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    S&C Instruction Sheet 465-500

Introduction

Qualified Persons

 WARNING

Only qualified persons who are knowledgeable in the installation, operation, and 
maintenance of distribution fusing equipment, along with all associated hazards, 
may install, operate, and maintain the equipment covered by this publication . A 
qualified person is someone who is trained and competent in:
•  The skills and techniques necessary to distinguish exposed live parts from nonlive 

parts of electrical equipment

•  The skills and techniques necessary to determine the proper approach distances 

corresponding to the voltages to which the qualified person will be exposed

•  The proper use of special precautionary techniques, personal protective  

equipment, insulating and shielding materials, and insulated tools for working on 
or near exposed energized parts of electrical equipment

These instructions are intended ONLY for such qualified persons . They are 
not intended to be a substitute for adequate training and experience in safety  
procedures for this type of equipment .

Read this  

Instruction Sheet

NOTICE

Thoroughly and carefully read this instruction sheet before installing or 

 

operating your VacuFuse Self-Resetting Interrupter . Familiarize yourself with 
the Safety Information and Safety Precautions on pages 5 through 7 . The latest  
version of this publication is available online in PDF format at 

sandc.com/en/

support/product-literature/ .

Retain this  

Instruction Sheet

This instruction sheet is a permanent part of your VacuFuse Self-Resetting Interrupter. 
Designate a location where you can easily retrieve and refer to this publication. 

Video

A video of the installation and operation procedures in this instruction sheet is available 
at 

sandc.com/vacufuse-video

. The goal of the video is to provide a clear and simple 

visual reference. In no way is the video meant as a complete replacement of these written 
instructions.

Summary of Contents for VacuFuse

Page 1: ...ons and Labels 5 Location of Safety Labels 6 Safety Precautions 7 Shipping and Handling Inspection 8 Packing 8 Handling 8 Storage 8 Returning 8 Installation Before Starting 9 Installing a VacuFuse Sel...

Page 2: ...These instructions are intended ONLY for such qualified persons They are not intended to be a substitute for adequate training and experience in safety procedures for this type of equipment Read this...

Page 3: ...d have a maximum voltage rating equal to or greater than system line to line voltage when used in phase to phase applications The VacuFuse Self Resetting Interrupter can be applied on the primary side...

Page 4: ...d or obligations described in S C s Price Sheet 150 Standard Conditions of Sale Immediate Purchasers in the United States or Price Sheet 153 Standard Conditions of Sale Immediate Purchasers Outside th...

Page 5: ...requirements that can result in product or property damage if instructions are not followed Following Safety Instructions If you do not understand any portion of this instruction sheet and need assist...

Page 6: ...n for Safety Labels Location Safety Alert Message Description Part Number A DANGER VacuFuse Self Resetting Interrupter may be energized G 9740 B Fuse Link TCC Curve Label displaying the VacuFuse inter...

Page 7: ...in accordance with safe operating procedures and rules 4 SAFETY LABELS Do not remove or obscure any of the DANGER WARNING CAUTION or NOTICE labels and tags Remove tags ONLY if instructed to do so 5 EN...

Page 8: ...XS Cutout Mounting and miscellaneous mounting hardware for securing the VacuFuse Self Resetting Interrupter to the pole Handling NOTICE DO NOT DROP the VacuFuse Self Resetting Interrupter or subject...

Page 9: ...urself with the parts of the VacuFuse Self Resetting Interrupter See Figure 3 Figure 3 VacuFuse Self Resetting Interrupter Overview Hinge end contact Jaw end contact Trunnion Pull ring Hand grip MODE...

Page 10: ...urnished only if specified through the addition of catalog number suffix B or C to the VacuFuse interrupter catalog number Note the placement of the external tooth lockwasher between the mounting brac...

Page 11: ...hen the unit was in Auto mode the device will operate in Auto mode If a fault is present the device will trip and enter its test sequence When closing with the MODE SELECTOR lever down The VacuFuse Se...

Page 12: ...STEP 5 Disengage the prong from the pull ring taking care to avoid pulling the VacuFuse interrupter open STEP 6 Verify the MODE SELECTOR lever is in the proper position for the application either in t...

Page 13: ...ne minute See Figure 9 Follow these steps if the VacuFuse Self Resetting Interrupter has operated and is in the Open position STEP 1 Remove the VacuFuse Self Resetting Interrupter from its mounting if...

Page 14: ...e VacuFuse interrupter is powered the LED will flash white at a 30 second interval to indicate a healthy condition If the VacuFuse interrupter is in an unhealthy state the white LED will fast blink at...

Page 15: ...ter WARNING Do not close the VacuFuse Self Resetting Interrupter found in the Open position using the OPEN CLOSE lever until the cause of the fault current has been determined and repaired The VacuFus...

Page 16: ...in the Auto mode position Figure 18 on page 17 shows the MODE SELECTOR lever down in the NR non reclose mode position Auto Mode In the Auto mode the VacuFuse inter rupter will respond to fault curren...

Page 17: ...ling Tool or a distribution prong See Figure 19 The lever will lock into the vertical position To place the MODE SELECTOR lever in the Auto mode Rotate the MODE SELECTOR lever to the Up position using...

Page 18: ...om its cutout mounting with the vacuum interrupter in the Closed position may cause arcing equipment damage serious injury or death To remove the VacuFuse interrupter from its cutout mounting STEP 1 O...

Page 19: ...e the VacuFuse Self Resetting Interrupter from a 125 kV BIL rated or a 150 kV BIL rated cutout mounting with gloved hands as shown in Figures 21 and 22 Figure 21 Lifting the trunnion out of the hinge...

Page 20: ...interrupter using the OPEN CLOSE lever If the VacuFuse interrupter will not open bypass or de energize the VacuFuse interrupter and remove it from its cutout mounting or open and de energize it using...

Page 21: ...NING DO NOT attempt to use a Loadbuster tool to open a VacuFuse Self Resetting Interrupter while climbing the pole Engagement of a Loadbuster tool in this position is difficult and may result in impro...

Page 22: ...acuFuse interrupter The Loadbuster tool should never be attached with its anchor hooked on the closest side of the VacuFuse interrupter as shown in Figures 25 and 26 Attaching the tool in this manner...

Page 23: ...with which the VacuFuse Self Resetting Interrupter is opened Avoid jerking and hesitation The resetting latch will keep it open Generally there is no indication of circuit interruption the only sound...

Page 24: ...copethetool completely so the trigger can reset itself Depress the telescoping tube until the orange paint on the inner tube assembly is no longer visible Check for proper resetting by extending the t...

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