Toshiba HV6CS-MU manual

D o c u m e n t : G F 0 7 Z 3 1 2 R e v 2 INST ALLA TION & OPERA TION MANUAL HV6CS Vacuum Circuit Breakers – Fixed Type 7.2kV V olt age Class APPLICABLE MODEL NUMBERS: (Motor Operation T ypes) HV6CS-MU H V 6 C S - M L Issued: December , 2012[...]

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Important Notice The instructions contained in this manual are no t intended to cover all details or variations in equipment types nor may it provide for every possible contingency concerning the installation, operations, or maintenance of this equipmen t. Should additional information be required, contact your Toshiba Customer Support Center. The [...]

About This Manual Every effort has been made to provide accurate and concise information to you, our customer. At Toshiba International Corporation we are continuously striving for better ways to meet the constantly changing needs of our customers. E- mail your comments, questions, or concerns about this publication to controls@tic.toshiba.co m . P[...]

Contacting TIC’s Customer Support Center Toshiba International Corporation’s Customer Support Center can be contacted to obtain help in resolving any Adjustable Speed Drive system pr oblem that you may experience or t o provide application information. The Support Center is open from 8 a.m. to 5 p.m. (CST), Monday through Friday. The Center’s[...]

- 0 - Table of Contents General Safety Information ………………… …………………………… ………………………. 1 Safety Alert Symbol …… ………………………………………………………………….. 1 Signal Words ………………………………………………………………………………. [...]

- 1 - General Safety Information DO NOT attempt to install, operate, maintain, or di spose of this equipment until you have read and understood all of the product safety info rmat i on and directions that are contained in this manual. Safety Alert Symbol The Safety Al ert Symbol is comprised of an equilateral triangle enclosing an ex clamation mark[...]

- 2 - Equipment Warning Labels DO NOT attempt to install, operate, perform maint enance, or dispose of this equipment until you have read and understood all of the product l abels and user directions that are contained in this manual. Warning labels that are attached to the equipment will include the exclamation mark within a triangle. DO NOT remov[...]

- 3 - Equipment Inspection • Upon receipt of the equipment, inspect the packaging and e quipment for shipping damage. • Carefully unpack the equipment and check fo r parts that may have been damaged during shipping, missing parts, or concealed damage. If any discrep ancies are discovered, it should be noted with the carrier prior to accepting t[...]

- 4 - Operati ng the VCB Failure to take the opp o rtunit y to discover abnormalities can result in injuries and equipment damage. Always c heck to make sure that the ON and OFF indic ators ar e correct before operating the equipment. To avoid damaging the equipment, do n o t close the circ uit when th e unit switching indicator is ON. Connecting a[...]

- 5 - During Use Installation location To prevent damage to the VCB or performance degr adation, do not store or install it i n the following locations: * Places whose ambient temperature is outside the range of -5  C to 40  C (23  F t o 104  F). This may result in damage or performance degradation. * Places exceeding 1000 m (3300 ft) e[...]

- 6 - Special environment al conditions When using the VCB in special env ironment s, check the points in Table 1 below. Table 1 Points to Check When Using the Circuit Breaker in Spe cial E nvironments Special environmental condition Practical example Check points Contaminat ion * Large amount s of dust. * Salt corrosi on (locations near th e seash[...]

- 7 - Applicable standards pertain ing to switching surges Consult Table 2 for the standards ap plicable to V C B switching surges. Table 2 Applicable Standards Pertaining to Switching Surges Circuit breaker type Load type Rotating machine * 1 Dry type transformer (insulation resistance below class A) Oil-immersed transformer (insulation resis tanc[...]

- 8 - 1. Part Names Figure 1 U Type Circuit Breaker (main circuit terminals on upper left and right ) Figure 2 L Type Circuit Breaker (main circ uit t ermi nals on rear top and bottom) ON-OFF INDICA TOR SHAFT FOR MA NUAL CHARGING HANDL E AUXILIARY SWITCH SECONDARY TERMINAL BLOCK SPRING INDICA TO R MAIN CIRCUIT TERMINAL CLOSE LEVER TRIP LEVER COUNTE[...]

- 9 - 2. From Receipt to Storage 2.1 Receipt and Unpacking Each VCB unit is carefully tested and inspected prior to shipment, so it c an be used as soon as it has been unpacked. However, just in case something should be amiss, you should check the following: (1) When the box is delivered, check to make s ure it is not damaged or warped. (2) Remove [...]

- 10 - 2.2 Transport Use the proper procedures when moving or transporting the unit. Failure to use the proper (authorized) methods may damage the unit or cause it to fall, resulting in injury. Figure 3 WRONG ( I ncorrect Method of Transportation) 2.2.1 Transporting U Type VCBs (main circuit termin a ls on top left and right) Figure 4 Lifting the V[...]

- 1 1 - 2.2.2 Transporting L Type VCBs (main circuit terminals on rear top and bottom) Figure 5 Lifting the V CB (Correct Method of Transportation) 2.2.3 T ransportation (Manual handling) The circu it breaker shall be mov ed by two (2) pers on s as shown in Fig. 6. Figure 6 Transporting the VCB (Correct Me thod of Transportation) Holes for lifting [...]

- 12 - 2.3 Storage Use the following procedures if the VCB will not be operated for a long period of time after it has been installed, or if it must be stored for a long period of time prior to installation. Be sure to observe the precautions for storag e and installation locations (see page 5). (1) When storing the unit, cover it with a dust cover[...]

- 13 - 3. Installation Make sure the location satisfied the requi rements listed under Storage and Installation Location (page 3) and check th e dimensions usin g the diagrams in other catalogs or external view diagrams and panel cut diagram. Prior to installation, the maximum fault current capacity of the power system at the point of installation [...]

- 14 - Table 5 Tightening Torque 3.1. 2 Mounti ng Direc tly onto t he Floo r The VCB should be mounted to a surface with a le velness of ±0.5 mm. If there are any la rge gaps, use spacers to adjust. Check to make sure that the VCB is in OPEN status, and then mount it using the steps shown in Fi gures 10 and 11 in that order. . Screw nominal dia. T[...]

- 15 - 3.1.3 Mounting method for the model provided one-person inst allation hook The thickness of panel shall be 3.2 mm, consult nearest sales office for other th ickness. The mounting shou ld be performed as desc ribed in Fig. 12 thro ugh Fig. 15. Figure 12 Remove the p anel mounting bolt s (M8 – 4 bolt s and M4 – 2 p an-head screw s). Figure[...]

- 16 - 3.2 Main Circuit Te rminal Connections Perform the steps shown in Figures 16 through 20 in that order. Figure 16 Pass the cable or conductor through the insulating cy l inder. Figure 17 Fasten the cabl e o r conductor to the main circuit terminal. The use of 30 mm or 3 5 mm hexagonal bolts for M10 threads and 35 mm hexagona l bolts for M12 t[...]

- 17 - 3.3 Ground Term inal Connections The ground terminal is on the left side of the termi nal block as viewed from the rear of the VCB. To connect the ground line to the terminal, perform the steps shown in Figures 21 and 22 in that order. 3.4 Control Circuit Cable Connections Screw T ightening torque M8 1 1.8 – 14.7 N m (120 – 150 kgf cm) M[...]

- 18 - 4. Operation Failure to take the opportunity to discov er abnormalities can result in injuries and equipment damage. Always check to make sure that the ON and OFF indicators are correct before operating the equipment. 4.1 Manual Operation To avoid damaging the equipment, do not close the circuit when the unit switching indicator is ON. 4.1.1[...]

- 19 - (1) When the spring is released - Perform the steps shown in Figures 25 and 26 in that order. (2) When the spring is taut - Perform the step shown in Figure 27 in that order. Figure 25 Turn the handle clockwise 3 to 5 times and make sure that the spring status is taut. Figure 26 Press the closed lever (green) in the direction of the arr ow t[...]

- 20 - 4.1.2 Opening the Circuit This operation is the same for both motorized and manual spring-operated VCBs. Figure 28 Press the trip lev er (red) in the direction of the arrow to open th e circuit. TRIP LEVER[...]

- 21 - 4.2 Electrical Operation Electrical operations are performed as shown in the flow diagram below. Motor begins ope rating ・ Springs begin tightening Circuit br eaker OPEN Control power applied Motor begins ope rating ・ Spring begins tighte ning Spring s Charged ・ Motor sto ps Spring t aut ・ Motor stops CLOSE si gnal given CLOSE coil e[...]

- 22 - 4.3 Control Circuit 4.3.1 Motori z ed Oper a tion Figure 29 Control Circuit[...]

- 23 - 4.3.2 Undervo ltage Tr ip All HV6CS breakers are furnished with an undervolt age trip dev ice. The Undervoltage trip device operates to trip the circuit breaker OFF unless 120V AC control power is present at the terminals of the UV (TC4) trip coil. When the circuit breakers are shi pped, the Undervoltage trip device is defeated by a factory [...]

- 24 - 5. Maintenance/Inspections To prevent electric shock, turn off the po wer before starting maintenance and inspections. To prevent electric shock or other injury , check to make sure that the unit status indicators read OFF and DISCHARGED before beginning maintenance and inspection work. To prevent electric shock, do not touch charged p arts.[...]

- 25 - 3) Equipment condition 4) Corrective actions or adj ustments 5) Date of work 5.1 During Main tenance/Inspections Before inspecting the electrical circu its, take t he following measures to prev ent electric shock: 1) After opening circuit for the VCB, open the disconnect switch on the power source side to place the main circuit and control c[...]

- 26 - Type of ins pection Inspection frequency Patrol Inspect ion Once ever y 6 months Period ic Inspection No rmal Once every 1 to 3 years or every 3, 000 operations Detailed Once every 6 years Unscheduled In spection As needed 5.4 Periodic Inspec tion Checkpoints Table 7 Periodic Inspect i on Checkpoints No. Location Item Inspection method Crite[...]

- 27 - No. Location It em Inspection method Criteria Disposition Remarks 3 Insulator Dust, foreign matter or damage Visual inspection. Make sure there is no dust, foreign matter or breakage. Wipe with a clean dry cloth. If damaged, contact Toshiba. 4 Auxiliary switch Terminals loose or disconnecte d Visual inspection. Tighten using a screwdriv er. [...]

- 28 - T oshiba offers a compact vacuum checker (T ype CI35-1D, s ee Figure 32) which en ables a quick and easy check on vacuum inter rupter internal pressure. Alter natively , any commercially available AC high potential tester ma y be used which is capable of deliver ing at least 25 milli amperes at 22 kV for a period of one minute . Figure 32 T [...]

- 29 - TEST PROCEDURE: 1. The circuit br eaker should be discon nected fr om t he main circuit and b e in the OFF position. 2. Connect all the line side primary terminals together and to th e output of the vacuum checker or AC hi-pot machine. Connect all the load side primar y terminals together and to th e ground terminal of the vacuum checker or [...]

- 30 - Figure 35 shows the relationship between the dielectr ic breakdown characteristics a nd the withstand voltage between electrodes (for each vacuum interrupter) in the withst and voltage test. Figure 35 Dielectric Breakdown Characteristics[...]

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T OSHIB A TOSHIBA INTERNA TIONAL CORPORA TI ON INDUSTRIAL DIVI S ION 13131 W . L ittle Y ork Road, Hous ton, TX 77041 U.S.A. T el: +713- 466-0 277 US 1-800- 231-1412 Fax: (713) 46 6-8 773 www .tosh iba.com/in d[...]