GE BreakMaster Installation And Maintenance Manual Download

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imagination at work

GE Consumer & Industrial

Electrical Distribution

BreakMaster

™

Load

Interrupter Switch

Installation and Maintenance

Summary of Contents for BreakMaster

Page 1: ...imagination at work GE Consumer Industrial Electrical Distribution BreakMaster Load Interrupter Switch Installation and Maintenance ...

Page 2: ...ication 5 Section 4 Installation 6 4 0 Joining BreakMaster Enclosures 4 1 Connection of Switchgear to Transformer 4 2 Bolting Torque Valves 4 3 Electrical Clearances 4 4 Grounding 4 5 Medium Voltage Electrical Connections 4 6 Connection to Metal Clad Switchgear Assembly 4 7 Connection of Customer Power Cables 4 8 Field Taping of Electrical Connections 4 9 Securing Switchgear to Foundation 4 10 Con...

Page 3: ...ratings for the switch and switchgear 1 2 Safety Features GE s BreakMaster Load Interrupter Switch meets or exceeds all of the following standards GE s BreakMaster Load Interrupter Switch has several built in features to reduce hazards and to provide proper operating sequences 1 Door interlock prevents opening the enclosure front doors while the switch is in the closed position 2 Switch interlock ...

Page 4: ...ing the door use viewing window to insure that all three switch blades are open If necessary use a flashlight to verify 3 Never energize the switch without the arc chutes and barriers installed 4 Always be sure that all hardware is in place and bolted tightly before putting switch into operation 5 Before replacing covers carefully inspect buswork and phase barriers to insure that no tools or other...

Page 5: ...ecommended method of moving the BreakMaster structure Extreme care should be used not to damage or deform the unit if other moving methods are employed 2 2 Storage If it is necessary to store the equipment before installation keep it in a clean dry location with ample air circulation and heat to prevent condensation Like all electrical apparatus these units contain insulation that must be protecte...

Page 6: ... Highly Visible Warning SIgn Lower Door Oversize Inspection Window Safety Mechanical Interlock Lower Fuse Compartment Ground Bus Data Label Key Interlock when required Data Label Glass Polyester Insulators Porcelain Available as an option Full Height Phase Barrier Large Cable Pulling Space Ground Bus Copper Bus Standard Switch Mechanism Rigid Bolted Frame Construction Heavy duty Chain Drive All Co...

Page 7: ... sections consists of 2 bolted connections on the top and bottom of each depth frame member In addition 2 bolted connections are made on each vertical frame member The vertical connections are located 1 3 and 2 3 up from the bottom of the BreakMaster Load Interrupter Switch if 90 high switch then connections are made at 30 and 60 off the ground Make any main and ground bus connections using splice...

Page 8: ...ion ground can be made in any unit A ground bus is included in each section for connecting the BreakMaster equipment to the station ground 4 5 Medium Voltage Electrical Connections 4 5 1 Connection by Cable Supplied with BreakMaster Switch a Cables are not factory pre cut to proper length Installer must cut to fit b Since factory cables are unshielded they must be properly separated from each othe...

Page 9: ...or acceptance of copper or aluminum cable If potheads or other special terminations are supplied termination should be made according to the terminator manufactur er s instructions 4 7 1 Installation Procedure for Main Cables when Cable Brace is Provided Align conduit holes in a linear orientation directly over or as close as possible to the braces Consideration should be given to installing condu...

Page 10: ...trol devices heaters will be internally wired and brought to a terminal block A wiring diagram will be furnished with the drawings showing connection points for power 4 11 Switch Inspection Before Setup The following procedure should be performed to insure proper operation of the switch Open and close the switch 2 5 times in succession Do not attempt to grind the blades with powdered emery or othe...

Page 11: ...Continue to pull outward until arcing blade disengages from the arc chute See Figure 6 If the main blades do not align with the jaw contacts loosen the hinge casting mounting bolts and move the pole assembly Then re tighten the bolts See Figure 7 Figure 5 Figure 6 Figure 7 DANGER Make sure that all power sources are deenergized before attempting any maintenance WARNING The arcing blade is under sp...

Page 12: ...te If necessary adjust the jaw casting by loosening the mounting bolts and lightly tapping the arc chute mounting bracket Re tighten the bolts See Figure 9 If any corrections in the arcing blade position are necessary after all previous steps have been completed loosen the locknut on the arcing blade adjusting screw see Figure 10 and turn the screw either in or out to obtain positioning of arc ing...

Page 13: ...ustment Close each switch pole and connect a spring scale as described in Step 4 A force of 30 36 pounds should be necessary to open the switch blades Loosen or tighten the jaw contact bolts as necessary to meet the 30 36 pound require ment See Figures 11 12 and 13 for spring scale placement Pull 30 to 36 pounds Scale 50 pound range Aluminum Bar Scale Hook Switch Blades 600A Switches Figure 11 Fig...

Page 14: ...that all power sources are deenergized before attempting any maintenance 5 0 1 Switch Interlock This interlock prevents inadvertent closure of switch if the enclosure door is open When the door is closed the push rod is depressed by the door to move the safety latch out of the blocking position See Figure 14 Figure 14 Door operated pushrod 5 0 2 Door Interlock This interlock prevents the door of t...

Page 15: ... these forces are not transmitted to the operating handle since it is not rigidly connected to the blades Therefore the switch can be safely closed under short circuit conditions within its fault close rating Load interruption is accomplished by a flicker blade and engaging contact fingers located inside an arc chute On opening the switch the main blades open first and all current is shunted throu...

Page 16: ...e if voltage is present An example would be TIC brand TIF320HV 5 If no voltage is present a suitable grounding device should be attached to the fuse terminals to discharge any static charge and assure that the fuse terminals remain at ground potential 6 Remove fuse by pulling fuse forward until it is clear of the fuse clips Install new fuse by inserting it into the fuse clips Make sure the clips f...

Page 17: ...e contact GE prior to beginning this procedure The sequence of operation as outlined in this instruction book is based on a Typical motor operated drive assembly Based on particular application requirements there may be internal control modifications not shown in the typical operation sequence The terminal designations for the major components such as the microswitches motor reversing contactor et...

Page 18: ... Clutch and Spring Mechanism Coupled to the Drive Motor CL SP 6 Load Interrupter Switch Auxiliary Cam Switch Chain Driven Normally Open 89 OP Normally Closed 89 CL See Kinematic Diagram Figure 18 When the main interrupter 89 is signaled to operate close the 89X coil Figure 19 is energized closing all of its contacts and mechanically blocking 89Y from being energized Solenoid SOL is then energized ...

Page 19: ...tor A 2 De energize solenoid SOL 3 Set up Load Interrupter Switch opening circuits De energizing solenoid SOL releases compressed springs SP energy to disengage the clutch CL Disengagement of the clutch is to prevent the motor armature inertia from overdriving the Load Interrupter Switch drive shaft and causing mechanical damage To open the Load Interrupter Switch apply a signal to the 89Y coil Th...

Page 20: ...CL closes to set up the next closing operation All as described above Adjustments 1 Wiring Harness Inspection Refer to the Wiring Diagram and Schematic shipped with the equipment Trace out all inter wiring connections to ensure conformity with the diagram and understanding of all remote interconnect requirements 2 Deactivate the Direct Drive Solenoid Coupler Assembly Disconnect the coil wiring on ...

Page 21: ...out interlock jumper at Terminals M3 and M4 Reconnect the coil wiring at the solenoid Then remove and store the manual handle Now you will be ready to activate the motor drive through remote devices If you find the motor operator cutting off prior to the spring mechanism discharging in the intended direction adjust the particular cam and microswitch position so as to let the motor operator drive f...

Page 22: ...jaw contact as previously described If force is above 30 36 pounds see alignment procedure 4 11 1 DANGER Make sure that all power sources are deenergized before attempting any maintenance BreakMaster Load Interrupter Switch Inspection and Maintenance Operating Mechanism Inspection Item Criteria Inspection Method Corrective Action if necessary Motor 5000 operations Check condition Replace brushes T...

Page 23: ...gnized from the recorded readings At recording time the record should include the temperature the humidity and the date 6 0 7 Chain Drive The chain drive assembly connects the stored energy mechanism to the operating handle on the front of the housing It consists of a length of roller type chain fastened in a loop by two adjustable turnbuckles with locking nuts Make sure turnbuckles and locking nu...

Page 24: ...y be closed at a time to prevent paralleling of incoming lines b Both switches must be locked in the open position to unlock either main door preventing access to energized load side bus or fuses WARNING Only one key should be available to operating personnel for this interlock scheme When shipped from the factory each lock will have a separate key All extra keys must be destroyed or otherwise mad...

Page 25: ...r switch and Reset push button to show the status of and to control ATS manually As standard this arrangement is supplied with key interlocking for safe operation Key interlocking normally consists of a lock on each switch and a lock on each door Each of the locks is keyed alike and only one key should be available to operating personnel Since the key is retained in its lock when a switch is close...

Page 26: ...OL Timer start Emergency Source Not Available Nothing Happens STOP Emergency Source Available S1 S2 SOL timer starts Normal Source S1 Switch Open No No Yes Emergency Switch stays as is END Yes Emergency Switch Close Is Normal Source S1 available Emergency Switch Open Normal Switch Close When Normal Source returns W Time Delay to open Normal Source to ensure voltage and frequency stabilization of E...

Page 27: ...ing Overheating adequate current carrying capacity conductors or by replacing with heavier conductors Contacts Burned or Pitted Contacts should be dressed and fitted properly See Section 4 11 1 Bolts and Nuts of Tighten all bolts and nuts Do not exceed torque as Connections not tight per Section 4 2 by more or less than 10 percent Over tightening bolts may cause bolts to exceed their elastic limit...

Page 28: ...Products Catalog Buylog Catalog and Control Catalog There is no charge for calling GE RESOLVE Access is included with every order courtesy of GE Electrical Distribution If you need to contact us call 1 888 GE RESOLVE 1 888 437 3765 8 00 A M 5 00P M EST Monday Friday An answering service is on duty evenings weekends and holidays to take your message for prompt action the next business morning Emerg...

Page 29: ...llation operation or maintenance Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser s purposes the matter should be referred to GE Company imagination at work GE Consumer Industrial 41 Woodford Avenue Plainville CT 06062 www geelectrical com 2007 General Electric Company DEH 40291A 12 07 ...

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GE BreakMaster, Installation And Maintenance Manual

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