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VacuFuse
Self-Resetting Interrupter
®
Outdoor Distribution (5 kV, 15 kV, and 25 kV)
Table of Contents
Section
Qualified Persons . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Read this Instruction Sheet . . . . . . . . . . . . . . . . . . . 2
Retain this Instruction Sheet . . . . . . . . . . . . . . . . . . . 2
Video . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Proper Application . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Operating Considerations . . . . . . . . . . . . . . . . . . . . . 4
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Understanding Safety-Alert Messages . . . . . . . . . . . 5
Following Safety Instructions . . . . . . . . . . . . . . . . . . 5
Replacement Instructions and Labels . . . . . . . . . . . 5
Location of Safety Labels . . . . . . . . . . . . . . . . . . . . . 6
. . . . . . . . . . . . . . . . . . . . . . . . . 7
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Returning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Before Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
into the Cutout Mounting . . . . . . . . . . . . . . . . . . .10
the Cutout Mounting . . . . . . . . . . . . . . . . . . . . . . .11
January 11, 2021
© S&C Electric Company 2019-2021, all rights reserved
Installation and Operation
Page
For Overhead Distribution
Transformer Protection
Section
is Found Open . . . . . . . . . . . . . . . . . . . . . . . . . . .13
on the Transformer . . . . . . . . . . . . . . . . . . . . . . . .13
and Position Indicator . . . . . . . . . . . . . . . . . . . . . .14
Opening and Closing the
VacuFuse Interrupter . . . . . . . . . . . . . . . . . . . . . .15
Setting the MODE SELECTOR Lever . . . . . . . . . . . .16
from the Cutout Mounting . . . . . . . . . . . . . . . . . . .18
. . . . . . . . . . . . . . . . . . . . . . . . . . . 20
®
-The S&C Loadbreak Tool . . . . . . .21
Instruction Sheet 465-500
Page
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Summary of Contents for S&C VacuFuse
-
Page 1: Table Of Contents
VacuFuse Interrupter . . . . . . . . . . . . . . . . . . . -
Page 2: Introduction
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. -
Page 3: Proper Application
. The application must be within the ratings furnished for the equipment . Ratings for the VacuFuse Self-Resetting Interrupter are listed in the ratings table in Specification Bulletin 465-31 . They are also etched on the body of the interrupter . -
Page 4: Operating Considerations
Then, it will close, and the fuse-link curve will again become active (TCC1). If the fault is still on the line, the VacuFuse Self-Resetting Interrupter will open and lock open. If fault current is not still on the line, the Sequence Reset Timer will begin timing. -
Page 5: Safety Information
Safety Information Understanding Several types of safety-alert messages may appear throughout this instruction sheet and on labels and tags attached to the VacuFuse Self-Resetting Interrupter. Familiarize Safety-Alert yourself with these messages and the importance of these signal words: Messages DANGER “DANGER”... -
Page 6: Location Of Safety Labels
Part Number DANGER VacuFuse ® Self-Resetting Interrupter may be energized . . . G-9740 Fuse Link (Label displaying the VacuFuse interrupter's protection curve .) TCC Curve Optional label . For more information, contact S&C Electric Company . S&C Instruction Sheet 465-500... -
Page 7: Safety Precautions
. procedures and rules . 8 . DO NOT DISASSEMBLE the VacuFuse Self- SAFETY LABELS. Do not remove or obscure any of Resetting Interrupter . There are no customer- “DANGER,” “WARNING,”... -
Page 8: Shipping And Handling
If concealed damage is discovered: damage. This packaging is not suitable for outdoor storage 1. Notify the delivering carrier within 15 days of receipt of as it can pool water and damage VacuFuse interrupters. shipment. After receipt, VacuFuse interrupters should be stored 2. -
Page 9: Installation
Installation Before Starting Familiarize yourself with the parts of the VacuFuse Self- Resetting Interrupter. See Figure 3. Position Indicator Indicator Jaw-end contact Indicators Pull-ring Hinge-end contact Trunnion Hand grip OPEN/CLOSE lever MODE SELECTOR lever Figure 3. VacuFuse Self-Resetting Interrupter—Overview. S&C Instruction Sheet 465-500... -
Page 10: Installing A Vacufuse Self-Resetting Interrupter
VacuFuse Self-Resetting Interrupter . The VacuFuse interrupter is different from other cutout-mounted devices . Failure to properly handle a VacuFuse interrupter with a hotstick and/or an extendostick may lead to serious injury or death . STEP 1. If using an existing S&C cutout mounting... -
Page 11: Closing The Vacufuse Interrupter Into
VacuFuse Self-Resetting Interrupter will operate in Non-Reclose (NR) mode for the first 10 seconds. If a fault is not present on the line, after 10 seconds the VacuFuse Self-Resetting Interrupter will revert to Auto mode. If a fault is present in the first 10 seconds, the VacuFuse Self- Resetting Interrupter will trip and lock out. - Page 12 VacuFuse interrupter properly closes and latches into the cutout mounting. 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 the Auto or NR mode.
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Page 13: Operation
STEP 1. VacuFuse Self-Resetting Interrupter by pushing up on the OPEN/CLOSE lever fi rmly using the Figure 10. Opening the VacuFuse interrupter by pushing up on straight prong of the Talon tool or a distribution the OPEN/CLOSE lever. prong. See Figure 10. -
Page 14: Understanding The Led Indicators
Understanding the LED Indicators and Position Indicator LED Indicators There are two LED indicators on the base of the VacuFuse interrupter. See Figures 11 and 12. The HEALTH INDICATOR LED is white and indicates the “health” state of the VacuFuse interrupter. When the... -
Page 15: Vacufuse Interrupter
The vacuum interrupter inside the VacuFuse interrupter will open, and the POSITION indicator will show the green target. See Figure 15. Figure 15. Opening the VacuFuse interrupter by pushing up on the OPEN/CLOSE lever. S&C Instruction Sheet 465-500... -
Page 16: Setting The Mode Selector Lever
The VacuFuse Self-Resetting Interrupter is in the Auto mode when the curved label on the side of the VacuFuse interrupter’s housing is fully covered and the label on the MODE... - Page 17 The VacuFuse Self-Resetting Interrupter is in the NR mode when the curved line is visible on the side of the VacuFuse interrupter’s housing. The NR LED on the base of the VacuFuse interrupter will blink at a 2-second interval.
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Page 18: From The Cutout Mounting
Closed position . The vacuum interrupter is in the Closed position when the POSITION indicator at the base of the VacuFuse interrupter displays a red target . Removing the VacuFuse interrupter from its cutout mounting with... -
Page 19: Removing The Vacufuse Interrupter
Operation STEP 3. Removal Using Insulated Gloves: Remove 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 of the cutout mounting using gloved hands. -
Page 20: Troubleshooting
Open the VacuFuse interrupter using target) position and the white LED is fast- mode and may no longer be capable of the OPEN/CLOSE lever . If the VacuFuse blinking at one-second intervals . interrupting fault current . interrupter will not open, bypass or... -
Page 21: Removing The Vacufuse Interrupter From The Cutout Mounting Using Loadbuster ® -The S&C Loadbreak Tool
Closed position and operating the OPEN/CLOSE lever to the Open position does not work, or the VacuFuse interrupter is to be removed from its cutout mounting in the Closed position for any other reason, it may be safely removed using a Loadbuster tool. - Page 22 VacuFuse Self-Resetting Interrupter and the Loadbuster tool’s anchor must be hooked to the attachment hook on the far side of the VacuFuse interrupter. The Loadbuster tool should never be attached...
- Page 23 Resetting Interrupter is opened. Avoid jerking and hesitation. The resetting latch will keep it open. Generally, there is no indication of circuit Figure 27. The Loadbuster tool attached to a VacuFuse Self- interruption, the only sound is that of the Load- Resetting Interrupter.
- Page 24 Note: When the VacuFuse Self-Resetting Interrupter is opened with a Loadbuster tool, the vacuum interrupter inside the VacuFuse interrupter will not be triggered open and will remain closed. Figure 28. Resetting a Loadbuster tool. S&C Instruction Sheet 465-500...
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