Document: GF07Z312 Rev 2 INSTALLATION & OPERATION MANUAL HV6CS Vacuum Circuit Breakers – Fixed Type 7.
Important Notice The instructions contained in this manual are not 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 equipment. Should additional information be required, contact your Toshiba Customer Support Center. The contents of this manual shall not become a part of or modify any prior or existing agreement, commitment, or relationship.
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.com. Purpose and Scope of Manual This manual provides information on how to safely install, operate, maintain, and dispose of your HV6CS breaker.
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 problem that you may experience or to provide application information. The Support Center is open from 8 a.m. to 5 p.m. (CST), Monday through Friday. The Center’s toll free number is US (800) 231-1412/Fax (713) 937-9349 CAN (800) 872-2192 MEX 01 (800) 527-1204.
Table of Contents General Safety Information ………………………………………………………………………. 1 Safety Alert Symbol ……………………………………………………………………….. 1 Signal Words ………………………………………………………………………………. 1 Equipment Warning Labels ………………………………………………………………. 2 Qualified Personnel ……………………………………………………………………….. 2 Equipment Inspection …………………………………………………………………….. 3 Handling and Storage …………………………………………………………………….. 3 Disposal ……………………………………………………………………………………. 4 During Use………………………………………………………………………………………….... 5 1.
General Safety Information DO NOT attempt to install, operate, maintain, or dispose of this equipment until you have read and understood all of the product safety information and directions that are contained in this manual. Safety Alert Symbol The Safety Alert Symbol is comprised of an equilateral triangle enclosing an exclamation mark. This indicates that a potential personal injury hazard exists.
Equipment Warning Labels DO NOT attempt to install, operate, perform maintenance, or dispose of this equipment until you have read and understood all of the product labels 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 remove or cover any of these labels. If the labels are damaged or if additional labels are required, contact the Toshiba Customer Support Center.
Equipment Inspection • Upon receipt of the equipment, inspect the packaging and equipment for shipping damage. • Carefully unpack the equipment and check for parts that may have been damaged during shipping, missing parts, or concealed damage. If any discrepancies are discovered, it should be noted with the carrier prior to accepting the shipment, if possible. File a claim with the carrier if necessary and immediately notify your Toshiba Customer Support Center.
Operating the VCB Failure to take the opportunity to discover 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. To avoid damaging the equipment, do not close the circuit when the unit switching indicator is ON. Connecting and disconnecting the main circuit To avoid injury and damage to the equipment, do not remove the holding pin unless you are moving the VCB outside the panel.
During Use Installation location To prevent damage to the VCB or performance degradation, do not store or install it in the following locations: * Places whose ambient temperature is outside the range of -5C to 40C (23F to 104F). This may result in damage or performance degradation. * Places exceeding 1000 m (3300 ft) elevation. This may result in damage or performance degradation. * Places where excessive dust is produced. This may result in damage or performance degradation.
Special environmental conditions When using the VCB in special environments, check the points in Table 1 below. Table 1 Points to Check When Using the Circuit Breaker in Special Environments Special environmental condition Contamination Practical example Check points * Large amounts of dust.
Applicable standards pertaining to switching surges Consult Table 2 for the standards applicable to VCB 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) Protected by surge suppressor Oil-immersed transformer (insulation resistance class A) Phase advance capacitor *4, *5 6.
1.
2. From Receipt to Storage 2.1 Receipt and Unpacking Each VCB unit is carefully tested and inspected prior to shipment, so it can 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 sure it is not damaged or warped. (2) Remove the unit from the box carefully to avoid damaging it. CAUTION To prevent injury or damage to the equipment, make sure the unit is standing straight up.
2.2 Transport CAUTION 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 (Incorrect Method of Transportation) 2.2.1 Transporting U Type VCBs (main circuit terminals on top left and right) Holes for lifting Dia.
2.2.2 Transporting L Type VCBs (main circuit terminals on rear top and bottom) Holes for lifting Dia. 13 on both sides Figure 5 Lifting the VCB (Correct Method of Transportation) 2.2.3 Transportation (Manual handling) The circuit breaker shall be moved by two (2) persons as shown in Fig. 6.
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 storage and installation locations (see page 5). (1) When storing the unit, cover it with a dust cover. (2) Avoid locations subject to high humidity or exposed to direct sunlight.
3. Installation Make sure the location satisfied the requirements listed under Storage and Installation Location (page 3) and check the dimensions using 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 should be verified. This value must not exceed the symmetrical interrupting capability of the circuit breaker. See typical circuit breaker nameplate below.
Screw nominal dia. M4 M5 M6 Tightening torque 1.47 to 1.96 N-m (15 to 20 kgf-cm) 2.94 to 3.92 N-m (30 to 40 kgf-cm) 4.90 to 6.37 N-m (50 to 65 kgf-cm) Screw nominal dia. M8 M10 M12 Tightening torque 11.8 to 14.7 N-m (120 to 150 kgf-cm) 24.5 to 30.9 N-m (250 to 315 kgf-cm) 44.1 to 55.4 N-m (450 to 565 kgf-cm) Table 5 Tightening Torque Figure 9 Fix the front plate onto panel with two (2) M8 bolts and two (2) M4 screws removed at step shown in Fig. 8. 3.1.
3.1.3 Mounting method for the model provided one-person installation hook The thickness of panel shall be 3.2 mm, consult nearest sales office for other thickness. The mounting should be performed as described in Fig. 12 through Fig. 15. Figure 12 Remove the panel mounting bolts (M8 – 4 bolts and M4 – 2 pan-head screws). Figure 13 Suspend the breaker using with mounting hooks (2- locations) on panel, and fix the breaker to panel by bolts (M8 – 2 bolts).
3.2 Main Circuit Terminal Connections Perform the steps shown in Figures 16 through 20 in that order. Figure 16 Pass the cable or conductor through the insulating cylinder. Figure 17 Fasten the cable or conductor to the main circuit terminal. The use of 30 mm or 35 mm hexagonal bolts for M10 threads and 35 mm hexagonal bolts for M12 threads is recommended. Figure 18 Use both hands to connect the cable or conductor to the terminal.
Table 6 Tightening torque Screw Tightening torque M8 11.8 – 14.7 N m (120 – 150 kgf cm) M10 24.5 – 30.9 N m (250 – 315 kgf cm) M12 44.1 – 55.4 N m (450 – 565 kgf cm) Figure 20 Set the insulating cylinder in place, then check to make sure that the hook is engaged. 3.3 Ground Terminal Connections The ground terminal is on the left side of the terminal 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.
4. Operation CAUTION Failure to take the opportunity to discover 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 CAUTION To avoid damaging the equipment, do not close the circuit when the unit switching indicator is ON. 4.1.1 Closing the Circuit Check to make sure that the switching status is set to OFF. 4.1.1.
(1) When the spring is released Perform the steps shown in Figures 25 and 26 in that order. CHARGING HANDLE CLOSED LEVER 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 arrow to close the circuit. When the switching status will change to ON, the VCB is set in close state. (2) When the spring is taut Perform the step shown in Figure 27 in that order.
4.1.2 Opening the Circuit This operation is the same for both motorized and manual spring-operated VCBs. TRIP LEVER Figure 28 Press the trip lever (red) in the direction of the arrow to open the circuit.
4.2 Electrical Operation Electrical operations are performed as shown in the flow diagram below.
4.3 Control Circuit 4.3.
4.3.2 Undervoltage Trip All HV6CS 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 the UV (TC4) trip coil. When the circuit breakers are shipped, the Undervoltage trip device is defeated by a factory installed plug (Fig. 30). If this plug is left in place, the circuit breaker will operate normally without power applied to the UV coil. Removing this plug (Fig.
5. Maintenance/Inspections To prevent electric shock, turn off the power 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 parts. WARNING Keep fingers and other body parts, objects, etc. away from the unit mechanism, as you may become caught in the mechanism and injured.
3) Equipment condition 4) Corrective actions or adjustments 5) Date of work 5.1 During Maintenance/Inspections Before inspecting the electrical circuits, take the following measures to prevent 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 circuits of the VCB in no-voltage status. 2) Lock the disconnect switch to prevent operation and label it with an "INSPECTION IN PROGRESS" tag.
Type of inspection Patrol Inspection Periodic Inspection Normal Detailed Unscheduled Inspection Inspection frequency Once every 6 months Once every 1 to 3 years or every 3,000 operations Once every 6 years As needed 5.4 Periodic Inspection Checkpoints No. Location 1 Operating mechanism 2 Main circuit Table 7 Periodic Inspection Checkpoints Item Inspection Criteria method Loose bolts, Tighten using Make sure all nuts or screws screwdriver or bolts, nuts and wrench. screws are tight.
No. Location Item 3 Insulator Dust, foreign matter or damage 4 Auxiliary switch Terminals loose or disconnected Case/contacts 5 6 Control circuits Insulation resistance measurement Smooth movement when electricity is supplied Terminals loose or disconnected Inspection method Visual inspection. Visual inspection. Tighten using a screwdriver. Visual inspection Supply electricity to operate the circuit. Visual inspection. Tighten using a screwdriver.
Toshiba offers a compact vacuum checker (Type CI35-1D, see Figure 32) which enables 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 a period of one minute. Figure 32 Toshiba Portable Vacuum Checker PRECAUTIONS: Applying abnormally high voltage across a pair of contacts in vacuum may produce X-rays.
TEST PROCEDURE: 1. The circuit breaker should be disconnected from the main circuit and be in the OFF position. 2. 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 of the vacuum checker or AC hi-pot machine. 3. Increase the voltage from zero to 22kV AC at a rate of approximately 2kV per second.
Figure 35 shows the relationship between the dielectric breakdown characteristics and the withstand voltage between electrodes (for each vacuum interrupter) in the withstand voltage test.
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TOSHIBA TOSHIBA INTERNATIONAL CORPORATION INDUSTRIAL DIVISION 13131 W. Little York Road, Houston, TX 77041 U.S.A. Tel: +713- 466-0277 US 1-800- 231-1412 Fax: (713) 466-8773 www.toshiba.
