The battery shall be capable of maintaining full operation for a 15 hour maximum period at 20 °C.

5.4.6 The control panel enclosure shall include a heavy duty terminal block with #6-32 AWG screw terminal positions for terminating the District’s wiring from the RTU. An easily readable, permanent method shall be used to identify all external connection terminal blocks.

6. Recloser Switch

The recloser switch shall be equipped with or feature the following:

6.1 Self-contained bushing type current transformers or equivalent for sensing instantaneous values of load current and fault current

6.2 Lifting lugs and jack lugs for lifting the entire recloser with oil (if used)

6.3 Lugs for tank grounding

6.4 Oil drain valve and oil level sight window (if oil is used)

6.5 A yellow-coated manual operating handle for manual lockout - This handle shall be easily seen and accessed when the recloser enclosure door is open.

6.6 Enclosure height shall not exceed 50 inches and width shall not exceed 52 inches

6.7 An indicator showing the position of the contacts within the recloser - This indicator shall be easily seen when the recloser enclosure door is open. When contacts are in the open position, the indicator will show an “OPEN” indication, and when the contacts are in the closed position, the indicator will show a “CLOSED” indication.

6.8 A ‘Closing Tool Port’ or the equivalent to manually close the recloser when in the shop being tested

7. Non-PCB Decal

7.1 A “NON PCB” decal shall be installed on each mineral oil-filled type recloser. “NON-PCB” decals shall conform to the latest revision of District Material Standard No. 1000212.1.

7.2 The decal shall be positioned so it can be easily seen when the recloser enclosure door is open.

8. Control Panel

The control panel shall include the following:

8.1 A selector switch or the equivalent for each of the following:

8.1.1 The number of fast ground trips

8.1.2 The number of fast phase trips

8.1.3 The number of total trips to lockout

8.2 Selector switches or their equivalent for at least three reclosing intervals:

8.2.1 The first reclose interval shall be the time measured from the first recloser “opening” to the first recloser “reclose”.

8.2.2 The second reclose interval shall be the time measured from the second recloser “opening” to the second recloser “reclose”.

8.2.3 The third reclose interval shall be the time measured from the third recloser “opening” to the third recloser “reclose”.

The reclose intervals shall have multiple settings between 0.3 and 1000 seconds. A reset selector switch or its equivalent shall be provided and have multiple settings of 3 to 1800 seconds. The reset time shall be the time from the last successful reclose to the recloser control re-initializing.

8.3 Selectable Time Current Curves (TCCs) - The selection of the TCCs shall be performed within the control panel without having to remove any bolts or handhole covers on the recloser switch. The TCCs shall have the ability to be modified using time multipliers and adders. The family of TCCs available must represent utility standard TCCs and coordinate with the District’s “T” link and “E” link fuses.

8.4 An operational counter counting the number of trips (opens) of the recloser switch

8.5 The capability to set phase, negative sequence and ground overcurrent elements. Phase and negative sequence minimum trip range is 10 to 1600 amps. Ground minimum trip range is 5 to 800 amps. Steady-state pickup and overcurrent elements (50/51) shall be within +/- 5%.

8.6 A push button switch for manually opening or closing the recloser switch. This switch shall be equipped with LED indicators to show an open or closed condition. Internal logic will be available to block tripping for cold load and instantaneous settings during manual closing.

8.7 One-touch function keys for the following functions:

8.7.1 Normal Reclosing / Non-Reclosing

8.7.2 Ground Trip Block / Normal Ground Tripping

8.7.3 Supervisory OFF

8.7.4 Alternate Profile #1

8.7.5 Alternate Profile #2

8.7.6 Alternate Profile #3

8.7.7 Option #1

8.7.8 Option #2

8.7.9 Option #3

8.8 The capability to perform sequence of events time-stamping for up to 25 event types - The panel shall be able to record oscillography that provides current and voltage waveforms along with protection element and recloser response status changes.

8.9 Eight configurable outputs for a District supplied RTU - Each status contact will be configurable to combine status functionality along with Boolean algebra. Minimum contact rating shall be 12-48 volt DC, 1 amp resistive.
All contacts shall be latching.

8.10 The ability to receive eight configurable external control input contact closures from a District supplied RTU - The signal level generated by the control panel shall not exceed 1 amp at 48 volt DC.

8.11 Electrical controls for remote or local electrical operation

8.12 The ability to operate normally from 120 volt power to close the recloser switch and be equipped to prevent closing of the switch if the 120 volt power is absent

8.13 The ability to prevent reclosing if the fault current magnitude is above certain programmable levels for both ground and phase

8.14 An LED type target board which has the option of resetting the targets manually or automatically (auto reset at the presence of load current)

8.15 A space heater suitable for operation at 120 volts

8.16 A fused convenience receptacle (3-wire) mounted within the control panel enclosure.

9. Cables

9.1 Control Cable

9.1.1 The control cable or any other cable between the recloser switch and the control panel shall be sufficient to connect the panel to the recloser switch.

9.1.2 The control cable or any other cable shall have manufacturer installed terminations on both cable ends. These terminations shall be the screwed, cannon plug type or the aircraft type connector. The control cable terminations shall be polarized so the male termination connects to the recloser and the female termination connects to the control panel.

9.1.3 The control cable shall be a multicolored cable properly jacketed for protection against severe atmospheric conditions, oxygen, acid, salts and alkalis.

9.2 Power Cable

9.2.1 If a power cable is required for a battery charger, low voltage closing, or voltage inputs for accessories, the cable shall be a minimum of 16 feet in length.

9.2.2 The power cable shall come with a manufacturer installed termination on one cable end and the other cable end will have no termination. (The District will use the end without termination to connect to the incoming AC power). The cable termination shall either be a screwed cannon plug type or an aircraft type connector.

9.2.3 The power cable shall be a multi-conductored cable properly jacketed for protection against severe atmospheric conditions, oxygen, acid, salts and alkalis.

10. Spare Parts

The price per complete set of spare gaskets and per complete set of spare bushings, which may be purchased at the option of the District, shall be furnished in Exhibit A.

11. Auxiliary and Control Power

11.1 The recloser mechanism shall be suitable for operation at 120 volt, single phase, 60 Hz. The recloser trip mechanism shall be rated for operation at 24 volt DC (±2 volts).

11.2 Three-wire, 120 volt, single-phase, 60 Hz AC power supply shall be made available by the District for the space heater and other control panel and recloser switch accessories.

12. Drawings and Diagrams

A minimum of 30 days before the date of delivery, the supplier shall furnish three copies each of the certified correct and approved for installation drawings as follows. One copy of each of these drawings shall also be supplied and shipped within the control panel door of each recloser.

12.1 Outline drawing of the recloser, showing dimensions and locations of all accessories

12.2 Drawing of the nameplate

12.3 Control schematic and wiring diagram

12.4 Installation - Operation - Maintenance manual

12.5 Control panel schematic drawing including all add-on accessories which were required to meet this specification

13. Test Reports

The supplier shall furnish:

13.1 One certified copy of the test reports for each recloser. These tests shall be a minimum of the routine tests described in ANSI C37.60.

13.2 MSDS for the insulating medium (not required for vacuum reclosers)

14. Service and Repair Capability

Because the expedited repair of line reclosers is necessary for the efficient and economic operation of District facilities, the District will only purchase line reclosers from bidders who have documented, to the satisfaction of the District, that service, repair and spare parts facilities are readily available.

15. Bidders' Data

15.1 For each rating of recloser, each bidder shall submit with their proposal complete data and information as requested on Exhibit “A” of this specification. A description of any proposed changes, additions or exceptions to the Specification shall be submitted along with reasons for the departure.

15.2 Bidder shall also submit:

15.2.1 Pad mounting details

15.2.2 Drawings of the complete control panel with an attached list itemizing the accessories in the control panel package

15.2.3 A detailed description of manufacturer’s control panel exchange program - This should include dollar values for exchange of identical panels for repair purposes.

16. Evaluation of Bids

The following factors will be considered in the analysis and evaluation of bids and subsequent bid award:

16.1 Proposed delivery

16.2 Past performance of bidder and product

16.3 Conditions of warranty

16.4 Completeness of bidder’s data

16.5 Construction details

16.6 Manufacturer’s control panel exchange program

17. Warranty

17.1 The successful bidder shall guarantee all parts of the line recloser against defects in material and workmanship for a minimum of 12 months from date of energization or 18 months from the shipping date, whichever comes first.

17.2 Upon written notice from the District, the successful bidder shall immediately repair or replace, at his own expense, all or any part of the line recloser that may prove to be defective during the period of this guarantee, whether installed initially or installed as repair or replacement under this guarantee.

17.3 The successful bidder further guarantees that the warranty for repaired or replaced material shall be of an equal duration as the original warranty period and shall start upon acceptance of such repaired or replaced material.

18. Delivery

The successful bidder shall deliver the line recloser(s) by the date shown on the Special Provision Sheet. Bidder will give notice to the District in writing when a change in delivery is anticipated. If at any time the District has reasonable cause to believe that delivery will not be made at the time and place specified, the District shall have the right to terminate the Purchase Order, but shall not be obligated to do so.

19. Shipment

19.1 Shipment shall be:

FOB Public Utility District No. 1 of Snohomish County
Operations Center Receiving
1802 75th Street SW
Everett, WA 98203-6264

19.2 Equipment damaged in shipment will be refused on delivery and it will be the bidder’s responsibility to arrange for 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.

19.3 The line recloser(s) shall be suitably packed to ensure against damage from weather or transportation, and in accordance with the requirements of common carriers.

19.4 Bidder shall be responsible for checking the shipping dimensions and weight of the proposed design for compatibility for railroad or truck shipment.

19.5 Two weeks prior to delivery the bidder shall notify the District in writing of the line recloser(s) delivery date.

Notice shall be sent to:

Public Utility District No. 1 of Snohomish County
Attention: System Planning & Protection O1
PO Box 1107
Everett, WA 98206-1107

20. 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.

21. 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.

22. General Bidding Conditions

The attached General Bidding Conditions are made a part of this Specification.