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HITACHI INDUSTRIAL EQUIPMENT SYSTEMS

산업용 전동기, 가변주파수 드라이브(VFD), 교류 서보, 급수 펌프, 고압 블로워 등

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140241
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Air Circuit Breakers
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Characteristics

Compact & Modular design

  • More compact overall dimensions and light weights.
  • HITACHI ACB have been made three types of modular design creteria to facilitate their installation and integration in low voltage switch boards.

 

High breaking capacity

  • HITACHI ACB provides high breaking capacity up to 100kA

 

Safety and Convenience

  • OCR terminals are located in front
  • Modulized mechanical part and accessories
  • for easy maintenance and inspection Improved draw-out rail for easy draw-out
  • Minimized arc space
  • Molded frame

 

high functional digital type trip relay

  • Easy inspection by LCD
    -Load current value
    -Setting values of each trip characteristics
    -Fault current(Max) value
    -Tripping time
  • Self-diagnosis function
    -noEr : No error
    -Err-1 : NoMTD coil
    -Err-2 : Program error
    -Err-4 : Configuration resister error
    -Err-8 : Watch dog error
  • Self-test function
    -It is available to check whether OCR is operated normally or not by applying external power
  • Pre-alarm function
  • Contact output of the each tripping cause and LED indication
  • OCR alarm contact (AL,2a)

 

Variety of accessories

Optional accessories

  • Interlock device
    -MI (Mechanical Interlock)
  • Key interlock, ON-Lock (K2)
  • Key lock (K1)
  • ON/OFF button lock (B)
  • Door Frame (DF)
  • Door Interlock (DI)
  • UVT, UVT controller : Standard (1NO 1NC)
TYPE Operating time Rated voltage
Instantaneous type under 0.2sec AC 110, 220, 380, 460V
DC 24, 48, 110, 125V
Delay type over 0.5sec AC 110, 220, 380, 460V
DC 24, 48, 110, 125V
over 3sec AC 110, 220, 380, 460V
DC
  • Cell switch (4C,8C)
  • Shorting "b" contact (SBC, 5b max, Shorting b contact)
  • Safety shutter lock (STL)
  • Miss insertion prevent device (MIP)
  • Condenser tripping device (CTD)
  • OCR tester (OT)

 

Standard attachment of draw-out type

  • pad lock
  • Position indicator (connected, test, disconnected)
  • Counter (5-digit)
  • Lifting hook
  • Insulating barrier
  • OCR alarm contact (AL,2a)

 

 

Ratings

400A — 1600A

TYPE AK-06***C AK-08***C AK-10***C AK-13***C AK-16***C
Rated current (In max) (A) 630, 400 800 1000 1250 1600
Rated operating voltage (Ue) (V) 690 690 690 690 690
Rated insulation  voltage (Ui) (V) 1000 1000 1000 1000 1000
Frequency *2 (Hz) 50/60 50/60 50/60 50/60 50/60
Number of poles (P) 3, 4 3, 4 3, 4 3, 4 3, 4
Setting current (In) (A) OCR-II For industry In max.×1.0-0.9-0.8-0.7-0.6-0.5-0.4(7 Steps)
OCR-III *3 For industry In max.×1.0-0.9-0.8-0.7-0.6-0.5-0.4-0.3-0.2
(9 Steps)
For generator protection In max.×1.0-0.9-0.8-0.7-0.6-0.5-0.4-0.3-0.2
(9 Steps)
Rated current of neutral pole (A) 630 800 1000 1250 1600
Rated breaking capacity(Sym) (Icu) (kA) IEC60947-2 AC 690V 50 50 50 50 50
600V 50 50 50 50 50
500V
Under
65 65 65 65 65
Rated service breaking capacity (Ics) (kA) …%×Icu 100% 100% 100% 100% 100%
Rated making capacity(peak) (Icm) (kA) IEC60947-2 AC 690V 105 105 105 105 105
600V 105 105 105 105 105
500V
Under
143 143 143 143 143
Rated short-time capacity (Icw) (kA) 1 sec 65 65 65 65 65
2 sec 40 40 40 40 40
3 sec 30 30 30 30 30
operating time (t) (ms) Maximum total breaking time 40 40 40 40 40
Closing time 80 80 80 80 80
Life cycle (time) Mechanical Without maintenance 12000 12000 12000 12000 12000
With maintenance 20000 20000 20000 20000 20000
Electrical Without maintenance 3000 3000 3000 3000 3000
With maintenance 5000 5000 5000 5000 5000
Weight
(3P/4P)
(kg) Draw-out type Main body
(with cradle)
Motor charging type 66/80 67/81 67/81 67/81 67/81
Manual charging type 63/77 64/78 64/78 64/78 64/78
Cradle only 26/30 26/30 26/30 26/30 26/30
Fixed type Motor charging type 43/53 44/54 44/54 44/54 44/54
Manual charging type 40/50 41/51 41/51 41/51 41/51
Bus-bar Connection type Horizontal type *4 Standard Standard Standard Standard Standard
Vertical type Option Option Option Option Option
Closing type Motor charging type Standard Standard Standard Standard Standard
Manual charging type Option Option Option Option Option
External dimension Draw-out type (mm) H : 435, D : 479 W (3P/4P) 350/435 350/435 350/435 350/435 350/435
Fixed type (mm) H : 410, D : 375 W (3P/4P) 345/430 345/430 345/430 345/430 345/430

 

2000A — 5000A

TYPE AK-20***C AK-25***C AK-32***C AK-40***C AK-50***C
Rated current (In max) (A) 2000 2500 3200(3150) *1 4000 5000
Rated operating voltage (Ue) (V) 690 690 690 690 690
Rated insulation  voltage (Ui) (V) 1000 1000 1000 1000 1000
Frequency *2 (Hz) 50/60 50/60 50/60 50/60 50/60
Number of poles (P) 3, 4 3, 4 3, 4 3, 4 3, 4
Setting current (In) (A) OCR-II For industry In max.×1.0-0.9-0.8-0.7-0.6-0.5-0.4(7 Steps)
OCR-III *3 For industry In max.×1.0-0.9-0.8-0.7-0.6-0.5-0.4-0.3-0.2(9 Steps)
For generator protection In max.×1.0-0.9-0.8-0.7-0.6-0.5-0.4-0.3-0.2(9 Steps)
Rated current of neutral pole (A) 2000 2500 3200 2500 2500
Rated breaking capacity(Sym) (Icu) (kA) IEC60947-2 AC 690V 50 50 50 50 50
600V 65 65 65 85 85
500V Under 85 85 85 100 100
Rated service breaking capacity (Ics) (kA) …%×Icu 100% 100% 100% 100% 100%
Rated making capacity(peak) (Icm) (kA) IEC60947-2 AC 690V 105 105 105 105 105
600V 143 143 143 187 187
500V Under 187 187 187 220 220
Rated short-time capacity (Icw) (kA) 1 sec 65 65 65 85 85
2 sec 60 60 60 65 65
3 sec 60 60 60 65 65
operating time (t) (ms) Maximum total breaking time 40 40 40 40 40
Closing time 80 80 80 80 80
Life cycle (time) Mechanical Without maintenance 10000 10000 10000 10000 10000
With maintenance 20000 20000 20000 20000 20000
Electrical Without maintenance 3000 3000 3000 3000 3000
With maintenance 5000 5000 5000 5000 5000
Weight (3P/4P) (kg) Draw-out type Main body
(with cradle)
Motor charging type 95/116 96/117 98/119 244/267 244/267
Manual charging type 92/113 93/114 95/116 240/263 240/263
Cradle only 35/43 35/43 36/44 125/140 125/140
Fixed type Motor charging type 63/75 64/76 66/78 119/127 119/127
Manual charging type 60/72 61/73 63/75 115/123 115/123
Bus-bar Connection type Horizontal type *5 Standard Standard Standard Standard offer in the fixed type
Vertical type Option Option Option Standard offer in the draw-out type
Closing type Motor charging type Standard Standard Standard Standard Standard
Manual charging type Option Option Option Option Option
External dimension Draw-out type (mm) H : 435, D : 479 W (3P/4P) 485/615 485/615 485/615 960/1090 960/1090
Fixed type (mm) H : 410, D : 375 W (3P/4P) 480/610 480/610 480/610 870/1000 870/1000

Note

*1 Rated current of IEC standard
*2 Trip relay is divided into 50Hz and 60Hz. Please be careful when you order it.
*3 The generator protection relay is only available in OCR-III.
*4 For mainbody, only horizontal type is available. For cradle, vertical type is optional. In case of vertical type use of the horizontal type, the user needs to apply the vertical adapter, The vertical type is standard for 4000/500AF.
*5 For 4000/5000AF, height is 455mm

 

 

Charging method

Manual charging type

The closing coil is charged by manual charging handle. For closing, first charge the spring by using the charging handle, and then press the close button(I, ON) for closing, the open button(O, OFF) for opening

  • When closing spring is completely charged, charge indicator indicate "Charge"
  • It is mechanically locked not to press the close button(I, ON) and open button(O, OFF) simultaneously
  • Contact condition of the main circuit is shown on the(O, OFF), (I, ON) indicator.

 

Motor charging type

The closing spring is charged by a motor ON charging method or OFF charging method is available selectively.

-OFF charging method : When the breaker is opened, the closing spring is charged automatically. It can change to ON charging method by removing b(A×b) contact like beside circuit diagram

-ON charging method : The closing spring is charged automatically when the breaker is closed.It can change to OFF charging method by using b(A×b) contact. There is a contact to indicate the charging completion(TS+, TS-). Since the contact signal of charging completion switch is connected to the external terminal, It is easy to construct a circuit(ex.Automatic closing circuit) by using that contact

  • Manual charging is also available
  • With the breaker closed(I, ON), only manual charging is possible(motor charging cannot be performed)
  • With the open button(O, OFF) pressed, closing cannot be performed(electrical and mechanical lock)
  • When OFF Lock device is in use, closing cannot be worked.(electrical and mechanical lock)
  • Opening should follow at least one second after completion of charging
  • Pumping prevent circuit is included with the closing coil(electrical lock)
  • Please note that pumping prevent circuit can be reset when the voltage of input signal drops

Voltage

Reset voltage

AC

Rated voltage 85% under

DC

Rated voltage 85% under

Motor charging circuit

 

 

 

 

 

 

Note

*1 Since charging completion contact (TS+, TS-) terminal is for contact output power should not be allowed.
*2 Charging completion contact capacity is equal to that high of capacity of auxiliary contact in page 27.

Motor ratings

Rated voltage

Inrush current peak value(A)

Steady current(A)

Power consumption(W)

Charging time(sec)

AC/DC

50/60Hz

110

7

3.5

385

5 Under

220

7

3.5

770

DC

125

7

3.5

437

24

30

11

264

48

30

5.5

264

Note
*The range of operating voltage : 85-110%

 

 

Auxiliary devices

1:Pad lock(PL)

To fix a ACB into a position (Dis-connected, Test, Connected)
* Standard offer in the draw-out type

 

2:Position Indicator

To indicate the position (Dis-connected, Test, Connected)of a ACB
* Standard offer in the draw-out type

 

3:Closing Coil(CC)

  • To close the breaker by remote control
  • The coil only operates when the power is supplied continuously over 100ms
  • Power should be supplied separately from the moer charging power.
  • Electric pumping prevent circuit is built in it.

Rated voltage(V)

Operational voltage (V)

Inrush current peak value(A)

Steady current(A)

Closing time(sec)

AC/DC

50/60Hz

110

94-121

2

1

0.08 Under

220

187-242

3

1.3

DC

125

106-138

2.3

1

24

21-26V

30

3.5

48

41-53V

30

7

Note

*1 Closing time is from coil excitation to contact closing
*2 Steady current is the value at maximum rated voltage
*3 Please be careful that the pumping prevention circuit is reset when its voltage is under 85% of the rated voltage
*4 The extent of operation voltage is 85-110% of the rated voltage

 

4:Shunt coil(SHT)

  • To open the breaker by remote control
  • Use an auxiliary contact(INO) to prevent coil burnig
  • When the control power is 'OFF' at the ACB is 'ON' state, the ACB remains 'ON'
Rated voltage(V) Operational voltage (V) Inrush current peak value(A) Steady current(A) Closing time(sec)
AC/DC
50/60Hz
110 77-121 2 1 0.04 Under
220 154-242 3 1.3
DC 125 88-138 2.3 1
24 21-26V 30 3.5
48 41-53V 30 7

Note
* The extent of operation voltage is 70-110% of the rated voltage.

 

5:OCR Alarm contact

OCR alarm contact is fundamentally installed in only ACB with trip relay.
When the ACB is tripped by the OCR operation, electrical signal flows through the OCR alarm contact for remote supervisory(INO).

Contact type

TYPE OCR-II OCR-III
Operational type Momentary operation type (Under 15ms) Magnetic maintenance type
Formation of contact 2NO 2NO

 

Operating condition of contact

Condition of circuit breaker Cause of trip Condition of "a" contact
TRIP Long-time delay trip,
Short-time delay trip,
Instantaneous-time delay trip,
Ground fault trip
ON
Trip button,
Shunt trip coil (SHT),
Undervoltage trip (UVT)
OFF
ON   OFF
OFF   OFF

 

Pumping prevent circuit

 

Trip coil circuit

 

Contact capacity

TYPE Capacity
Ratings AC 250V 5A
DC 30V 5A
Rated current 5A
Maximum contact voltage AC 380V
DC 125V
Maximum contact current 5A
Minimum applicable load DC 5V 10mA

 

 

HITACHI INDUSTRIAL EQUIPMENT SYSTEMS
산업용 전동기, 가변주파수 드라이브(VFD), 교류 서보, 급수 펌프, 고압 블로워 등
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