terasaki shunt trip coil

TERASAKI TemPower2 AR-E Series Instruction Manual

1 safety notices, 2 receiving and handling.

Page 1 INSTRUCTION MANUAL FOR AR-E AIR CIRCUIT BREAKERS (Fixed type and Type AGR-12B Overcurrent Protective Device) AR206E Types: AR208E AR210E AR212E AR216E Notice  Be sure to read this manual before installing, operating, servicing, or inspecting the ACB.  Please retain this manual for future reference. ...

Page 6  Operation Precautions (continued) CAUTION  Repeated open/close operation by the motor charging mechanism without pause should not exceed 15 times. If repeated continuous open/close operation is inevitable, a pause of at least 20 minutes should be provided after the repetitions of 15 times.

Page 8: storage precautions.

Page 9  Use a support to hold conductors securely at distance L as shown in Fig. 2 and Table 2. Such a support will help preventing the conductors and main circuit terminals from being deformed or damaged due to a large electromagnetic force caused by any fault current.

Page 11 Table 5 shows the dielectric withstand voltage and the insulation resistance of the ACBs. CAUTION  Do not perform dielectric withstand/insulation resistance tests under other conditions than specified. Doing so may cause a malfunction. Table 5 Dielectric withstand voltage and insulation resistance Insulation Impulse withstand resistance...

Page 13 ACB body ◯ OFF button Push to open the ACB. ◯ ON button Push to close the ACB. ◯ ON-OFF indicator Shows “OFF” when the ACB is open and “ON” when it is closed. ◯ Shows “CHARGED” when the closing springs are charged and “DISCHARGED” when it Charge indicator ◯...
Page 14 Vertical terminals Horizontal terminals Front terminals Fig. 6 Main circuit terminals Lifting hole (ø20mm) Allows lifting attachments or wire ropes to be used for lifting the ACB. ◯ -14- KRB-5368c...

Page 16 Fig. 7-2 Breaker circuits 2 Table 8-2 Terminal functions and circuit symbols 2 Symbol Meaning Symbol Meaning Instantaneously rated Instantaneously- – CT CT for OCR *6 rated shunt trip device *5 Magnet hold trigger Undervoltage trip device Spring charging motor Hand connector Control relay User wiring...
Page 17 Fig. 9 provides the terminal arrangement of the ACB. Fig. 9 Terminal arrangement Tables 9 - 14 show the ratings of the operation power supply, the Instantaneously-rated shunt trip device (SHT), the undervoltage trip device (UVT), auxiliary switches, operation indication contacts, and the N-phase CT. Table 9 Ratings of operation power supply Ratings of operation power supply Permissible...
Page 18 Table 11 Ratings of undervoltage trip device (UVT) Rated voltage Opening voltage Attraction voltage Coil exciting Power consumption (VA) Coil resistance (ohm) * range (V) current (A) Normal Attraction AC100 35 - 70 AC110 38.5 - 77 93.5 AC120 42 - 84 AC200 70 - 140 AC220...

Page 20: closing operation, page 21: motion of operation mechanisms.

Page 22 The charging handle or the charging motor provides a counterclockwise rotation to charging cam ◯ . This rotates closing release lever ◯ and closing tripper lever ◯ counterclockwise and a semicircular pawl engages with closing release lever ◯ . And closing spring ◯...

Page 24: ocr cover locking procedure, page 25: characteristics.

Page 26 Protection characteristic Note 1: The operating time (t) at a long time delay, N-phase protection or Pre-trip alarm pickup current setting is given by  Long time delay t = -27.94×t { 1 - ( 1.125I } ±20% +0.15 –0 [sec] ×log = Long time delay pickup current setting, i = Overcurrent, t...

Page 28: operation indication, page 29: maintenance, inspection and parts replacement, page 30: inspection procedures.

Page 31 Table 21 Normal inspection procedure Check point Check item Description Discoloration Check connection conductors, main circuit terminals, and current carrying parts for heat of conductors discoloration. If such a symptom is found, contact us. Check that screws, bolts, nuts, washers, springs, retainers and the like are not missing. If any parts 2 Parts missing are missing, contact us.
Page 32 Table 22 Detailed inspection procedure Check point Check item Description Disconnect hand connector (green) that is closer to coil than the other and, using tester, measure coil 1 Coil resistance resistance between terminals and make sure it is within range specified in Table 9. (*3) If not so, replace LRC.

Page 34 (3) Remove the terminal block fixing screws as shown in Fig. 24, and move the terminal block. Take care to prevent the link lever of auxiliary switches from bending. Terminal block fixing screws, Hex head M5 x 10 (4) with spring and flat washers Tightening torque: 2.7 - 3.5 N·m Terminal block Link lever of auxiliary switches...
Page 35 (5) Reinstall each part or component in reverse order of removal after inspection. When installing the UVT, make sure the nameplate on the UVT can be viewed from the front of the ACB. and make sure the link lever pin of auxiliary switches is position specified in Fig.26.

Page 37: latch release coil (lrc), page 38: instantaneously-rated shunt trip device (sht), page 39: control relay.

Page 40 6) Raise the OCR to unlatch from other parts, remove the OCR and place it on the top of the breaker body. See Fig. 37. 7) Remove the OCR connector . OCR connector Latch Fig. 37 Removing the OCR connector 8) Remove the relay retainer shown in Fig.

Page 42: auxiliary switches, page 43: troubleshooting flowcharts.

Page 44 Unlock mechanism. See No. 9 Repair lock active? in Table 21. Is the SHT trip Is manual closing Deactivate Contact Terasaki. command active? Possible? Check the UVT Supply correct voltage. Check the operation voltage. Supply correct voltage. attraction voltage. Check...
Page 45 Correct/adjust Repair See No. 10 in Table 21. as specified? Check the tripping Is the load current as operation. See No. 24 Contact Terasaki. specified? in Table 22. Are main circuit Check terminal screws loose? See Retighten contacts. See Nos.
Page 46 Circuit Breaker Division 6-13-47 Kamihigashi, Hiranoku, Osaka 547-0002, Japan TEL +81-6-6791-2763 FAX +81-6-6791-2732 www.terasaki.co.jp [email protected] Published in January 2006 Revised in December 2008 Revised in February 2017 Revised in June 2018 The contents of this manual may be subject to change without notice.