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Powered by Safety

Installation

Low Voltage Arc Resistant Switchgear (LVSWGR-AR

)

Equipped with Magnum DS Circuit Breakers

01.4IB.26263B

2. Join the clean contact surfaces by using the

hardware provided.

The correct length of bolt must be used

in each joint to ensure that electrical

clearances at bolt locations are maintained.

As a general rule, when using ½ inch

diameter bolts, the bolts should be 1 inch

longer than the combined thickness of the

copper bars being bolted together.

For example, if three ¼ inch thick copper

bars are to be connected, the bolt should

be 1-¾ inch long. In addition to proper

length bolts, the bolt assembly must

include flat washers, split ring lock washers,

and nuts. All bus joint hardware is

zinc-plated, dichromate treated, high

strength steel. Cap screws are ½-13 SAE

Grade 5. See Figure 7 for proper hardware

assembly.

Figure 7

Ground Bus Splice Bolt Assembly

a. Bolt

b. Flat Washer

c. Bus Bar

d. Split Lock Washer

e. Nut

3. In some cases, external connections are

made to metal-enclosed switchgear bus by

bars. The metal-enclosed switchgear bars

are normally silver plated. Unplated bars,

either copper or aluminum, should not be

used to connect to plated bars.

4. All field assembled primary conductor

joints and terminations must be insulated

before the operating voltage is applied.

Note:

All hardware must be tightened to the

torque values listed in Table D, Bolt

Torque Values for Powell Low Voltage

Metal-Enclosed Switchgear.

Refer to Figure 8 for a typical main bus splice

connection.

The operating temperature of conductors in

metal-enclosed switchgear may reach 105°C.

Any insulating material used in the

metal-enclosed switchgear must be suitable

for this temperature.

CAUTION

All exposed primary bus, cable joints, and

connections must be insulated to maintain

system insulation and arc resistant ratings.

CAUTION

I. M

AIn

SSeMBly

nSulAtIon

To insulate the main bus assembly follow these

instructions:

1. Remove the compartment covers.

2. Bolt the splice plates and bus bars together

using directions in

Ch 4 Installation

H. c

onnectIonS

3. Tighten the bolts properly. See

Table D, Bolt

Torque Values for Powell Low Voltage

Metal-Enclosed Switchgear.

Summary of Contents for LVSWGR-AR

Page 1: ...01 4IB 26263B Low Voltage Arc Resistant Switchgear Equipped with Magnum DS Circuit Breakers Powered by Safety ...

Page 2: ...witchgear LVSWGR AR Equipped with Magnum DS Circuit Breakers 01 4IB 26263B Contact Information Powell Electrical Systems Inc powellind com info powellind com Service Division PO Box 12818 Houston Texas 77217 2818 Tel 713 944 6900 Fax 713 948 4569 ...

Page 3: ...ut the safety alert symbol is used to address practices not related to personal injury CAUTION NOTICE NOTICE is used to address practices not related to personal injury Qualified Person For the purposes of this manual a qualified person as stated in NFPA 70E is one who has skills and knowledge related to the construction and operation of the electrical equipment and installations and has received ...

Page 4: ...Powered by Safety Low Voltage Arc Resistant Switchgear LVSWGR AR Equipped with Magnum DS Circuit Breakers 01 4IB 26263B This page is intentionally left blank ...

Page 5: ...eneral 10 B Receiving 10 C Handling 10 1 Lifting the Switchgear 11 D Storage 11 E Positioning the Metal Enclosed Switchgear 12 1 Drawings and Diagrams 12 F Preparation of Floor Anchoring for Indoor Metal Enclosed Switchgear 13 G Grounding 17 H Connections 17 I Main Bus Assembly Insulation 18 1 Applying PVC Boots 19 2 Cleaning Bus Insulation 19 J Power Cables 19 K Control Cables 20 L Inserting and ...

Page 6: ...s 23 1 Equipment 24 2 Bus Insulation 24 3 Mechanisms 24 4 Primary Disconnect Device Contacts 24 5 Control Contacts 25 6 Secondary Wiring 25 7 Mechanical Parts 25 8 Ventilation 25 9 Battery and Charging Equipment 25 10 Hardware 25 11 Heaters 25 12 Breaker Maintenance Cover 26 13 Records 26 C Abnormal Conditions 27 Ch 6 Replacement Parts 28 A Ordering Instructions 28 B Recommended Renewal Parts 28 ...

Page 7: ... Removing the Circuit Breaker from the Switchgear 9 Figure 3 Switchgear on Lifting Crane 11 Figure 4 Chain Cable Sling Installation 14 Figure 5 Base View 15 Figure 6 Side View 16 Figure 7 Ground Bus Splice Bolt Assembly 18 Figure 8 Main Bus Splice 21 Figure 9 Plenum Vent 22 Figure 10 Arc Flash Preventers 22 ...

Page 8: ... Powered by Safety iv Tables Table A Powell Low Voltage Arc Resistant Switchgear Ratings Type 2B 7 Table B Magnum DS Circuit Breaker Ratings 7 Table C Low Voltage Arc Resistant Switchgear Dimensions 16 Table D Bolt Torque Values for Powell Low Voltage Metal Enclosed Switchgear 19 Table E Accessories 29 ...

Page 9: ... servicing maintenance or any act requiring the operator to make physical contact with the equipment the power source must be disconnected and the equipment grounded Failure to do so may result in death or serious injury NOTICE The information in this instruction bulletin is not intended to explain all details or variations of the Powell equipment nor to provide for every possible contingency or h...

Page 10: ...e switchgear 4 Information for ordering renewal parts 5 Illustrations photographs and description of the switchgear Refer to the Eaton publication shipped with the device for circuit breaker information The illustrations contained in this document may not represent the exact construction details of each particular type of switchgear section The illustrations in this document are provided as genera...

Page 11: ...nt and test instruments intended for use on electrical systems 1000 V and below 6 Where the possibility of induced voltages or stored electrical energy exists ground the phase conductors or circuit parts before touching them Where it could be reasonably anticipated that the conductors or circuit parts being deenergized could contact other exposed energized conductors or circuit parts apply ground ...

Page 12: ...including excessive dust ash corrosive atmosphere vermin and insect infestations D Specific 1 DO NOT WORK ON ENERGIZED SWITCHGEAR If work must be performed on the switchgear remove it from service and place it in an electrically safe condition 2 DO NOT WORK ON THE SWITCHGEAR WITH THE CONTROL CIRCUIT ENERGIZED 3 EXTREME CARE MUST BE EXERCISED TO KEEP ALL PERSONNEL TOOLS AND OTHER OBJECTS CLEAR OF M...

Page 13: ...AUTION and instruction labels attached to various locations All equipment DANGER WARNING CAUTION and instruction labels shall be observed when the circuit breaker is handled operated or maintained Warning and Caution labels are located in various places Do not remove or deface any of these warning caution labels NOTICE ...

Page 14: ... switchgear sections consist of full depth structural frames and components providing separate compartments for circuit breakers buses cable and auxiliary components The section main bus and intersection bus is isolated from the cable compartments Powell low voltage arc resistant switchgear for Magnum DS LVPCB circuit breakers consists of multiple sections fastened together as a single group Figur...

Page 15: ...reaker Type Interrupting Class kA rms sym 1 Short Time 0 5s kA rms sym 1 254Vac 508Vac 635Vac 800 MDS 408 42 42 42 42 MDS 608 65 65 65 65 MDS 808 85 85 85 85 1200 MDS 612 65 65 65 65 MDS 812 85 85 85 85 1600 MDS 616 65 65 65 65 MDS 816 85 85 85 85 2000 MDS 620 65 65 65 65 MDS 820 85 85 85 85 2500 MDS 625 65 65 65 65 MDS 825 85 85 85 85 3000 MDS 630 65 65 65 65 MDS 830 85 85 85 85 3200 MDS 632 65 6...

Page 16: ...Powered by Safety 8 Equipment Description Low Voltage Arc Resistant Switchgear LVSWGR AR Equipped with Magnum DS Circuit Breakers 01 4IB 26263B Figure 1 Powell Low Voltage Arc Resistant Switchgear ...

Page 17: ...eaker g Circuit Breaker Compartment a d f b c e g The arc resistant rating is only valid when all doors are closed and properly latched or bolted and components are installed and working properly In addition removal of any breaker from its compartment without reinstalling a breaker maintenance cover will void the arc resistant rating DANGER Note Breaker maintenance covers for compartments not equi...

Page 18: ...s fabricated in rigid floor mounted self supporting steel vertical sections The switchgear vertical sections are shipped in an upright position and when received should be kept upright When the switchgear is received check for signs of damage If damage is found or suspected file claims as soon as possible with the transportation company and notify the nearest Powell representative Refer to the ins...

Page 19: ... 3 Switchgear on Lifting Crane D Storage Shipping and storage of electrical equipment requires measures to prevent the deterioration of the apparatus over a long unused period The mechanical and dielectric integrity must be protected Electrical equipment is designed for use in a variety of environments When the equipment is in transit and storage these design considerations are not fully functiona...

Page 20: ...l drawings and Bill of Materials furnished by Powell for the particular order The drawings include arrangement drawings and wiring and schematic diagrams The recommended aisle space for the front and at the rear of the metal enclosed switchgear is shown on the floor plan drawing furnished for the particular order The space at the front must be sufficient to permit insertion withdrawal and transfer...

Page 21: ...e and flat foundation that has a uniform slope of no more than 1 8 inch in three feet The switchgear units must be placed on the floor channels in such a manner that the base of each unit rests directly on each of the floor channels The floor channels should have a minimum web dimension of 4 inches The required quantity and location of the floor channels is shown on the drawings furnished with the...

Page 22: ...ety 14 Installation Low Voltage Arc Resistant Switchgear LVSWGR AR Equipped with Magnum DS Circuit Breakers 01 4IB 26263B Figure 4 Chain Cable Sling Installation 45 45 1 45 45 1 2 45 45 1 2 3 Minimum Minimum Minimum ...

Page 23: ...ngent on the frame size It has no bearing on the equipment depth and will be one of two dimensions shown in Table C Low Voltage Arc Resistant Switchgear Dimensions C Cable Space Width 4 105 4 105 4 280 46 375 72 716 Cable Entry A C B D Front Compartment E 6x 75 x 562 Obr Holes for Anchor Bolts Depth C Width ...

Page 24: ... C Cable Space in mm D Equipment Width in mm E Front Compartment Depth in mm Width Depth 75 16 1909 06 27 42 696 47 21 96 557 78 or 31 96 811 78 24 34 618 24 24 609 6 or 34 863 6 47 75 1212 85 81 16 2061 46 33 42 848 87 30 34 770 64 24 609 6 or 34 863 6 47 75 1212 85 87 16 2213 86 39 42 1001 27 36 34 923 04 24 609 6 or 34 863 6 47 75 1212 85 93 16 2366 26 45 42 1153 67 42 34 1075 44 24 609 6 or 34...

Page 25: ...re ground potential It is recommended that the connection to the station ground have a cross section of 500 000 circular mils 240mm2 or greater if the soil in which it is buried is of such character as to cause appreciable corrosion This is especially true where electrolysis from stray currents or contact with dissimilar metals exists The resistance of the soil surrounding a station ground depends...

Page 26: ... are made to metal enclosed switchgear bus by bars The metal enclosed switchgear bars are normally silver plated Unplated bars either copper or aluminum should not be used to connect to plated bars 4 All field assembled primary conductor joints and terminations must be insulated before the operating voltage is applied Note All hardware must be tightened to the torque values listed in Table D Bolt ...

Page 27: ...isopropyl alcohol to clean the insulation Wear protective gloves and goggles and clean the main bus bar in a well ventilated area Vacuum and wipe dirt or other foreign matter from the insulation with a clean cloth saturated with only denatured or isopropyl alcohol Use alcohol in a well ventilated area to avoid inhaling vapors CAUTION Do not use any commercial soap based or detergent based cleaner ...

Page 28: ... for free movement These checks should be made with all circuits deenergized CAUTION Refer to the Eaton publication shipped with the device for all installation and removal procedures M Inspection and Testing For assistance with testing and inspection contact the Powell Service Division at 1 800 480 7273 or email at info powellservice com After the equipment has been installed and all connections ...

Page 29: ...nnel Type Main Bus Connection a b c d e f g i h a Channel Splice Upper b Main Bus Splice c Main Riser Bus Connection d Nut Plate Inner Copper with 1 2 Press Nut e 1 2 Flat Washer f 1 2 Split Ring Lock Washer g 1 2 13 x 2 Grade 5 Hex Head Bolt h Channel Splice Lower i Outer Splice Plate ...

Page 30: ...en position as shown before equipment is energized 2 Testing The following tests shall be completed before placing the switchgear into operation a A megger test shall be made to ensure all connections made in the field are free of undesirable grounds b A dielectric test shall be made on the high voltage circuit for one minute at the appropriate test voltage Voltage transformers CPTs and surge arre...

Page 31: ...n the condition of the switchgear When performing maintenance the power source must be disconnected and the equipment grounded Failure to do so may result in death or serious injury WARNING The primary circuits of metal enclosed switchgear are insulated in order to reduce the size of the equipment However this insulation in most instances requires a certain amount of air gap between phases and to ...

Page 32: ...electric and mechanical properties Clean the insulation to provide optimum insulation properties Only use denatured alcohol or isopropyl alcohol to clean the insulation Wear protective gloves and goggles and clean the main bus bar in a well ventilated area Wipe dirt or other foreign matter from the insulation with a clean cloth saturated with only denatured or isopropyl alcohol Inhalation of vapor...

Page 33: ... obstructions and accumulations of dirt The air space around the switchgear which is necessary for the entrance of ventilating air should be cleaned of possible debris 9 Battery and Charging Equipment The control battery is such an important accessary to the switchgear operation that it must be given special periodic attention if it is to have a long life of reliable service Periodic inspections a...

Page 34: ...s The condition of each switchgear unit at the time of inspection should be listed in a permanent record to become a guide for anticipating the need for replacements or for special attention between the regularly maintenance periods Insulation resistance tests are suggested for checking the insulation A series of these tests will indicate any tendency toward a reduction in dielectric strength of t...

Page 35: ...ule can be established to maintain the equipment in a satisfactory condition If maintenance and inspection frequency in abnormal conditions interferes with operating and production schedules consideration should be given to placing the equipment in a relatively tight room Clean air can be pumped into the room to create positive air pressure and decrease exposure of the equipment to abnormal condit...

Page 36: ...ed joints of conductors must be SAE Grade 5 or better to ensure proper clamping torque and to prevent the joints from overheating The hardware should be plated to deter corrosion B Recommended Renewal Parts A sufficient amount of renewal parts should be stored to enable the prompt replacement of any worn broken or damaged part A sufficient amount of stocked parts minimizes service interruptions ca...

Page 37: ...000A Circuit Breaker Escutcheon Retainer Seals 26263P00001036 26263P00001037 AR Door Latch Rods 26263P00000519 Cam 1000 U140 T Handle 1000 U546 Door Frame Seal 1011 05 Breaker Maintenance Cover 800A 3200A Circuit Breaker 26263G00000052 4000A Circuit Breaker 26263P00001217 PowlVac Lubrication Kit Powlube 104 Notes 1 The numbers in the indicate the number of pieces or the length of cable included 2 ...

Page 38: ...ouston PO Box 12818 Houston TX 77217 Tel 713 944 6900 Fax 713 948 4569 powellind com info powellind com 2006 Powell Industries Inc All rights reserved LVSWGR AR Equipped with Magnum DS Circuit Breakers 01 4IB 26263B Low Voltage Arc Resistant Switchgear September 2015 ...

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