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2    S&C Instruction Sheet 695-505

Introduction

Qualified Persons

 WARNING

Only qualified persons who are knowledgeable in the installation, operation, and 
maintenance of overhead and underground electric distribution 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, insulated 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 and all materials included 
in the product’s instruction handbook before installing or operating Vista SD 

 

Underground Distribution Switchgear. Familiarize yourself with the Safety Information 
and Safety Precautions on pages 4 through 8. 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 Vista SD Underground Distribution 
Switchgear. Designate a location where you can easily retrieve and refer to this publication.

Proper Application

 WARNING

The equipment in this publication is only intended for a specific application. The 
application must be within the ratings furnished for the equipment. Ratings for the 
Vista SD Underground Distribution Switchgear are listed in the ratings table in 
Specification Bulletin 695-33. The ratings are also on the nameplate affixed to the 
product. 

Содержание Vista SD 101

Страница 1: ...Location of Safety Labels and Tags Single Way Vault Mounted Style 5 Multi Way Vault Mounted Style 6 Pad Mounted Style 7 Safety Precautions 8 Shipping and Handling Packing 9 Inspection 9 Handling 10 I...

Страница 2: ...hey 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 instr...

Страница 3: ...d user s claim All other warranties whether express or implied or arising by operation of law course of dealing usage of trade or otherwise are excluded The only warranties are those stated in Price S...

Страница 4: ...cautions are not followed NOTICE NOTICE identifies important procedures or requirements that can result in product or property damage if instructions are not followed Following Safety Instructions If...

Страница 5: ...er Circuits and Components Live G 6700 C WARNING Do Not Block Pressure Relief Device not shown G 6742 D WARNING Voltage Tester Always Test for Proper Operation G 9451 Figure 1 Location of safety label...

Страница 6: ...d Components Live G 6700 C WARNING Do Not Block Pressure Relief Device not visible G 6742 D WARNING Voltage Tester Always Test for Proper Operation G 9451 Figure 2 Location of safety labels Model 312...

Страница 7: ...e G 6742 D WARNING Voltage Tester Always Test for Proper Operation G 9451 E WARNING Keep Out Hazardous Voltage Inside G 6398 Figure 3 Location of safety labels Model 422 4 way pad mounted style unit s...

Страница 8: ...attempting to open a door The use of undue force may damage the door latching mechanism 7 SAFETY LABELS Do not remove or obscure any of the DANGER WARNING CAUTION or NOTICE labels 8 ENERGIZED BUSHINGS...

Страница 9: ...ardboard Inspection Examine the shipment for external evidence of damage as soon after receipt as possible preferably before removal from the carrier s conveyance Check the bill of lading to make sure...

Страница 10: ...ble for two way and three way switchgear assemblies See Figure 4 and Figures 5 and 6 on page 11 STEP 2 Arrange the hoist slings to distribute lifting forces equally between the lifting tabs STEP 3 Avo...

Страница 11: ...on Sheet 695 505 11 Shipping and Handling Figure 6 Hoisting a pad mounted style Vista SD switchgear assembly multi way assembly shown Figure 5 Hoisting a multi way vault mounted style Vista SD switchg...

Страница 12: ...es mounted in the horizontal orientation catalog number suffix V3 the clearance between the back of the bus work and the floor of the vault is approximately inch 13 mm Be sure the floor beneath the sw...

Страница 13: ...switchgear assembly is suspended by the hoist slings remove the mounting stand feet STEP 6 Lower the switchgear assembly through the manhole opening STEP 7 Re install the mounting stand feet removed i...

Страница 14: ...lt in damage to the bushings and bushing wells STEP 2 Install cable support brackets in accordance with the appropriate reference drawing included in the installation and operation information kit See...

Страница 15: ...single or multiple connection to realize the maximum momentary rating of the switchgear assembly For a multiple cable connection cables smaller than 1 0 copper or equivalent should not be used STEP 4...

Страница 16: ...og dimensional drawing Make sure the hinged roof section and all doors open and the latch closes without binding Binding indicates enclosure distortion that must be corrected by additional shimming Ac...

Страница 17: ...ee Figure 14 Open door far enough to permit the door holder mechanism to engage automatically STEP 5 To open the left hand door lift the finger latch See Figure 15 Open door far enough to permit the d...

Страница 18: ...tical position is a two person exercise especially on switchgear assemblies having four or more ways NOTICE The hinged roof cannot be placed in the second more vertical position if the hinged roof cou...

Страница 19: ...into the pit horizontally and up to the gear at a 90 angle Failure to follow these precautions can result in damage to the bushings and bushing wells STEP 4 Install cable support brackets in accordanc...

Страница 20: ...re See Figure 18 Then cut the plastic cable ties holding the longer lever arms in the down position STEP 3 At one end of the enclosure pivot the longer lever arm up and position it on the back side of...

Страница 21: ...con tinuous ground bus catalog number suffix O connect the ground bus to the enclosure ground pad Then connect the enclosure ground pad to the system ground in accordance with the user s standard prac...

Страница 22: ...s instruc tions Optional mounting provisions for fault indicators catalog number suffix F1 or F2 are available for Vista SD Underground Distribution Switchgear If mounting provisions are specified mo...

Страница 23: ...ld open mechanism At the other end of the enclosure push up on the hinged roof just enough to allow the left hand hold open mechanism latch to be released ensuring the right hand hold open latching me...

Страница 24: ...es between the cable and the conduit and cap all empty conduits to prevent the entry of moisture and rodents STEP 2 Wipe down the exterior of the enclosure with a clean damp cloth Refinish any scratch...

Страница 25: ...t because the switchgear may be subjected to dc test voltage when connected to the cable The dc withstand test voltages listed in the table are approxi mately equal to the ac test voltage Dc Cable Tes...

Страница 26: ...made after installa tion of the power cable system including terminations and joints but before the cable system is placed in normal service A maintenance test is a field test made during the operati...

Страница 27: ...ging the cable and regrounding the cable Failure to follow these recommendations can result in a flashover injury and equipment damage NOTICE When VLF cable testing has been completed or has been inte...

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