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Summary of Contents for Southern States CVB-2
- Page 1 TYPE CVB-2 Vertical Break Disconnect Switch 15.5 – 245 kV, 2000A INSTALLATION & INSTRUCTION MANUAL...
- Page 2 Page II The Quality Name in High Voltage Switching...
- Page 3 Page III The Quality Name in High Voltage Switching Safety Information...
- Page 4 The Quality Name in High Voltage Switching LIMITED WARRANTY Southern States, LLC (“SSLLC”) warrants only to the Warranty Holder (hereinafter defined as the “End User” or the “Immediate Purchaser”, as applicable, pursuant to the terms and conditions of this Limited Warranty as set forth below), that the Product identified below will, upon shipment, be free of defects in workmanship and material for the applicable Warranty Period.
- Page 5 Equipment. • The Purchaser will, within seven (7) days after receipt of the Equipment, inspect the Equipment and identify and notify Southern States in writing of any missing parts, damage or defects observed in the Equipment.
- Page 6 Southern States consent. • In the event that Southern States is found by a court of competent jurisdiction or a properly empaneled arbitral body to be liable to the Purchaser for any reason, Southern States shall be entitled to a reduction in the liability by taking into account the exceptions provided by statute, law, and any counterclaims Southern States may have against Purchaser.
- Page 7 Page VII The Quality Name in High Voltage Switching Type CVB-2...
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Page 8: Table Of Contents
Page VIII The Quality Name in High Voltage Switching Table of Contents Chapter Page Table of Contents ........................... VIII List of Tables and Figures ........................ IX Summary & Introduction ........................1 Summary ............................1 Important ............................1 Introduction ............................ 2 Ratings ............................ -
Page 9: List Of Tables And Figures
Table 3: Recommended Installation and Maintenance Table ............20 Figures Page Figure 1: Typical CVB-2 Single Pole Switch & Common Terminology ..........4 Figure 2: Blade shown fully open for horizontal mounting ..............7 Figure 3: Stack Insulators ........................8 Figure 4: Switch Adjustment in Open Position ................... -
Page 10: Summary & Introduction
The sales contract contains the entire obligations of Southern States. The Warranty contained in the contract between the parties is the sole warranty of Southern States. Any statements contained herein do not create new warranties or modify the existing warranty. -
Page 11: Introduction
(121 kV and above). The instructions contained within this manual are necessary for the safe installation, maintenance, and operation of the Type CVB-2 switch. A qualified person, familiar with this of type equipment, should carefully read and follow the instructions. -
Page 12: Ratings
Page 3 of 21 Summary & Introduction Ratings Table 1: Ratings RATINGS Maximum Voltage Rating (kV) 15.5 48.3 72.5 BIL (kV) 900/1050 ADDITIONAL RATINGS Rated Power Frequency 60 Hz Continuous Current 2000 A Short-Time Symmetrical Withstand (3 Sec.) 63 kA RMS Peak Withstand 164 kA -40°C to +50°C Standard... -
Page 13: Product Description
Product Description Product Description Typical Disconnect Switch Figure 1: Typical CVB-2 Single Pole Switch & Common Terminology A. Jaw and blade tip – Reverse loop jaw contact fingers with silver-to-silver current transfer surfaces. B. Blade – Hard drawn, bus copper tubing. -
Page 14: Receiving, Handling & Storage
Receiving, Handling & Storage Receiving, Handling & Storage Unpacking The CVB-2 switch consists of: Live parts – blades with hinges, terminal pads and contacts; base housing with mounting angles attached; insulators; interphase and control pipes with hardware; and outboard bearing and operator. -
Page 15: Installation & Adjustment Procedures
Page 6 of 21 Installation & Adjustment Procedures Installation & Adjustment Procedures Recommended Tools & Values Table 2: Recommended Tools and Torque Values Recommended Tools Recommended Torque Values Type Sizes Bolt/Nut size Torque (Ft-lb) 50 (S. Steel) Hand Wrenches 15/16”, 3/4", 1/2”... -
Page 16: Preferred Switch Assembly Method
Page 7 of 21 Installation & Adjustment Procedures Preferred Switch Assembly Method: When insulators are shipped installed on the switch and the switch has been adjusted at the factory, proceed to Mounting Switch on Structure. Set up bases at ground level on transverse beams. Make sure the base support beams •... -
Page 17: Stack Insulators
Page 8 of 21 Installation & Adjustment Procedures Stack Insulators Consult your single-pole assembly and single-pole sub-assembly drawings for proper • position of levers, spacers, etc. Sort out hardware, and then mount the insulators. Leave all bolts snug—do not tighten! Figure 3: Stack Insulators... -
Page 18: Mounting Live Parts On Insulators
Page 9 of 21 Installation & Adjustment Procedures Mounting Live Parts on Insulators Horizontal Mounted Switch 1. After stacking insulators, turn the rear-rotating insulator counterclockwise to the fully open position against the bearing stop. Mount the live parts with the blade still in the fully open position (See Figure 3). -
Page 19: Adjustment Of Switch In Closed Position
Page 10 of 21 Installation & Adjustment Procedures Vertical or Underhung Mounting Switch Rotate the rear insulator stack to open the single pole. Refer to the single-pole sub-assembly drawing for the correct angle of blade opening. If adjustment is required, use the open position stop bolt on the strut to adjust the blade until it is at the required angle (See Figure 4). -
Page 20: Mounting Switch On Structure
Page 11 of 21 Installation & Adjustment Procedures Mounting Switch on Structure Rigging used to lift the poles should be attached to the base! Lift poles onto structure, making sure the pole is in the closed toggle position. It may be desirable to tie the fork to the strut to ensure the blade does not come open during lifting. -
Page 21: Arcing Horn Adjustment
Page 12 of 21 Installation & Adjustment Procedures Arcing Horn Adjustment Check to see that the blade makes contact against the stationary horn above the contact shoes and maintains contact all the way down to the bottom of the blade stroke. The stationary horn may be bent by hand until it makes contact as stated above. - Page 22 Page 13 of 21 Installation & Adjustment Procedures Figure 8: Alternative Operating Mechanisms Refer to the Operating Mechanism Drawing provided with your switch & follow these steps: Have all switch poles completely closed. • Install all components shown on the Operating Mechanism Drawing, including •...
- Page 23 Page 14 of 21 Installation & Adjustment Procedures Figure 9: Typical Operating Pipe Arrangement Figure 10: Typical Operating Arrangement GENERAL INSTALATION NOTE: When a switch uses an auxiliary switch arm, installation will be easier if this pole is adjusted before installing the interphase pipe. This will eliminate trying to coordinate and adjust all three poles at once.
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Page 24: Operating Mechanism Adjustment (3 Phase Installation)
Page 15 of 21 Installation & Adjustment Procedures Operating Mechanism Adjustment (3 Phase Installation) Position all Grounding Switch poles closed and all Disconnect Switch poles open. The Adjustable Arm setting on the Op-Mech Drawing is a calculated dimension. Adjust as required for exact setting. The Adjustable Arm radius is too short if the Grounding Switch does not open fully (Blade in horizontal position). - Page 25 Page 16 of 21 Installation & Adjustment Procedures All poles of the fully adjusted switch should close completely and operate together. Slight adjustment of the Hinge Assembly Clamping Bolts may be necessary to coordinate all three poles. Rapid operation of the manual handle may be necessary to achieve full closing of all three poles.
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Page 26: Final Switch Adjustments (Tuning)
Page 17 of 21 Installation & Adjustment Procedures Final Switch Adjustments (Tuning) 1. The operating mechanism is intended to fully open and fully close the disconnect switch by rotating the vertical operating pipe about 180 using an operator (manual or electrical). The interphase pipe controls the individual operation of each switch pole, using a push/pull control. - Page 27 Page 18 of 21 Installation & Adjustment Procedures 3.1. Worm gear operator (SEGO – Safety Enhanced Gear Operator) (Optional) 3.1.1. The weight of the vertical operating pipe should be supported by pipe collar by maintaining the 1/4”-3/8” gap (Figure 14). 3.1.2.
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Page 28: General Instructions For Threaded Clevises
Page 19 of 21 Installation & Adjustment Procedures General Instructions for Threaded Clevises When threaded clevises are specified, one is generally attached to the adjustable arm, and two more to the center phase switch arm (refer to the plan view of the operating mechanism drawing and the illustration below). -
Page 29: Recommended Inspection Maintenance
Recommended Inspection Maintenance Recommended Inspection Maintenance Southern States’ disconnect switches are designed to operate with minimum maintenance. While disconnecting switches are not readily serviced at frequent intervals, periodic inspection is important for satisfactory operation and maximized overall life. Frequency of inspection and maintenance depends on the installation site, weather, atmospheric conditions, experience of operating personnel, and any special operation requirements. -
Page 30: Patrolling Inspection (6 Months)
Page 21 of 21 Recommended Inspection Maintenance Patrolling Inspection (6 Months) The patrolling inspection is a largely visual inspection on an energized unit in service. The frequency of the inspection is determined by the local conditions and policies of the owner of the equipment. Inspect the insulators for breaks, cracks, burns, or cement deterioration. - Page 32 30 Georgia Avenue Hampton, Georgia 30228 Phone: 770-946-4562 Fax: 770-946-8106 E-mail: support@southernstatesllc.com http://www.southernstatesllc.com ©2021 Southern States, LLC IB-105-CVB2 245- R7 02112021 Printed U.S.A.
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