Page 1: Table Of Contents
Remote Supervisory Vista Underground Distribution Switchgear ® Pad-Mounted, Dry-Vault-Mounted, Wet-Vault-Mounted, and Undercover™ Styles Operation Table of Contents Section Page Section Page Introduction Electrically Opening, Closing, or Grounding a Way . . . . . . . . . . . . . . . . . . . . . . . . . .16 Qualified Persons .
Page 2: Introduction
PDF format at sandc.com/en/support/ product-literature/. Retain this This instruction sheet is a permanent part of your Remote Supervisory Vista Underground Distribution Switchgear. Designate a location where you can easily retrieve and refer Instruction Sheet to this publica tion.
Page 3: Safety Information
Safety Information Understanding Several types of safety-alert messages may appear throughout this instruction sheet and on labels attached to the Remote Supervisory Vista Switchgear. Familiarize yourself with Safety-Alert these types of messages and the importance of these various signal words:...
Page 4: Location Of Safety Labels
Safety Information Location of Safety Labels Pad-mounted enclosure Top of switchgear Top of switchgear Reorder Information for Safety Labels Location Safety-Alert Message Description Part Number WARNING Keep Out—Hazardous Voltage Inside G-6681 DANGER Hazardous Voltage—Always Consider Circuits and Components Live . . . G-6700 DANGER Never Drill Into Tank—Hazardous Voltage, Contains Pressurized SF6 Gas...
Page 5: Safety Precautions
Safety Precautions DANGER Switchgear contains high voltage. Failure to observe the precautions below will result in serious injury or death. Some of these precautions may differ from company operating procedures and rules . Where a discrepancy exists, users should follow their company’s operating procedures and rules .
Page 6: Components
These switches also provide a visible gap when remotely when an RTU and a communi cation device are open and internal grounding for all three phases. When integrated with the remote supervisory Vista motor opera- they are fitted with motor operators and controls, these tor and controls.
Page 7 Components Motor operator User-specified communi cation control boards device (optional) Operation selector Operating disk Figure 4. Open position indication on the motor operator. User-specified RTUs (optional) Figure 5. Low-voltage enclosure. LOCAL/REMOTE switch Battery charger Position- Operation pushbuttons indicating LEDs PUSH-TO-TEST LAMPS button POWER Receptacle for portable...
Page 8 Components Submersible tank Switch terminals are equipped with 600-ampere bushings or optional 200-amp bushing wells Fault-interrupter terminals are equipped with 20 0 - ampere bushing wells. Optional 600-ampere bushings (option suffix “-M2” or “-M3”) are available Termination side of switchgear TRIP indicators Viewing window under the for single-pole...
Page 9: Understanding The Gas Pressure Gauge
Components Understanding the Gas Pressure Gauge Green Vista switchgear incorporates a temperature-compensated zone Green/Yellow gas pressure gauge inside the tank to provide indication of zone the SF gas pressure. The gas pressure gauge includes four distinct color-coded zones. See Figure 8. Orange Orange If the needle is within a particular zone as described...
Page 10: Operation
Operation Manually Opening, Closing, or Grounding a Way WARNING Do not operate this switchgear if the SF -gas pressure gauge is in the Red zone . Failure to follow this precaution can result in a flashover and equipment damage. Make sure the SF -gas pressure gauge is in the Green zone (or the Green-and-Yellow striped zone) by lifting the viewing window cover on way one.
Page 11 Operation STEP 2. Remove the electrical-operation mechanical blocking key from the motor operator. Verify the operation selector is in the far right posi tion. This allows operation between Closed and Open positions (see Figure 12) and prevents inad vertent operation directly from the Closed position to/from the Grounded position.
Page 12 Operation STEP 5. Insert the manual operating handle into the Manual operating handle Operating mechanism notch of the motor operator operating mecha- nism, as shown in Figure 15. STEP 6. Rotate the manual operating handle in the appropriate direction to open, close, or ground the load-interrupter switch or three-pole fault interrupter.
Page 13 Operation STEP 7. When operating from Closed to Open position, the oper ating handle must be rotated all the way to the line, as shown on the label to recharge the mechanism. See Figure 16 on page 12. For the three-pole fault interrupter, the operating handle cannot be removed until the mecha nism is fully charged.
Page 14: Locking Out Grounded Position
Operation WARNING ALWAYS make sure the cables con nected to the load- interrupter switch or fault interrupter are de-energized before grounding the switchgear . Failure to fol- low this precaution can result in a flashover and equipment damage. STEP 8. If operation is to the Grounded position, rotate the operation selector to the far left and make sure the cables connected to the load-interrupter...
Page 15: Locking In Closed, Open, Or Grounded Position
Operation Locking In Closed, Open, or Grounded Position To lock a motor operator into position, insert a padlock through the operating mechanism and the center hole in the locking collar. See Figures 21 through 23. Operating Locking collar mechanism Figure 21. Locked in the Closed position. Figure 22.
Page 16: Electrically Opening, Closing, Or
Operation Electrically Opening, Closing, or Grounding a Way LOCAL/REMOTE switch NOTICE When electrically operating a way using a motor operator more than two times in succession (for example, running multiple operations during a testing sequence), please allow a 15-second period between each successive operation .
Page 17 Operation Make sure the operating handle is removed STEP 4. from the operating disk of the motor operator. See Figure 27. STEP 5. Make sure the electrical-operation mechanical blocking key is set in the motor operator operating disk. See Figure 28. Manual operating handle Figure 27.
Page 18 Operation STEP 6. If the operation selector is blocking operation, rotate the operation selector out of the way as shown in Figure 29. It may be necessary to remove the electri cal-operation mechanical blocking key to move the operation selector. The operation selector prevents inadvertent operation of the motor operator.
Page 19 Operation STEP 7. Press the PUSH TO TEST LAMPS pushbutton WARNING on each motor operator control board to ensure all of the LEDs are working. See Figure 32. ALWAYS make sure the cables con nected to the load- STEP 8. The LOCAL/REMOTE switch should already interrupter switch or fault interrupter are de-energized be in the Local position.
Page 20: Motor Operator Decoupling
Operation Motor Operator Decoupling STEP 1. Loosen and remove the bolt from the stop ring located on the operating disk collar. See Figure 33. STEP 2. Lift the motor operator over the operating shaft of the gear. See Figure 34. STEP 3. For submersible applications, do not remove the cable from the motor operator.
Page 21 Operation STEP 4. Reposition the motor operator to one side of the operating shaft. See Figure 36. STEP 5. Refasten the bolt to the stop ring located on the operating disk collar. See Figure 37. Figure 36. Reposition the motor operator. Figure 37.
Page 22: Checking For Voltage Using Optional
Operation Photocell TEST window TEST button PHASE indicator Before using the VOLTAGE indicator, thoroughly clean the surface Figure 38. VOLTAGE indicator with the Test feature. Checking for Voltage Using Optional A blank LCD A flashing VOLTAGE Indicator panel indicates lightning bolt absence of indicates voltage at...
Page 23 Operation STEP 3. Test the VOLTAGE indicator for proper Test circuitry can be powered operation as follows: by flashlight or bright sun (a) Shine a fl ashlight approximately 4 inches (102 mm) above the photocell, and simultaneously cover the TEST button with a gloved fi nger. See Figure 41.
Page 24 Operation (c) If the dot or any of the fl ashing light ning bolts The absence of a dot in TEST window indicates the do not appear, make sure the TEST button is VOLTAGE indicator is not in Test mode. completely covered with a gloved fi nger so no light shines on the photocell and there is ade- quate light (provided either by a fl ashlight or the...
Page 25: Low-Voltage Phasing Using Optional
Operation Low-Voltage Phasing Using Optional VOLTAGE Indicator with Phasing Phasing Pin 1 Phasing Pin 2 Phasing Pin 3 STEP 1. Clean the surface and phasing pins of the VOLT- AGE indicator of dirt and debris. See Figure 45. STEP 2. Test the VOLTAGE indicators for proper opera- tion by following the “Checking for Voltage Using Optional Voltage Indicator”...
Page 26 Operation STEP 4. Determine the phase-to-phase relationships of the two ways to be phased as follows: (a) Remove the test probe of the voltmeter from the switchgear tank. (b) Place one of the test probes on Phasing Pin 1 of the first way and place the other probe on Phasing Pin 1 of the second way.
Page 27: Maintenance
Maintenance★ Components No maintenance is required for Vista Remote Supervisory Under g rou nd Dist r ibut ion Sw itchgea r. However, occasional inspection of the switchgear and exercising of the load-interrupter switches and fault interrupters are recommended. For specification data on battery chargers and battery packs, refer to S&C Data Bulletin 682-97.
Page 28: Returning Equipment To Service
Maintenance Returning Equipment to Service When returning the equipment to service, the following procedures should be observed: STEP 1. Make sure the load-interrupter switch and Padlock fault-interrupter grounding means removed. STEP 2. Make certain the load-interrupter switches and fault interrupters are in the cor rect Open or Closed positions.
Page 29: Maintenance Recommendations In
Maintenance Maintenance Recommendations in Extremely Corrosive Environments For applications involving exposure to extremely corrosive environmental conditions (i.e. industrial chemicals, CaCl etc.) that may affect the condition of the switchgear tank, S&C’s recommended periodic cleaning could provide extended life. For units having already experienced some corrosion, follow the instruction in the “Enclosure Finish”...
Page 30: Dielectric Testing
Dielectric Testing Routine Switchgear Testing Dielectric testing on phases A and C can be performed using standard industry practices in accordance with For the convenience of users who normally perform the warnings and maximum test voltages indicated on electrical tests on system compo nents such as switchgear, this page.
Page 31: Cable Testing And Fault Locating
Dielectric Testing Cable Testing and Fault Locating DANGER Dc testing of installed cables is performed to determine Do not exceed the test voltages given in Table 1 on the condition of the cables and to locate faults. Industry page 30 and Table 2 . Exceeding the test voltages standards, such as IEEE 400, “IEEE Guide for Making can cause a flashover of the isolating gap or phase- High-Direct-Voltage Tests on Power Cable Sys tems in the...
Page 32: Resistance Measurement
Dielectric Testing Resistance Measurement DANGER De-energize the Vista Underground Distribution Switchgear before performing resistance measurements described in this procedure . Follow all applicable safety procedures . Failure to de-energize the Vista Underground Distribution Switchgear before taking the resistance measurements can result in serious injury or death .

This manual is also suitable for:

Undercover

S&C Remote Supervisory Vista Operation Manual

Table of Contents

Introduction

Safety Information

Safety Precautions

Operation

Components

Maintenance

Dielectric Testing

Quick Links

Table of Contents

Related Manuals for S&C Remote Supervisory Vista

Summary of Contents for S&C Remote Supervisory Vista

This manual is also suitable for:

Table of Contents