Terasaki - Air Circuit Breaker
70Pages

5-3-3. S characteristic for generator protection35 1. SAFETY NOTICES1 5-4. Operation Indication and Indication Resetting Procedure37 2. RECEIVING AND HANDLING3 5-5. OCR Function Check38 2-1. Transportation Precautions3 2-1-1. Transporting the ACB3 6. MAINTENANCE, INSPECTION AND PARTS 2-1-2. Transporting the breaker body4 REPLACEMENT39 2-1-3. Transporting the draw-out cradle4 6-1. Inspection Procedures40 2-2. Storage Precautions4 6-2. Parts Replacement Procedure43 2-3. Installation Precautions5 6-2-1. Preparation43 3. GENERAL7 6-2-2. Arc chambers46 3-1. Types and Descriptions7 6-2-3....

Thank you for purchasing the TERASAKI AR-series Air Circuit Breaker (TemPower2).This chapter contains important safety information. Be sure to carefully read these safety notices, instruction in this manual, and other documents accompanying the Air Circuit Breaker (hereinafter referred to as the ACB) to familiarize yourself with safe and correct procedures or practices before installing, operating, or servicing the ACB.In this manual, safety notices are divided into DANGERӔ and CAUTIONӔ according to the hazard level: DANGER : A danger notice with this symbol indicates a potentially...

Repeated open/close operation by the motor charging mechanism without pause should not exceed 15 times. If repeatedcontinuous open/close operation is inevitable, a pause of at least 20 minutes should be provided after the repetitions of 15times. Otherwise, a spring charging motor may be burnt out. Do not bring your hand or face close to arc gas vent of the arc chamber while the ACB is closed. Otherwise, a burn mayresult from high-temperature arc gas blowing out of the arc gas vent when the ACB trips open. If the ACB trips open automatically, remove the cause of tripping operation before...

Upon receipt of your ACB, check the following. If you have any question or problem, contact us at the indicated on the backcover of this manual. Check that the ACB received is as ordered and that the accessories are as specified. Check that the ACB is not damaged during shipment. > Never stand under the ACB that has been lifted or suspended by a lifter or lifting attachments. If the ACB body isaccidentally dropped, its weight may cause serious injury. > Before transporting the ACB, make sure the breaker body is in the CONN. position. If the ACB has breaker fixing bolts, makesure the breaker...

Use an optional lifter or lifting plate to transfer the breaker body. When transporting the breaker body on a lifter, move the lifter with the lifter fork held at the lowest possible position. Take care not to exert forces on the front cover and the control circuit contacts shown in Fig. 2 . Otherwise, a deformation or damage mayresult. Lifting plate Front coverControl circuitcontact Front viewRear viewFig. 2 Transporting the breaker body > When transporting the draw-out cradle, hold it using lifting attachments or wire ropes through the lifting holes or carry it by the portions(4 points)...

Use the receptacles shown in Table 2 to make connections with plug-in tab terminals (#187) of position switches, controlcircuit terminals, and auxiliary switches. Table 2 Receptacles for #187 tab terminals Wire thickness (mm > 2 )AWGRecommended terminalsApplicable crimp toolManufacturer 0.75 - 1.2518 - 16TMEDN480509-FA 214TMEDN480520-FANH-32NICHIFU The following procedure makes it easy to make connections with plug-in tab terminals (#187) of position switches, controlcircuit terminals, and auxiliary switches. (1) Draw out the breaker body to the removed position, and remove it using an...

6 ON-OFF indicator Front cover > 19 7 Charge indicator ON-OFF cycle counter > 16 OFF button > 4 8 Charging handle ON-OFF button cover > 15 Lock-in-OFF plate > 14 5 ON button > 15 ON-OFF button cover Overcurrent release (OCR) > 18 OCR cover > 17 20 Rating nameplate > 9 Position indicatorDraw-out handle insertion hole Position padlock lever > 13 Release button > 12 51 Draw-out handle Ground terminalM8 ta > 11 1 37 39 Control terminal block cover Control circuit terminal > 38 49 Lifting hole (20mm) Specification nameplate > 40 Cover fixing screw Control circuit contact > 25 41 Auxiliary...

1ACB Consists of breaker body > 3 and draw-out cradle > 2 . > 2 Draw-out cradle Comes with main circuit terminals > 48 , control circuit terminals > 38 , auxiliary switches > 41 , and positionswitches > 37 . > 3 Breaker body Contains the ON-OFF mechanism, the closing coil the tripping device, and overcurrent release > 19 . > 4 OFF button Push to open the ACB. > 5 ON button Push to close the ACB. > 6 ON-OFF indicator Shows OFFӔ when the ACB is open and ONӔ when it is closed. > 7 Charge indicator Shows CHARGEDӔ when the closing springs are charged and DISCHARGEDӔ when it is released. > 8...

37 Position switches (optional) Indicate the present breaker body position: CONN., TEST, ISOLATED or INSERTED. Theposition switches are available in 2C or 4C configuration. Connections to the position switches are made through #187 plug- in tab terminals (standard) or M4 screws. > 38 Control circuit terminals Allow connections of external control wire to the control circuits. Wire connections are madethrough #187 plug-in tab terminals (standard) or M4 screw terminals. Fig. 8 shows the #187 tab terminals and M4 screwsterminals. #187 tab terminalsM4 screw terminalsFig. 8 Control circuit...

Auxiliary switches Voltage (V)Resistive load(A)Inductive load(A) *1Resistive load(A)Inductive load(A) *2Resistive load(A)Inductive load(A) *2 For general feederFor microloadPosition switches AC100 - 250550.10.1116 AC251 - 50055---- DC8----106 DC30110.10.165 DC125----0.60.6 DC250----0.30.3 DC125 - 25011---- > *1: AC cosи 0.3, DC L/R 0.007*2: AC cos 0.6, DC L/R 0.01*3: Min. applicable load: DC5V/1 mA Rated contact current (A) Individual indication Voltage (V)Resistive load (A)Inductive load (A)*1Resistive load (A)Inductive load (A)*2Resistive load (A)Inductive load (A)*2 Group...