Toshiba HV6AS Vacuum Cleaner User Manual
Contents
1. a Optional Auxiliary Contacts Connect Wires Directly To Auxiliary Switch Terminals NT3 Components Inside Dashed Box Located On Control Circuit Board H K N2 C4 coa Terminal Layout As Viewed From Front of Circuit Breaker Circuit Breaker Components Shown Inside Box 16 15 14 13 12 11 o o o ooo Y LS1 a 125 VDC 120 VAC aoe SUPPLY SUPPLY Y b R4 i R2 R3 e gt gt 02 01 02 01 SA Vl m a NN Optional Auxiliary Contacts A Connect Wires Directly To Auxiliary Switch Terminals NT3 Components Inside Dashed Box Located On Control Circuit Board PR3 NT3 H K N2 C4 coa Terminal Layout As Viewed From Front of Circuit Breaker Page 24 OPERATION UNDERVOLTAGE TRIP All HV6AS fixed mounted circuit breakers are furnished with an undervoltage trip device The undervoltage trip device operates to trip the circuit breaker OFF unless 120VAC control power is present at the terminals of relay UV When the circuit breakers are shipped the undervoltage trip device is defeated by a factory installed plug Fig 32 If t2. GF07Z301 MFG DATE 7 98 TOSHIBA INTERNATIONAL CORPORATION HOUSTON TEXAS U S A PARTS amp WIRING SEE INSTRUCTIONS SER No 98700221 Page 12 INSTALLATION MOUNTING THE CIRCUIT BREAKER TO A Fig 10 Align Breaker With Panel Cutout PANEL The circuit breakers are designed to mount to a panel made from 11 ga 12 in thick steel If the breaker must be mounted to a panel of different thickness contact Toshiba Panel cutout dimensions for the circuit breakers are given in Fig 12 One cutout size is used for all breaker types To mount the circuit breaker follow the steps below 1 Loosen the small screw M5 on the closing handle and remove the handle 2 Remove the four front plate mounting bolts M8 from the circuit breaker Fig 9 Remove the spacer washers between the front plate and breaker and discard them make sure none are left inside the breaker 3 Align the breaker with the cutout and mounting holes on the panel to which it is to be mounted Fig 10 Some breakers are furnished with two hooks which may be used to temporarily attach the breaker to the panel 4 Using the four M8 bolts removed in step 2 fasten the breaker and its front plate to the mounting panel Fig 11 The tightening torque should be 120 150 kgf cm 9 11 ft Ib 5 Replace the closing handle removed in step 1 and the M5 screw The screw should be tightened to a torque of 40 50 kgf cm
3. A abet tpa doe an Knit tu 11 Mounting the Circuit Breaker to 22222224 0 1 12 M nting Directly to s rh pde lese te tb eus 14 Main Circuit Cable Connections sansin ae a ae a Aae A eese 15 Ground Connections 5 eos ro ie ret lt evi ey EER EREE EE E E E el 16 Control Circuit iConnections 2 ree 17 Additional Auxiliary Switch RR des Denk 17 PRE ENERGIZATION CHECK ret c ea d e htl tl Ub et 18 eur 18 Electrical Checks eet bine 18 OPERATION o e 19 Manual Operation osassa aca der eee ies ANA Kana oet ee ad 19 Electrical Operation eere he Een HI EA LAAN AA PA Ka e RE DURS 19 Undervoltage To t 24 nolo Ut Dodo but abr pate Saana ut a E cts ease 25 MuETRciiae aro rem 25 Maintenance Record onnaa anna naan nennen enhn enn nen nanna nannaa nananana annan nananana 25 Servicing 0 2222424 2 252 0000000000 0000000 25 Inspection and Maintenance 26 Table Tightening eb tone eid ER
4. ACAUTION To avoid damaging the mechanism do not close the circuit breaker when the On Off Indicator shows ON red MANUAL CLOSING Motor Operated MU and ML Types 1 Check to make sure that the On Off indicator shows OFF green 2 Attach the closing handle to the breaker if it is not already attached Fig 24 Manually Closing Breaker 3 If the closing spring status indicator shows DISCHARGED white Turn the closing handle clockwise Fig 23 The breaker will close On Off indicator i changes to ON after the handle is turned approximately 75 Fig 24 NOTE If the handle is turned in small increments the closing spring will store the energy from the handle action and the circuit breaker will close before 75 of rotation If the closing spring status indicator shows CHARGED yellow Turn the closing handle clockwise The breaker will close after the handle is turned approximately 10 4 Release the handle and it will return to its initial position Page 20 OPERATION Fig 25 Manually Opening Breaker MANUAL CLOSING Manual Spring Operated U and L Types SYMBOL DESCRIPTION 1 Check to make sure that the On Off indicator shows OFF green 2 Turn the closing handle clockwise The breaker will close On Off indicator changes to ON after the handle is turned approximately 75 NOTE If the handle is turned in small increments the closing spring will
5. Spring Status Indicator Changes to White and On Off Status Changes to ON Auxiliary Relay Closes Anti Pumping Circuit Completed Next Close Operation is Not Possible Unless Close Signal is Canceled Opening Signal Given Trip Coil Energized Circuit Breaker Opens On Off Status Indicator Changes to OFF Fig 27 Electrical Operation Flow Chart for MU and ML Type Breakers Page 22 OPERATION Circuit Breaker Components Shown Inside Box 16 15 14 13 12 11 00000 125 VDC 120 VAC SUPPLY SUPPLY 25 24 23 22 21 26 25 24 23 22 21 e Optional Auxiliary Contacts K 2 C4 C04 Terminal Layout As Viewed From Front of Circuit Breaker Fig 28 125 VDC Control Circuit Schematic for U Type Circuit Breaker Circuit Breaker Components Shown Inside Box 16 15 14 13 12 11 125 VDC 120 VAC SUPPLY SUPPLY 02 A01 B02 B01 26 25 24 23 22 21 N g e ej Optional Auxiliary Contacts K N2 C4 2 A02 B1 Terminal Layout As Viewed From Front of Circuit Breaker OPERATION Page 23 Circuit Breaker Components Shown Inside Box 16 15 14 13 12 11 0 0 0 5 50 125VDC 120 VAC SUPPLY SUPPLY
6. Reports of any testing 3 Equipment condition 4 Corrective actions or adjustments 5 Date of work 6 Comments The degree of detail of the record will depend somewhat on the operating conditions SERVICING EQUIPMENT For your safety turn off and lock out main and control circuit power before servicing the circuit breaker Certain minimum safety procedures must be followed 1 Only qualified personnel should attempt this service 2 Never perform service on or next to exposed components energized with line voltage Failure to adhere to these safety procedures can result in severe injury death and property damage AWARNING 26 RECOMMENDED INSPECTION AND MAINTENANCE TYPES NOTE Refer to the SAFETY section of this manual for important information A Acceptance Inspection This inspection confirms that the circuit breaker unit is complete correct as specified and undamaged from shipment procedure for this inspection is outlined in the RECEIVING INSPECTION AND HANDLING section of this manual B Patrol Inspection Inspection is made of the condition of the circuit breaker while it is energized Check that no unusual sounds or smells exist externally Inspection Frequency Once every 6 months C Periodic Inspection Inspection is performed wth the circuit breaker de energized The lubrication of sliding and rotating parts is checked and the mechanism is lubricated if needed
7. conditions Excessive dust Corrosive gases Extreme variations in temperature Very high or low humidity Vibrations Inclined locations If there is a chance that condensation can occur Fig 8 Typical Circuit Breaker Nameplate at the installation location a space heater should be installed inside the circuit breaker enclosure NOTE Temperature altitude other conditions outside of the usual limits may require derating or other special equipment Contact your nearest Toshiba representative for additional information RATING VERIFICATION Prior to Installation the maximum fault current capacity of the power system at the point of installation should be verified This value must not exceed the symmetrical interrupting capability of the circuit breaker Fig 8 illustrates a typical circuit breaker nameplate Do not exceed the ratings specified on the circuit breaker nameplate or system accessories Underrated equipment can fail during operation causing fire explosion severe injury death and property damage ADANGER TOSHIBA VACUUM CIRCUIT BREAKER TYPE HV6AS MU VV RATED VOLTAGE 7 2 4 8 kV RMS SHORT AMPS FREQUENCY 50 60 Hz INTERRUPTING TIME 3 CYCLES CONTINUOUS AMPS 630A RMS CLOSE VOLTS 120 VAC 125 VDC IMPULSE LEVEL 60 kV CREST SHUNT TRIP VOLTS 125 VDC DIELECTRIC 22kV AC RMS UVTRIPVOLTS 120 VAC WEIGHT 24 kg 53 Ibs MFG STANDARD JIS C 4603 1990 JEC 2300 1985 14 16 kA RMS
8. operation period SPECIFICATIONS Page 33 Table 3 Circuit Breaker Ratings Manual Operation HV6AS U and HV6AS L Types Rated Voltage kV rms 7 2 4 8 Rated Low Frequency Withstand Voltage kV rms 22 Impulse Withstand Voltage kV crest 60 Rated Continuous Current A rms 630 Rated Frequency Hz 50 60 Rated Short Circuit Breaking Current kA rms 14 16 Rated Short Circuit Making Current kA crest 35 40 Rated Short Time Withstand Current 2 sec kA rms 12 5 Rated Interrupting Time 60Hz Basis cycles 3 Opening Time msec 8 25 Rated Control Voltage Opening V DC 30 125 Rated Control Voltage Undervoltage Trip V AC 120 Operating Duty O 1 min CO 3 min CO Auxiliary Contacts 2 N O 2N C Weight kg 22 U 25 L Table 4 Circuit Breaker Ratings Motor Stored Energy Operation HV6AS MU HV6AS ML Types Rated Voltage kV rms 7 2 4 8 Rated Low Frequency Withstand Voltage kV rms 22 Impulse Withstand Voltage kV crest 60 Rated Continuous Current A rms 630 Rated Frequency Hz 50 60 Rated Short Circuit Breaking Current kA rms 14 16 Rated Short Circuit Making Current kA crest 35 40 Rated Short Time Withstand Current 2 sec kA rms 12 5 Rated Interrupting Time 60Hz Basis cycles 3 Opening Time msec 8 25 Closing Time msec 150 300 Charging Time sec 1 5 3 Rated Control Voltage Closing Chargin
9. store the energy from the handle action and the circuit breaker will close before 75 of rotation 3 Release the handle and it will return to its initial position MANUAL OPENING All Types M Motor TC Voltage Trip Coil 1 Push the trip lever in the direction of the UV Undervoltage Trip Coil arrow Fig 25 a1 to a6 Auxiliary Contacts N O b1 to b6 Auxiliary Contacts N C T X Control Rela 2 The On Off indicator changes to OFF Relay green X b Control Relay Contact N C Y Auxiliary Relay ELECTRICAL OPERATION Y a Auxiliary Relay Contact N O Y b Auxiliary Relay Contact N C The flow chart shown in Fig 27 illustrates the 51 0153 Limit Switches sequence of electrical operation of the MU and R1toR4 Resistors ML type circuit breakers REC Rectifier D Diode Refer to Fig 26 and the circuit breaker e Capacitor schematics shown in Fig 28 through Fig 31 for SP Surge Protector determining external control circuit connections RL Red Lamp to the circuit breaker GL Green Lamp Fig 26 Legend for Schematics OPERATION Page 21 Circuit Breaker Open Control Power Applied Motor Begins Operating Closing Springs Begin Charging T Closing Springs Charged Spring Status Indicator Changes to Yellow Motor Stops Standby for Close Operation Closing Signal Given Motor Begins Operating Circuit Breaker Closes
10. 26 Table 2 Check Points for Periodic Inspection 27 Vacuum CHECK wav cmt tur tette tee Con cack hap vt HOS DER TERRE Ra 29 DISPOSALE focos ricis A ma ee Ep 31 STORAGE eoe b td assent wea bmc de uad i e 32 Storage 32 TABLE OF CONTENTS Page 5 Inspection D ring storage cce ORE h dani ERE eine 32 SPECIFICATIONS ban PRX R PAR ea Rt Geta cru RE PENA 33 Table 3 Ratings Manual Operation HV6AS U and HV6AS L 33 Table 4 Ratings Motor Operation HV6AS MU and HV6AS MU 33 WARRANTY AND LIMITATION OF 20042221 34 Page 6 INTRODUCTION It is the intent of this manual to provide a guide for safely installing operating and maintaining Toshiba vacuum circuit breakers This manual consists of a section of general safety instructions and is marked throughout with warning symbols Read this manual thoroughly before installation operation and maintenance of this equipment This manual and all accompanying drawings should be considered a permanent part of the equipment They should be readily available for review and reference at all times This manua
11. 35 43 in Ib TOSHIBA Fig 9 Remove Front Plate and Spacer Washers INSTALLATION Page 13 0 343 DIA 4 PLACES 0 38 RADIUS 4 PLACES Dimensions in Inches Fig 12 Panel Cutout Dimensions Page 14 INSTALLATION MOUNTING DIRECTLY TO A SHELF The shelf should be flat and level within 0 5 mm 0 02 in If there are any noticeable gaps between the breaker and the shelf fill them in using flat washers as spacers Check to make sure the breaker On Off indicator shows OFF green then mount it by following the steps below 1 Fasten the breaker onto steel angles or to a flat plate Fig 13 Use M8 hex head bolts either 50 mm 35 mm The tightening torque should be 120 150 kgf cm 9 11 ft Ib 2 Either mounting method shown in Fig 14 may be used Fig 13 Mounting Breaker to Flat Plate or Angles ANGLE b M8 x 35MM OR M8 x 50MM BOLT Fig 14 Optional Hardware Orientation INSTALLATION Page 15 Fig 15 Pass Cable Through Insulating MAIN CIRCUIT CABLE CONNECTIONS Cables which connect to the circuit breaker should be routed to avoid interference with sharp edges and moving parts Minimum bending radius for the type of cable used should be observed Power cables should be braced and or laced to withstand short circuit forces wherever such cables are unsupported Power cables should be adequately sized to carry the maximum continu
12. claim with the carrier for any damaged or missing items and immediately notify the nearest Toshiba representative Do not install or energize equipment that has been AWARNING damaged Damaged equipment can fail during operation resulting in fire and explosion Page 10 RECEIVING INSPECTION AND HANDLING HANDLING AND MOVING When handling and moving the circuit breaker the techniques shown in this section may be used Care and caution should be used when handling the circuit breaker units to avoid damage to the equipment and personal injury Always keep the circuit breaker in a generally upright position Refer to Fig 6 and Fig 7 for the correct methods of lifting and moving the circuit breakers MU Type Circuit Breakers Fig 7 Correct Method for Handling the L and ML Type Circuit Breakers INSTALLATION Page 11 Do not install this equipment in areas where unusual service conditions exist Using this equipment in other than usual service conditions can result in equipment failure AWARNING Toshiba HV6AS circuit breakers are intended for use in usual service conditions as defined in IEEE C37 20 2 The temperature of the cooling air ambient air temperature surrounding the breaker should be between the limits of 5 C 23 F and 40 C 104 F The altitude of the equipment installation should not exceed 3300 ft 1000 m In particular avoid the following installation
13. of the vacuum checker or AC hi pot machine Increase the voltage from zero to 22kV AC at a rate of approximately 2kV per second Hold the voltage at this value for 1 minute and observe the current drawn by the interrupter Decrease the voltage back to zero Fig 34 Toshiba Portable Vacuum Checker 30 MAINTENANCE CRITERIA 1 If a current flow above 5 milliamperes is observed or if breakdown occurs one or more of the interrupters has_ insufficient vacuum and must be replaced Exception If the current exceeds 5 milliamperes the first time the voltage is brought up reduce the voltage to zero and increase it again It may be necessary to repeat this procedure a few times 2 f the breaker fails to meet criteria 1 then repeat the test on each pole separately to identify the damaged interrupter interrupters 3 If the voltage can be held for 1 minute and the current flow does not exceed 5 milliamperes the interrupter has a sufficient vacuum level After the test is complete discharge any residual static charge from the primary terminals of the circuit breaker If a vacuum checker or AC hi pot tester is not available a DC hi potential test may be conducted If a DC test is conducted the test voltage must be increased to 31kV DC The test duration for DC tests and the criteria for acceptance remain the same as for AC tests Do not use DC hi pot testers which employ unfiltered half wave rec
14. service life has expired STORAGE Provides guidelines for storing new equipment for an extended period of time SPECIFICATIONS Covers ratings and other specifications of the circuit breaker WARRANTY AND LIMITATION OF LIABILITY Details Toshiba International Corporation s standard warranty terms GENERAL DESCRIPTION Page 7 The Toshiba HV6AS vacuum circuit breakers described in this manual are suitable for use on systems of 4 8kV and 7 2kV voltage classes which require interrupting ratings of 16kA 14kA respectively and continuous current rating of 630A The circuit breakers are intended for use in limited applications requiring small physical size and low maintenance These breakers are designed for fixed panel mounting and are available with upper main circuit terminals U MU types or rear terminals L ML types The breakers are available as both manual and motor operated types Motor operated breakers use a motor to charge the closing springs and to close the breaker upon command Both types can be tripped electrically and also include undervoltage release Arc interruption is accomplished inside sealed vacuum interrupters mounted on track resistant insulators Vacuum interrupters use low surge contact materials which exhibit low current chopping levels reducing switching overvoltages Fig 1 and Fig 2 illustrate and identify the major components of the circuit breakers COMPONENTS LEGEND 1 Manual clo
15. HV6AS vacuum circuit breakers are designed and built in accordance with JIS C 4603 1990 and JEC 2300 1985 Installations must comply with all applicable state and local codes adhere to all applicable National Electric Code NFPA 70 standards and instructions provided in this manual SAFETY Page 3 ADANGER HAZARDOUS VOLTAGE will cause severe injury death fire explosion and property damage Turn off and lock out Primary and Control Circuit Power before servicing Keep all panels and covers securely in place Never Defeat Modify or Bypass any Safety Interlocks Qualified Operators only SAFETY EAE EA AT A EAA E T E ETT 1 Page 4 TABLE OF CONTENTS 2 6 GENERAL DESCRIPTION ye ee ua e y Pe pte nce oe drea ades 7 Comnporienlts i ae rp RR DRE ER ERA EM NN EU RENE RN TR RA ER RYE BER EXER VERE XX VR 7 Indicators and 8 RECEIVING INSPECTION AND 022 9 Receiving and Unpacking eio ete oibus Ete ERES EM tiN TK teke kalu Hat NANREN ECan 9 Acceptance Inspection E A E a aa naa a aa aan Aaa naa a nannaa 9 Handling m 10 DOR TN E agre e 11
16. Inspection Frequency Once every 1 3 years or every 3000 operations normal Once every 6 years detailed Refer to Table 2 for the schedule of Periodic Inspections D Unscheduled Inspection Inspections are implemented as required Inspection Frequency As needed NOTE The inspection frequency and points to be inspected may vary from the above recommendations depending on the status of use frequency of switching amount of current interrupted and other factors Table1 Tightening Torques MAINTENANCE Screw Nominal Tightening Torque Dia M4 15 20 kgf cm 13 17 M5 30 40 kgf cm 26 34 in lb 6 50 65 kgf cm 43 56 M8 120 150 kgf cm 9 11 ft lb M10 250 315 kgf cm 18 23 ft lb M12 450 565 kgf cm 32 41 ft lb MAINTENANCE Page 27 Table 2 Check Points for Periodic Inspection Loose bolts nuts or screws Operating Mechanism Dust or foreign matter inside Indicator operation Warpage Smooth operation Discoloration due to heat from conducting parts Main Circuit Loose bolts nuts or screws Dust on surface of vacuum interrupter Insulator Dust foreign matter or damage Make sure all bolts nuts and screws are tight Tighten using screwdriver or wrench The circuit breaker should be clean and contain no foreign matter Visual inspection Make sure the number of operations is correctly
17. TOSHIBA Document GF072301 Rev 1 INSTRUCTION MANUAL INSTALLATION OPERATION MAINTENANCE HV6AS Vacuum Circuit Breakers Fixed Type 4 8 amp 7 2kV Voltage Classes APPLICABLE MODEL NUMBERS Manual Operation Types HV6AS U HV6AS L Motor Operation Types HV6AS MU HV6AS ML Issued 2 2000 Supercedes First Issue Dated 2 99 TOSHIBA INSTRUCTION MANUAL For the Installation Operation and Maintenance of HV6AS Vacuum Circuit Breakers Fixed Type 4 8 amp 7 2kV Voltage Classes Never attempt to install operate maintain or dispose of this equipment until AWARNING you have first read and understood all of the relevent product warnings and user directions that are contained in this Instruction Manual To contact Toshiba address all correspondence to Field Service Department Toshiba International Corporation 13131 West Little York Road Houston Texas 77041 USA or call 713 466 0277 800 231 1412 800 527 1204 Canada Fax 713 466 8773 Please complete the following information for your records and retain with this manual Model Serial Number Date of Installation Inspected by Reference Number TOSHIBA INTERNATIONAL CORPORATION 2000 SAFETY Page 1 IMPORTANT MESSAGES Read this manual and follow its instructions Signal words such as DANGER WARNING and CAUTION will be followed by important safety information that must be carefully reviewed Indicat
18. displayed Visual inspection There should be no warpage or missing parts Visual inspection Manual operation Visual inspection or touch Check lubrication Make sure moving parts operate smoothly Make sure there is no discoloration Visual inspection Tighten using Make sure all bolts nuts wrench and screws are tight Visual inspection Make sure there is no dust on the surface Make sure there is no dust foreign matter or breakage Visual inspection Tighten if loose See Table 1 for tightening torques Wipe with a clean dry cloth Check the cause and repair Check the cause and repair Apply a small amount of lubrication Check the cause and repair Tighten connections to circuit breaker See Table 1 for tightening torques See Table 1 for tightening torques Wipe with a clean dry cloth Wipe with a clean dry cloth If damaged contact Toshiba 28 MAINTENANCE Table 2 Check Points for Inspection cont d Check Point Check Item Check Method What to do Auxiliary Terminals loose Visual Make sure terminals are Repair if Switch or disconnected inspection not loose or disconnected disconnected Tighten using a Tighten if loose screwdriver See Table 1 for tightening torques Case contacts Visual Make sure there is no Replace if damaged inspection damage or warping or warped Control Smooth Energize the Breaker motor
19. e made to the circuit breaker before incoming power is applied AWARNING It is very important that the circuit breaker and its enclosure be adequately grounded to protect the operator from injury in the event of short circuits or other abnormal occurences and to ensure that the metal parts of the equipment other than live parts remain at ground potential For U and MU type circuit breakers the ground terminal is on the left side of the operating mechanism as viewed from the rear of the breaker To make the ground connection first remove the fastening M6 hex head bolt and crimp on terminal provided with the breaker and crimp the terminal to the end of the ground wire Fig 18 Then reattach the terminal using the same bolt previously removed and torque to 50 65 kgf cm 43 56 in Ib For L and ML type circuit breakers the ground terminal is on the left side of the terminal block as viewed from the rear of the breaker Fig 19 The same instructions as for the U and MU breaker above should be followed to attach the ground wire Fig 18 Ground Connection for U and MU Type Breakers Fig 19 Ground Connection for L and ML Type Breakers INSTALLATION Page 17 CONTROL CIRCUIT CONNECTIONS Control circuit wiring is connected to the terminal block on the top of the operating mechanism Fig 20 Connect control wires in accordance with the appropriate wiring diagram shown in Fig 28 through Fig 31 i
20. es a situation which will result in death serious injury and severe ADANGER property damage if you do not follow instructions Means that you might be seriously injured or killed if you do not follow AWARNING instructions Severe property damage might also occur Means that you might be injured if you do not follow instructions Equipment ACAUTION damage might also occur NOTE Gives you helpful information READ SAFETY SIGNS To avoid injury you must read and follow all safety signs Keep the safety signs visible and in good shape Never remove or cover any safety signs 2 SAFETY QUALIFIED OPERATORS ONLY Only qualified persons are to install operate or service this equipment according to all applicable codes and established safety practices A qualified person must Carefully read the entire instruction manual Be skilled in the installation construction or operation of the equipment and aware of the hazards involved Be trained and authorized to safely energize deenergize clear ground lockout and tag circuits in accordance with established safety practices Be trained and authorized to perform the service maintenance or repair of this equipment Be trained in the proper care and use of protective equipment such as rubber gloves hard hat safety glasses face shield flash clothing etc in accordance with established practices Be trained in rendering first aid SAFETY CODES Toshiba
21. g V AC 120 DC 125 Rated Control Voltage Opening V DC 30 125 Rated Control Voltage Undervoltage Trip V AC 120 Operating Duty O 1min CO 3 min CO Auxiliary Contacts 2 2 Weight kg 24 MU Type 27 ML 34 WARRANTY AND LIMITATION OF LIABILITY Toshiba International Corporation Company warrants that all equipment and parts described herein will be free from defects in materials and workmanship THIS WARRANTY WILL EXPIRE EIGHTEEN 18 MONTHS AFTER THE DATE ON WHICH SUCH EQUIPMENT AND PARTS EXCLUDING REPAIRED OR REPLACEMENT EQUIPMENT AND PARTS FURNISHED PURSUANT TO THIS WARRANTY ARE SHIPPED BY THE COMPANY TO THE INITIAL PURCHASER OR TWELVE 12 MONTHS AFTER SUCH EQUIPMENT AND PARTS EXCLUDING REPAIRED OR REPLACEMENT EQUIPMENT AND PARTS FURNISHED PURSUANT TO THIS WARRANTY ARE FIRST PLACED IN OPERATION WHICHEVER PERIOD FIRST EXPIRES The Company will at its option repair or replace such equipment or part which is defective under the terms of the foregoing warranty free of charge provided the purchaser 1 promptly notifies the Company in writing of such defect and 2 furnishes the Company satisfactory proof thereof and 3 establishes that the equipment or part has been properly installed maintained and operated within the limits of rated capacity and normal usage and in accordance with this manual and 4 if requested by the Company returns the defective equipment or part to the Compan
22. his plug is left in place the circuit breaker will operate normally without power applied to relay UV Removing this plug Fig 33 activates the undervoltage trip function Fig 33 Removing Plug From UV Trip Device Fig 32 Plug Installed in UV Trip Device MAINTENANCE Page 25 MAINTENANCE PROGRAM In order to ensure continued reliable and safe operation of the equipment a program of periodic maintenance must be established Operating and environmental conditions will usually dictate the frequency of inspection required NFPA Publication 70B Electrical Equipment Maintenance may be used as a guide for setting up the maintenance program Contact with energized components can cause severe injury death and property damage Turn off and lock out primary and control circuit power before servicing Improper maintenance can cause severe injury death and property damage Only qualified and authorized persons are to install operate or service this equipment AWARNING Grease is conductive Do not allow grease or any other substances to contaminate insulating materials Contaminated insulators can allow a short circuit or ground fault to occur AWARNING NOTE Refer to the SAFETY section of this manual for important information MAINTENANCE RECORD Keep a permanent record of all maintenance work At a minimum this record should include information on 1 Items inspected 2
23. hout fault or otherwise arising out of connected with or resulting from the equipment and parts described in this manual or the performance or breach of any contract for the sale or supply of such equipment and parts or from the design manufacture sale delivery resale installation technical direction or supervision of installation inspection testing repair replacement operation maintenance or use of any such equipment or part or any service relating thereto furnished by the Company shall not in any event exceed the price allocable to the equipment part or service which gives claim loss or damage In no event whether as a breach of contract or warranty alleged negligence liability without fault or otherwise shall the Company Toshiba Corporation or their suppliers or subcontractors be liable for special or consequential damages including without limitation loss or profits or revenue loss of equipment described herein or any associated equipment cost of capital cost of substitute equipment or parts facilities or services down time costs labor costs or claims of customers of the purchaser for such damages TOSHIBA TOSHIBA INTERNATIONAL CORPORATION 13131 W Little York Road Houston TX 77041 U S A Tel 713 466 0277 Fax 713 466 8773
24. it breaker On Off indicator changes to ON When the handle is released it returns to its normal position 4 Manual Trip Lever Red Pushing the lever in the direction of the arrow trips the circuit breaker On Off indicator changes to OFF 5 Operations Counter Indicates the total accumulated number of times the circuit breaker has been closed Fig 3 Indicators and Controls RECEIVING INSPECTION AND HANDLING Page 9 RECEIVING AND UNPACKING The circuit breaker units are subjected to factory Fig 4 Closing Handle production testing prior to being packed and shipped ACCEPTANCE INSPECTION Confirm that the circuit breaker unit is complete correct as specified and undamaged from shipment and handling Upon receipt of the equipment do the following 1 Make an immediate inspection for damage which might have occurred during shipment If damage is discovered it should be noted with the carrier prior to accepting the shipment if possible 2 Carefully unpack the equipment sufficiently to check for missing parts or concealed damage 3 Check for the presence of accessories that are shipped with the circuit breaker Fig 5 Insulating Cylinder Closing Handle shipped loose with MU and ML type breakers Fig 4 Insulating cylinders qty 6 Fig 5 3 Keep the circuit breaker upright Never lay the circuit ACAUTION breaker on its side or upside down This may cause damage 4 File a
25. l is not intended to cover all details combinations or variations of the equipment Always refer to drawings accompanying the equipment for additional details All safety warnings must be followed to ensure personal safety General safety instructions are found on pages 1 through 3 Read and save these instructions for future reference Follow all precautions to attain proper equipment performance and longevity Dimensions shown in the manual are in metric and or their English equivalent This manual is divided into major sections of interest as follows GENERAL DESCRIPTION Provides a description of the equipment information on major components and how they function plus rating information RECEIVING INSPECTION AND HANDLING Describes procedures for receiving unpacking inspecting handling lifting and moving the circuit breaker INSTALLATION Provides information on installing the circuit breaker in the switchgear cell along with breaker racking procedures PRE ENERGIZATION CHECK Provides a checklist for preparing the equipment for energization OPERATION Provides information on manual and electrical operation of the circuit breaker circuit diagrams operating sequence description and operation of circuit breaker optional accessories MAINTENANCE Lists the basic maintenance procedures for this equipment necessary for safe and reliable operation DISPOSAL Lists procedures for the safe disposal of the equipment when the
26. n the OPERATION section of this manual On the U and MU type breakers connections to auxiliary contacts are made directly to the auxiliary switch Fig 21 On the L and ML type breakers connections to auxiliary contacts are made to a terminal block on top of the operating mechanism Fig 22 ADDITIONAL AUXILIARY SWITCH Optional An optional second auxiliary switch may be furnished located on the right side as viewed from the rear of the breaker When a second auxiliary switch is furnished control wires are connected directly to the switch Fig 20 Connection to Control Terminal Block Fig 21 Auxiliary Contact Connections on U n a and MU Type Breakers Fig 22 Auxiliary Contact Connections on L and ML Type Breakers Page 18 PRE ENERGIZATION CHECK GENERAL BEFORE ENERGIZING THE CIRCUIT BREAKER for the first time follow the procedure below to verify that the equipment is properly installed and functional ADANGER AWARNING AWARNING AWARNING AWARNING Hazardous Voltage Turn off and lock out all primary and control circuit power sources prior to performing this pre energization check Do not operate this equipment until a complete safety inspection has been made Do not energize damaged equipment that has not been repaired or verified Do not remove cover or destroy any safety signs Do not operate this eq
27. operated If the circuit fails to Circuits movement of control circuit type should charge operate check the motor charging quickly and smoothly cause and repair mechanism Terminals loose Visual Make sure terminals are Repair if or disconnected inspection not loose or disconnected disconnected Tighten using a Tighten if loose screwdriver See Table 1 for tightening torques Insulation Meaure main Megger test at Resistance should be If the insulation Resistance circuit to ground 1000V 500 or greater resistance is low Measure wipe off the vacuum ment interrupter and other insulation surfaces Meaure Megger test at Resistance should be with a clean dry between main 1000V 100MQ or greater cloth and then circuit terminals repeat the test Meaure control Megger test at Resistance should be circuits to 500V 2MQ or greater ground MAINTENANCE Page 29 VACUUM CHECK A sufficient level of vacuum is necessary for proper performance of the vacuum interrupters Although vacuum leaks are rare the vacuum integrity should be checked periodically The relationship between dielectric breakdown voltage of the contact gap and internal vacuum interrupter pressure has been found to be generally predictable Therefore vacuum interrupter integrity is checked by performing a high potential test across the open gap of the interrupter TEST EQUIPMENT Toshiba offers a compact vacuum checker Type C135 1D which enable
28. ous current in accordance with NEC requirements and should have an adequate voltage rating Cables should be dressed and terminated as appropriate to the voltage class and cable manufacturers recommendations When terminating shielded cables use termination kits appropriate for the system voltage to taper the insulation and reduce electrical stress Follow the manufacturers installation instructions provided with the termination kit To connect cables follow the steps below 1 Pass the cable through the insulating cylinder six cylinders are supplied with the circuit breaker Fig 15 2 Fasten the cable to the main circuit terminal Fig 16 Use 35 mm Class 8 8 M10 or M12 Terminal hex head bolts 2 flat washers lock washer and a nut While securely preventing the bolt from rotating with a wrench torque the nut to 250 315 kgf cm 18 23 ft Ib for M10 bolts or 450 565 kgf cm 32 41 ft Ib for M12 bolts Use two wrenches to torque the connection to prevent applying excessive force to the terminal which can damage the frame ACAUTION 3 Fasten the insulating cylinder in place then check to make sure that the hook is engaged Fig 17 Fig 17 Fasten Insulating Cylinder 16 INSTALLATION GROUND CONNECTIONS The circuit breaker must be grounded in accordance with the requirements of the National Electrical Code Article 250 or applicable local standards Proper grounding connections must b
29. s a quick and easy check on vacuum interrupter internal pressure Alternatively any commercially available AC high potential tester may be used which is capable of delivering at least 25 milliamperes at 22 kV for period of one minute PRECAUTIONS Applying abnormally high voltage across a pair of contacts in vacuum may produce X rays The radiation may increase with the increase voltage and or decrease in contact spacing X radiation produced during this test with recommended voltage and normal contact spacing is extremely low and well below the maximum permitted by standards As an additional safety measure however it is recommended that all personnel keep at least 1 meter 3 3 ft away from the vacuum circuit breaker while this test is performed Radiation exposure hazard X rays may cause illness or injury Stay at least 1 meter 3 3 ft away from the circuit breaker during the vacuum check test AWARNING Hazardous voltages are AWARNING present during dielectric testing which can result in severe injury or death Only qualified personnel should conduct this testing TEST PROCEDURE 1 The circuit breaker should be disconnected from the main circuit and be in the OFF position Connect all the line side primary terminals together and to the output of the vacuum checker or AC hi pot machine Connect all the load side primary terminals together and to the ground terminal
30. sing handle 2 Manual trip lever 3 On Off indicator 4 Spring charge indicator MU and ML only 5 Operations counter 6 Secondary control circuit terminal block 7 Main circuit terminals 8 Auxiliary switch 9 Grounding terminal Fig 1 U and MU Type Circuit Breaker Upper Main Circuit Terminals Fig 2 Land ML Type Circuit Breaker Rear Main Circuit Terminals Page 8 GENERAL DESCRIPTION SAFETY DEVICES Safety interlocks and guards are provided as an integral part of the equipment design These devices are provided for safety to the operator ADANGER Never defeat modify or bypass any safety devices interlocks or operating mechanism This would make the equipment unsafe Fire explosion severe injury death and property damage could occur Do not operate this equipment unless all AWARNING covers and panels are in place INDICATORS AND CONTROLS Fig 3 The following front panel indicators and controls are provided 1 On Off Indicator Indicates if the circuit breaker is OFF Green or ON Red When the indicator reads OFF the main contacts of the circuit breaker are open When the indication is ON the main contacts are closed 2 Closing Spring Status Indicator MU ML types only Indicates if the closing springs are CHARGED Yellow or DISCHARGED White 3 Manual Closing Handle Rotating the handle clockwise approximately 75 closes the circu
31. tifiers The peak voltages produced by these testers may exceed the recommended value of 31kV This can result in the production of harmful X rays and may invalidate the test results AWARNING Fig 35 Application of Test Voltage for Vacuum Check K 1 minute 22kV AC 31kV DC Voltage DISPOSAL Page 31 DISPOSAL Contact your state environmental agency for details on disposal of electrical components and packaging in your particular area STORAGE Page 32 STORAGE If the circuit breaker is to be stored for any length of time prior to installation the following precautions should be taken 1 The original packing should be restored if possible 2 Do not subject the equipment to moisture or sun rays Store in cool clean and dry location 3 Place a dust cover over the circuit breaker packaging to protect against dirt and moisture 4 Store in an upright position INSPECTION DURING STORAGE Routine scheduled inspection is necessary if storage is for an extended period The unit should be checked for condensation moisture corrosion and vermin Prior to installation the circuit breaker should be carefully examined for evidence of physical damage corrosion or other deterioration Refer to the PRE ENERGIZATION Section of this manual The MAINTENANCE section of this manual describes various types of inspections recommended for this circuit breaker during the
32. uipment until all panels and covers have been installed ELECTRICAL CHECKS Electrical shock hazard AWARNING Do not touch energized components during a test using auxiliary power An electrical insulation resistance test should be performed to verify that the circuit breaker and associated field wiring are free from short circuits and grounds Refer to the MAINTENANCE Section of this manual for additional information Hazardous voltages are AWARNING present during dielectric All blocks or other temporary braces used for shipment must be removed Before closing the enclosure all metal chips scrap wire and other debris left over from installation must be cleaned out Cover all unused openings Install all panels guards and covers A supply of spare parts should be established Instruction manuals and diagrams should be collected and filed testing which can result in serious injury or death High potential tests should be performed only by qualified personnel The circuit breaker must be set to the OFF position before energizing incoming power OPERATION Page 19 MANUAL OPERATION Fig 23 Preparing to Manually Close Breaker AWARNING Powerful springs Do not uu place your hands or any part of your body inside the circuit breaker while the indicators show CHARGED yellow or ON red
33. y and pays all expenses incurred in connection with such return The repaired or replacement equipment or part will be delivered free of charge to the purchaser F O B the Company s warehouse or at the Company s option F O B a Company authorized service shop not loaded on truck or other carrier The purchaser will pay the costs applicable to the equipment or part following such delivery including without limitation all handling transportation assembly insurance testing and inspection charges THE FOREGOING OBLIGATION TO REPAIR OR REPLACE EQUIPMENT PARTS SHALL BE THE SOLE AND EXCLUSIVE REMEDY OF THE PURCHASER ITS CUSTOMERS AND USERS OF THE EQUIPMENT AND PARTS FOR BREACH OF THE FOREGOING WARRANTY THE COMPANY WILL HAVE NO OBLIGATIONS TO DISASSEMBLE ANY EQUIPMENT OR PART WHICH IS DEFECTIVE WITHIN THE TERMS OF THE ABOVE WARRANTY OR TO INSTALL ANY REPAIRED OR REPLACEMENT PART OR EQUIPMENT OR TO PAY ANY COSTS INCURRED IN CONNECTION WITH ANY SUCH DISASSEMBLY OR INSTALLATION THE COMPANY TOSHIBA CORPORATION AND THEIR SUPPLIERS AND SUBCONTRACTORS HEREBY DISCLAIM ALL OTHER EXPRESS STATUTORY AND IMPLIED WARRANTIES INCLUDING WITHOUT LIMITATION ALL EQUIPMENT AND PARTS FURNISHED PURSUANT TO THE FOREGOING WARRANTY AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY The total liability of the Company Toshiba Corporation and their suppliers and subcontractors for any loss damage or claim whether in contact tort including negligence and liability wit
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