TERASAKI TemPower 2 User manual

TERASAKI ELECTRIC (EUROPE) LTD.
80 Beardmore Way, Clydebank Industrial Estate,
Clydebank, Glasgow, G81 4HT, Scotland (UK)
Telephone: [phone]
Fax: [phone]
Email: [email protected]
http://www.terasaki.com
TERASAKI MIDDLE EAST
Saif Zone Q3-168, PO Box 120860
Sharjah, UAE
Telephone: [phone]
Fax: [phone]
Email: [email protected]
http://www.terasaki.com
TERASAKI ELECTRIC (EUROPE) LTD.
(FILIALE ITALIA)
Via Ambrosoli, 4A-20090, Rodano, Milano, Italy
Telephone: [phone]
Fax: [phone]
Email: [email protected]
http://www.terasaki.it
TERASAKI ELECTRIC (EUROPE) LTD.
(SUCURSAL EN ESPAÑA)
Pol. Ind. Coll de la Manya, C/Cal Ros dels Ocells 5
08403 Granollers , (Barcelona) España
Telephone: [phone]
Fax: [phone]
Email: [email protected]
http://www.terasaki.es
TERASAKI ELECTRIC (EUROPE) LTD.
(FILIAL SVERIGE)
Snickarvägen 2, SE-132 38 SALTSJÖ-BOO, Sweden
Telephone: [phone]
Fax: [phone]
Email: [email protected]
http://www.terasaki.se
TERASAKI CIRCUIT BREAKERS (S) PTD. LTD.
17 Tuas Street, Singapore, 638454
Telephone: [phone]
Fax: [phone]
Email: tecs@pacific.net.sg
TERASAKI ELECTRIC CO., LTD.
Head Office & Circuit Breaker Division
6-13-47 Kamihigashi, Hirano-ku,
Osaka 547-0002, Japan
Telephone: [phone]
Fax: [phone]
Email: [email protected]
http://www.terasaki.co.jp
TERASAKI ELECTRIC (M) SDN, BHD.
Lot 3, Jalan 16/13D, 40000 Shah Alam,
Selangor Darul Ehsan, Malaysia
Telephone: [phone]
Fax: [phone]
Email: [email protected]
TERASAKI DO BRASIL LTDA.
Rua Cordovil, 259-Parada De Lucas,
21250-450, Rio De Janeiro-R.J., Brazil
Telephone: [phone]
Fax: [phone]
Email: [email protected]
http://www.terasaki.com.br
TERASAKI ELECTRIC (CHINA) LTD.
72 Pacific Industrial Park, Xin Tang Zengcheng,
Guangzhou 511340, China
Telephone: [phone]
Fax: [phone]
Email: [email protected]
TERASAKI ELECTRIC GROUP SHANGHAI
REPRESENTATIVE OFFICE
Room No. 1405-6, Tomson Commercial Building,
710 Dong Fang Road, Pudong, Shanghai,
200122, China
Telephone: [phone]
Fax: [phone]
Email: [email protected]

KRB-5404
INSTRUCTION MANUAL FOR AIR CIRCUIT BREAKERS
(With Draw-out Cradle and Type AGR-11B,21B,22B,31B Overcurrent Protective Device)
Types: AR208S
AR212S
AR216S
AR220S
AR325S
AR332S
AR440S
AR440SB
AR212H
AR216H
AR220H
AR316H
AR320H
AR325H
AR332H
AR420H
AR440H
AR208D
AR212D
AR216D
Notice
Be sure to read this manual before installing, operating, servicing, or inspecting the ACB.
Please retain this manual for future reference.
Electrical work must be done by competent persons.
ACB maintenance, inspection, parts replacement, OCR field tests and setting changes must be
performed by competent persons.

KRB-5404
1. SAFETY NOTICES 5
2. RECEIVING AND HANDLING 7
2-1. Transportation Precautions 7
2-1-1. Transporting the ACB 7
2-1-2. Transporting the breaker body 8
2-1-3. Transporting the draw-out cradle 8
2-2. Storage Precautions 8
2-3. Installation Precautions 9
3. GENERAL 16
3-1. Types and Descriptions 16
3-2. Parts and Functions 20
3-3. Circuits and Ratings 24
4. OPERATION 31
4-1. Charging and Opening operation 31
4-1-1. Charging operation 31
4-1-2. Closing operation 32
4-1-3. Opening operation 32
4-1-4. Motion of trip indication and spring charge
indication switches 32
4-1-5. Motion of operation mechanisms 33
4-2. Draw-out and Insertion Operation 35
4-2-1. General 35
4-2-2. Draw-out operation 36
4-2-3. Putting the breaker body back into the draw-out
cradle 37
4-2-4. Contact status of auxiliary and position switches 39
4-3. ON-OFF Button Cover Locking Procedure 39
4-4. Lock in OFF Procedure 40
4-5. Position Lock Lever Locking Procedure 40
4-6. Breaker Fixing Bolt Securing Procedure 41
4-7. OCR Cover Locking Procedure 41
5. OVERCURRENT RELEASE (OCR) 42
5-1. Specifications 42
5-2. Characteristics 44
5-2-1. L characteristic for general feeder 44
5-2-2. R characteristic for general feeder 47
5-2-3. S characteristic for generator protection 51
5-3. OCR Setting Procedure 53
5-3-1. OCR Setting Procedure (AGR-11B type) 53
5-3-2. OCR Setting Procedure (AGR-21B,22B,31B type)
54
5-3-2-1. General 54
5-3-2-2. Available screens 55
5-3-2-3. Monitor screen 57
5-3-2-3-1. Monitor screen (AGR-21B,22B) 57
5-3-2-3-2. Monitor 1 screen (AGR-31B) 58
5-3-2-3-3. Monitor 2 screen (AGR-31B) 59
5-3-2-4. Setup screen 61
5-3-2-4-1. Setup screen(AGR-21B,22B) 61
5-3-2-4-2. Setup screen(AGR-31B) 63
5-3-2-5. Reset screen 66
5-3-2-5-1. Reset screen (AGR-21B,22B) 66
5-3-2-5-2. Reset screen(AGR-31B) 67
5-3-2-6. Setting 1 screen 68
5-3-2-7. Setting 2 screen 70
5-3-2-8. Maintenance screen 73
5-4. OCR Function Check 74
5-5. Operation Indication and Indication Resetting
Procedure 76
5-5-1. Operation Indication (AGR-11B type) 76
5-5-2. Operation Indication and Indication Resetting
Procedure (AGR-21B,22B,31B type) 77
6. MAINTENANCE, INSPECTION AND PARTS
REPLACEMENT 79
6-1. Inspection Procedures 80
6-2. Parts Replacement Procedure 83
6-2-1. Preparation 83
6-2-2. Arc chambers 86
6-2-3. Stationary contact 87
6-2-4. Moving contact 89
6-2-5 Latch release coil (LRC) 91
6-2-6. Shunt trip device (SHT) 92
6-2-7. Control relay 93
6-2-8. Magnet hold trigger (MHT) 96
6-2-9. Auxiliary switches 97
7. TROUBLESHOOTING FLOWCHARTS 99
8.DOOR INTERLOCK 102
9. MECHANICAL INTERLOCK DEVICE. (HORIZONTAL
TYPE) 104
TABLE OF CONTENTS

KRB-5404
4

KRB-5404
5
1. SAFETY NOTICES
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 theAir 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 “DANGER” and “CAUTION” according to the hazard level:
DANGER : A danger notice with this symbol indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION : A caution notice with this symbol indicates a potentially hazardous situation which, if not avoided, may result in
minor or moderate injury and/or property damage.
Note that failure to observe a caution notice could result in serious injury/damage in some situations. Because safety notices contain
important information, be sure to read and observe them.
Transportation Precaution
DANGER
Never stand under the ACB that has been lifted or suspended by a lifter or lifting attachments. The weight of the ACB may
cause serious injury.
Installation Precautions
CAUTION
Electrical work must be done by competent persons.
Do not place the ACB in such an area that is subject to high temperatures, high humidity, dusty air, corrosive gases, strong
vibration and shock, or other unusual conditions. Mounting the ACB in such an area could cause a fire or malfunction.
Be careful to prevent foreign objects (such as debris, concrete powder, dust, chippings, and iron powder) and oil or rainwater
from entering the ACB. These materials inside the ACB could cause a fire or malfunction.
Prior to commencing any work on the ACB, open an upstream circuit breaker or the like to isolate all sources of
power/voltage. Otherwise, electric shock may result.
Fix the draw-out cradle of the ACB firmly on a flat, level surface using mounting screws. Otherwise, the draw-out operation
may cause the breaker body or the draw-out cradle to fall, resulting in damage to the ACB or personal injury.
Take care not to deform or bend protrusions in the bottom face of the draw-out cradle when fixing the draw-out cradle with
mounting screws. Deformation of the protrusions may cause a malfunction.
Connect conductors (including screws) to the main circuit terminals in the specified area. Otherwise, a short-circuit may
result.
When terminating conductors to the ACB, tighten terminal screws to the torque specified in this manual. Otherwise, a fire
could result.
For 4-pole ACBs, be sure to connect a 3-phase, 4-wire neutral conductor to the N-phase pole (on the right end). Otherwise, an
overcurrent may hinder the ACB from tripping, resulting in a fire.
Operation Precautions
DANGER
Never touch live terminal parts. Doing so will result in electric shock.
Do not leave the ACB body in the draw-out position. If the ACB body is accidentally dropped, its weight may cause serious
injury.
CAUTION
Do not force down the charging handle after completion of manual charging operation. Doing so may cause a malfunction.
The permissible operating voltage of the spring charging motor is 85 to 110% of the rated ac voltage or 75 to 110% of the rated
dc voltage. Be sure to supply a voltage within the above ranges to the motor. Otherwise, a malfunction, burnout, or fire may
result.

KRB-5404
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. 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 may result
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 re-closing the ACB. Otherwise, a fire
could result.
If the ACB has the breaker fixing bolts, be sure to loose the fixing bolts before draw-out operation. Otherwise, damage to the
ACB may result.
Make sure the draw-out cradle is secured with mounting screws before inserting or drawing out the breaker body. Otherwise,
the insertion or draw-out operation may cause the breaker body or the draw-out cradle to fall, resulting in damage to the ACB
or personal injury.
When retracting the draw-out rail into the draw-out cradle, be sure to push the rail end. Do not hold the hook pin, body
stopper, or body stopper shaft. Doing so may cause your fingers to be pinched, resulting in injury.
Do not forcedly turn the draw-out handle clockwise when the breaker body is in the “CONN.” position. Doing so may cause a
malfunction.
If the ACB has the breaker fixing bolts, make sure the bolts on both sides are securely tightened before using the ACB.
Loosened fixing bolts may cause a malfunction of theACB, in particular when it is installed in such an area that is subject to
strong vibrations.
OCR (Overcurrent Release) Handling Precautions
CAUTION
OCR field tests and setting changes must be performed by competent persons.
After setting changes are made, the settings be checked with e.g., a type ANU-1 OCR checker (optional).
After completion of OCR tests, be sure to return the settings to the original values. Failure to do so may cause a fire or
burnout.
Before changing OCR settings, open the ACB and then lock the OFF button to prevent theACB from being closed
inadvertently.
Do not push the SET button diagonally. Doing so may cause a poor in return and malfunction.
Maintenance and Inspection Precautions
CAUTION
ACB maintenance, inspection and parts replacement must be performed by competent persons.
Do not touch ACB current carrying parts and ACB structural parts close to a current carrying part immediately after the ACB
trips open. Remaining heat may cause a burn.
Prior to commencing any work on the ACB, open an upstream circuit breaker or the like to isolate all sources of
power/voltage from the main and control circuits. Otherwise, electric shock may result.
Take care to avoid adhesion of dust to main and control circuit contacts. Dust on the contacts may result in a fire.
Prior to commencing maintenance, inspection, or parts replacement, make sure that the closing springs are released and the
ACB is open. Otherwise, unintentional open/close operation may lead to fingers or tools to be pinched by the open/close
mechanism, resulting in injury.
Retighten the terminal screws periodically to the specified torque. Otherwise, a fire could result.
When grinding a contact tip, be careful to prevent grinding dust from entering the breaker operating mechanism. Wipe the tip
clean after grinding. Otherwise, a malfunction or fire could result.
Do not perform dielectric withstand tests under other conditions than specified. Doing so may cause a malfunction.
Be sure to reinstall the arc chamber if removed. Failure to do so or incorrect installation of the arc chamber may result in a fire
or burn.
When charging the closing springs or performing open/close operation of the ACB with the arc chamber, front cover and/or
side covers removed during maintenance or inspection work, do not touch parts other than those required for the above
operation (charging handle, ON/OFF buttons, moving core and the like). Doing so may cause fingers or tools to be pinched,
resulting in injury.
When replacing an auxiliary, do not damage the control wire for the auxiliary or pinch the wire between the auxiliary and the
breaker body. Doing so may cause a malfunction.

KRB-5404
7
2. RECEIVING AND HANDLING
Upon receipt of yourACB, check the following. If you have any question or problem, contact us at the indicated on the back cover
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.
2-1. Transportation Precautions
DANGER
Never stand under the ACB that has been lifted or suspended by a lifter or lifting attachments. If the ACB body is accidentally
dropped, its weight may cause serious injury.
2-1-1. Transporting the ACB
Before transporting the ACB, make sure the breaker body is in the CONN. position. If the ACB has breaker fixing bolts, make
sure the breaker body is secured to the draw-out cradle with the fixing bolts.
When lifting the ACB, hold it using lifting attachments or wire ropes through the lifting holes. Take care that the position
switches, control circuit terminals, auxiliary switches, arc gas barrier and control terminal block cover which are shown in Fig. 1
are not damaged by the lifting rope. Lift the ACB carefully and gently. For transportation, place the ACB on a pallet and carry
slowly and carefully.
Avoid shock and vibration to theACB during transportation.
Do not lay the ACB during transportation.
When transporting theACB over great distances, crate it for protection against shock and vibration and secure the crate package
with wood or ropes.
When transporting theACB while it is installed in a switchboard, you should fix the breaker body in the draw-out cradle with the
breaker fixing bolts (optional).
Lower the ACB onto a flat, level surface.
Front view Rear view
Fig. 1 Transporting the ACB
Breaker body
Breaker fixing bolt
Lifting attachment
Control terminal block cover
Lifting hole (ø20mm)
Arc gas barrier
Draw-out cradle
Position switches
Control circuit terminals
Auxiliary switches

KRB-5404
8
2-1-2. Transporting the breaker body
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 may result.
Front view Rear view
Fig. 2 Transporting the breaker body
2-1-3. Transporting the draw-out cradle
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) marked with the arrows shown in Fig 3. When carrying the draw-out cradle, take care not to exert forces on
the arc gas barrier, the draw-out arm, the position switches, the auxiliary switches, the control circuit terminals, the control
terminal block cover, and the control circuit contacts.
Front view Rear view
Fig. 3 Transporting the draw-out cradle
2-2. Storage Precautions
It is recommended that the ACB be used as soon as you have received it. If it is necessary to store the ACB, note the following:
Store the ACB in a dry indoor location to prevent condensation due to sudden changes in ambient temperature. Condensation has
a harmful effect on the ACB insulation.
Store the ACB in a clean place free of corrosive gases and dust. In particular, exposure to a mixture of moisture and cement dust
may cause corrosion damage to metal parts of the ACB.
Place the ACB on a flat, level surface in its normal position (Do not lay the ACB).
Do not place the ACB directly on the floor. Do not stack the ACBs during storage.
Control circuit contact
Lifting plate
Front cover
Lifting attachment
Control terminal block cover
Lifting hole (ø20mm)
Arc gas barrier
Draw-out arm
Position switches
Control circuit terminals
Auxiliary switches
Control circuit contacts

KRB-5404
9
2-3. Installation Precautions
CAUTION
Electrical work must be done by competent persons.
Do not place the ACB in such an area that is subject to high temperatures, high humidity, dusty air, corrosive gases, strong
vibration and shock, or other unusual conditions. Mounting the ACB in such an area could cause a fire or malfunction.
Be careful to prevent foreign objects (such as debris, concrete powder, dust, chippings, and iron powder) and oil or rainwater
from entering the ACB. These materials inside the ACB could cause a fire or malfunction.
Prior to commencing any work on the ACB, open an upstream circuit breaker or the like to isolate all sources of
power/voltage. Otherwise, electric shock may result.
Fix the draw-out cradle of the ACB firmly on a flat, level surface using mounting screws. Otherwise, the draw-out operation
may cause the breaker body or the draw-out cradle to fall, resulting in damage to the ACB or personal injury.
Take care not to deform or bend protrusions in the bottom face of the draw-out cradle when fixing the draw-out cradle with
mounting screws. Deformation of the protrusions may cause a malfunction (see Fig. 4).
Connect conductors (including screws) to the main circuit terminals in the specified area. Otherwise, a short-circuit may
result.
When terminating conductors to the ACB, tighten terminal screws to the torque specified in this manual. Otherwise, a fire
could result.
For 4-pole ACBs, be sure to connect a 3-phase, 4-wire neutral conductor to the N-phase pole (on the right end). Otherwise, an
overcurrent may hinder the ACB from tripping, resulting in a fire.
Fig. 4 Protrusion on the bottom of the draw-out cradle
For AR440SB, the mounting screw protection covers are installed on two of four mounting screw holes. When fixing the draw-
out cradle, insert the draw-out cradle mounting screws into these two holes while lifting open the covers.
Do not lift open the cover too high. Failure to do so may result in damage to the cover.
(When lifting open the
mounting screw protection cover)
Fig. 5 Mounting screw protection cover
Draw-out cradle mounting screws
Hex head M12 (4) (not supplied)
with spring washer, flat washers (2)
and nut
Tightening torque: 41 - 52 N·m
Protrusion
Draw-out cradle
mounting screw hole
Mounting screw
protection cover
Protrusion
Draw-out cradle
mounting screw hole