Thiết bị điện ATS mạng điện trung áp

OSS Series

AUTOMATIC
TRANSFER
SWITCHES

SMALL

STRONG

SAFE

SMART


Outstanding technology captivates the world!
Superior Quality satisfies our customers!

Contents
Company History

3

OSS

4

- T, TB Type (60~400A)
Information to Order (
Features (
Specification (

Outline Dimension (
Wiring Diagram (

OSS - TN, TBN Type (60~600A)
Information to Order (
Features (

7

External View (
Application and Selection (
Specification (
Outline Dimension (
Wiring Diagram (

2 I Automatic Transfer Switches

OSS - PC Type (400~6300A)
Information to Order (
Features (
Specification (
Outline Dimension (
Wiring Diagram (

12

ATS Controller
Specification & Function (
Wiring Diagram (
ACD21, ACSD, ACD

21

Technical Details (

)

24

Safety Manual (

)

26


Company History
Dec. 1986
Oct. 1987
Feb. 1990

Established O-Sung Industrial Company.
Became a member of Korea Electrical Manufacturers Association (KOEMA).
Awarded two prizes for product development & excellent export records
from KOEMA.
Mar. 1990 Selected as "Intensive Technological Enterprise" by the Ministry of
Commerce, Industry and Energy.
Sep. 1993 Acquired "Quality Product" for Automatic Transfer Switch by the
Ministry of Commerce, Industry and Energy.
Nov. 1995 Awarded the Presidential Prize in the contest for Quality Control Team.

Jun. 1995 Became a member of Korea International Trade Association (KITA).
Nov. 1995~ Acquired Certificate of Quality Registration from Korea Standards
Association (KSA 9001, ISO 2000)
Apr. 1999 Acquired Certificate of Short Circuit Rating for ACB(2000A, 50kA)
from ASTA Certification Services.
Feb. 2000 Acquired Certificate of Short Circuit Rating for ACB(1600A, 3200A, 5000A
50kA) from ASTA Certification Services.
May. 2000 Certified by Taiwan Power Corporation(TPC) for ACB(1600~5000A 65kA).
Jul. 2002 Acquired CE mark for Automatic Transfer Switch
Oct. 2005 Passed Chinese Compulsory Certification Test for ACB in China.
Oct. 2005 Registered in the Small and Medium Business Administration as a Venture
Enterprise.
Aug. 2006 Acquired CB test Certificate for Air Circuit Breaker with electronic
overcurrent protection from Korea Testing Laboratory(KTL).
Nov. 2006 Acquired EC- Attestation of Conformity for Air Circuit Breaker with
electronic overcurrent protection from Product Service in Germany.

Automatic Transfer Switches I

3


OSS - T, TB Type

ATS(60~400A)

Information to Order
A Rated Current

OSS - 6

B Type

06

1

2

4

60A

100A

200A

400A

C Number of Poles

T : T-Type
TB : TB-Type

- - PA B C D

D Operating Voltage

2 : 2P
3 : 3P

4 : 4P

A1 : AC 110V
A2 : AC 220V
D1 : DC 110V
D2 : DC 125V

Features
Certain operation by latching mechanism
High current capability with low operating current
Excellent open and close performance
Compact and light weight.
Suitable for emergency power supply facilities.

Specification
606 -T, 606 -TB
61 -T, 61 -TB

TYPE
Rated Operational Voltage

Ue

Rated Current

Ie

60A, 100A

200A

400A

60A, 100A

200A

400A

Double Throw

Kind of Throw

Front(T), Back(TB)

Connection
Number of poles
Weight
Rated Short-Time Withstand Current (1sec)
Icw
Short-Circuit Making Capacity
Icm
Switching Capacity

2P

3P

4P

2P

3P

4P

2P

3P

4P

14kg

16kg

18kg

16kg

19kg

22kg

16kg

19kg

22kg

5kA

10kA

12kA

7.65kA

17kA

24kA

AC - 33B (6Ie making / 6Ie breaking cos = 0.5 )
DC - 31B (1.5Ie making / 1.5Ie breaking L/R = 1ms )
60 times per an hour

Switching Frequency
Operating Current

Operating Time

Cautions

64 -T, 64 -TB

AC 600V, DC 125V

Neutral Phase Current

Number of Operating

Cycles

62 -T, 62 -TB

DC 110V ~125V

14A

14A

14A

AC 100V ~110V

7A / 14A

7A / 14A

7A / 14A

AC 200V ~ 240V

3.5A / 7A

3.5A / 7A

3.5A / 7A

Change - over time

80 ms

Opening time

60 ms

Without Current

10,000

With Current

5,000

1. For complete operation, Be sure to provide control source for more than 0.5sec.
2. If the control sources are supplied to A side and B side at the same time, the switching coil can be damaged.
3. Control Relay should be selected considering sufficient contact capacity to withstand against more than control current.
1.
2.
3.

4 I Automatic Transfer Switches


OSS - T, TB Type

ATS(60~400A)

Outline Dimension
OSS - T Type

Operating circuit terminal
Manual handle inlet
A Power source side main circuit terminal
A
Load side main circuit terminal
B Power source side main circuit terminal
B
Change over indicator

OSS - TB Type

PANEL CUT

Automatic Transfer Switches I

5


OSS - T, TB Type

ATS(60~400A)

Wiring Diagram
AC 110V, AC 220V

DC 110V, DC 125V
'A'-Power Source

A1

ATS

B1

'A'-Power Source

a1 b1 a3 b3

A1

ATS

Xb

Xa

a1 b1 a3 b3

B1

Xa

Xb

To Load
C1

To Load

C2

Si

C1

C2

A2

B2

Si

A2

B2

a 2 b2 a 4 b4

a2 b2 a4 b4

'B'-Power Source

'B'-Power Source

A1 , A2

A-Power Closing Terminal

B1 , B2

B-Power Closing Terminal

a1, a2, a3, a4

A-Power Aux Switch

C1

A-Power Closing Coil

b1, b2, b3, b4

B-Power Aux Switch

C2

B-Power Closing Coil

Si

Control Switch

Xa , Xb

Silicon Rectifier

Typical Operating Circuit
Using a changeover switch

Standard

MANU

Using a timer

AUTO

A1

B1

T - TYPE
TB - TYPE
27

A2

84

B2

from B-power source

84

27
84

A1

B1

T - TYPE
TB - TYPE
27

A2

84

from A-power source

from B-power source

27

from A-power source

from B-power source

from A-power source

27

B2

27

T1

84

A1

27

T1

84

A2

T2

Wiring Diagram
DC Operating and Control
P

27X

C/S

84X

B1

T - TYPE
TB - TYPE

27T

84X

ATS
AUX

27T
A1

27X

ATS
AUX

84T

A2

R

B2

G

27T

AUTO 84T

27X

AUTO

C/S

MANU 27X
27X

C/S

84X

ATS
AUX

R

G

B1

T - TYPE
TB - TYPE
27T

ATS
AUX

27T
A1

27X

84X

84T

A2

DC control source

C/S

from B-power source

27X

AUTO

from A-power source

from B-power source

from A-power source

AUTO 84T

MANU

MANU 27X

MANU
27T

B2

N

Source-B Operating Relay

27X

Source-A Operating Relay

84X

27T

27X Operating Delay Relay

84T

84X Operating Delay Relay

Automatic , Manual

C/S

Control Switch

AUTO,MAN

6 I Automatic Transfer Switches

B1

T - TYPE
TB - TYPE

27

AC Operating and Control

T2

B2


OSS - TN, TBN Type

ATS(60~600A)

Information to Order
A Rated Current
06
60A

1

2

OSS - 6

B Type
4

6

100A 200A 400A 600A

TN : TN-Type
TBN : TBN-Type

C Number of Poles
2 : 2P
3 : 3P
4 : 4P

- - PA B C D

D Operating Voltage
A1 : AC 110V
A2 : AC 220V
D1 : DC 110V
D2 : DC 125V

Features
Off position stop method
In case with the uninterrupted power system, it is
recommended to stop at the OFF position set by tripping

mechanism for the stable power. Instantaneous transfer without
stop can be also performed by operating signal.
A Off B, B Off A, and A Off A, B Off B
And also, instantaneous transfer can be performed by operating
signal.

O

One-Coil Application
One-coil is employed for the transfer to normal power source
and emergency power source.

Compact & Lightweight Design
Compact & lightweight design makes the minimized mounting
space and convenient installation.

Excellent Breaking Capacity
Designed for suffciently large chamber to extinguish the arc
when transferred. Arc-extinguishing area is designed for
convenient inspection and maintenance.

Protection against the remaining power source
Time delay to transfer is available so that the remaining power
can not be induced to the main power to protect the load.

Construction for Safety
For safe operation, molded construction is employed on
breaking parts. And also, latching indicator is prepared to
indicate the operating condition.

External View
Earthing Terminal
Manual Operating Shaft (Anti-Clockwise)
Circuit Diagram
Name Plate
Trip Button
Selective Button for “B” Power-Closing
On/Off Indicator
Circuit Terminal for “A” Power
Contacts
Arc-Extinguishing Chamber
Aux Switch
Circuit Terminal for “B” Power
Control Circuit Terminal Block
Main Circuit Terminal for Load
Amateur for Closing Coil

Automatic Transfer Switches

I7


OSS - TN, TBN Type

ATS(60~600A)

Application and Selection
Applicable Standards
IEC 60947-6-1
KSC 4504

JEM 1038
KSC 0703

UL 1008

IEC 60947-6-1
KSC 4504

JEM 1038
KSC 0703

UL 1008

Control Order
It is recommended to give more than 0.5 sec for operation,
though transfer time is completed within 0.3 sec.

Interlock
Interlocking is required for control circuit so that control order
should not suppy to both A power source side and B power
source side simultaneously. For TN type ATS, Sequence setting
is required so that closing or tripping order should not supply in
the same direction.

Control Circuit
ATS is designed so that operation current should be off by
internal switch after completion of operation. If operation current
is off with auxiliary switch of the unit, it may cause a malfunction.

Specification
606 -TN, TBN
61 -TN, TBN

TYPE
Rated Operational Voltage

Ue

Rated Current

Ie

AC 600V, DC 125V
60A, 100A
60A, 100A

Neutral Phase Current

Number of poles
Weight
Rated Short-Time Withstand Current (1sec)
Icw
Short-Circuit Making Capacity
Icm
Switching Capacity

200A

400A, 600A

2P

3P

4P

2P

3P

4P

2P

3P

4P

14kg

16kg

18kg

16kg

19kg

22kg

16kg

19kg

22kg

5kA

10kA

12kA

7.65kA

17kA

24kA

AC - 33B (6Ie making / 6Ie breaking cos = 0.5 )
DC - 31B (1.5Ie making / 1.5Ie breaking L/R = 1ms )
60Time / Hour

Switching Frequency
Operating Current

DC 110V ~ 125V

6A

6A

7A

AC 100V ~ 110V

3A / 6A

3A / 6A

3.5A / 7A

AC 200V ~ 240V

1.5A / 3A

1.5A / 3A

2A / 3.5A

DC 110V = 2.5A, AC 110A = 2.5A, AC 220V = 1.5A

Trip Coil Current
“A” POWER
“B” POWER

Cautions

400A, 600A

Front(TN), Back(TBN)

Connection

Number of Operating
Cycles

200A
Double Throw

Kind of Throw

Operating Time

64 -TN, TBN
66 -TN, TBN

62 -TN, TBN

Making

55 ms

55 ms

60 ms

Breaking

20 ms

20 ms

25 ms

Making

80 ms

80 ms

90 ms

Breaking

20 ms

20 ms
10,000

25 ms

Without Current
With Current

5,000

1. For complete operation, Be sure to provide control source for more than 0.5sec.
2. When control source will be provided to A side and B side simultaneously, Coil may be damaged.
3. Control Relay should be selected considering sufficient contact capacity to withstand against more than control current.

1.
2.
3.

8 I Automatic Transfer Switches


OSS - TN, TBN Type

ATS(60~600A)

Outline Dimension
60A, 100A

200A

400A, 600A

606-TN, 61-TN

62-TN

64 -TN, 66-TN

* Arc space for main circuit
- 30mm for AC 220V
- 60mm for AC 660V

Automatic Transfer Switches I

9


OSS - TN, TBN Type

ATS(60~600A)

Outline Dimension
606-TBN~66-TBN

* Arc space for main circuit
- 30mm for AC 220V
- 60mm for AC 600V

PANEL CUTTING

10 I Automatic Transfer Switches

TERMINAL THICKNESS


OSS - TN, TBN Type

ATS(60~600A)

Wiring Diagram

Typical Operating Circuit
Standard

Using a changeover switch

Using a timer

Using a condensor tripping device

Automatic Transfer Switches I

11


OSS - PC Type

ATS(400~6,300A)

Information to Order

OSS - 6

- - P- A B C D E

A Rated Current
08

10

800A

1000A

12

16

1250A 1600A

B Type
PC

20

25

2000A 2500A

32

40

50

63

3200A

4000A

5000A

6300A

C Number of Poles D Operating Voltage
: Standard

3 : 3P
4 : 4P

Features
One coil mechanism
One coil mechanism is applied.

Transfer indicator provided
Transfer indicator is fitted to indicate the transfer status.

Easier busbar arrangement
If the ATS is installed with the ACB in switchgear, Busbars can
be easily arranged.

Fixed type & Drawout type available
Fixed type and Drawout type are available for customer's
convenient applicaion.

Quick replacement of ATS
If malfunction occurs, drawout type of ATS can be changed
within 5 minutes.

Perfect transfer mechanism
By spring transfer mechanism, ATS can be completely and
perfectly transferred. There will be NO unattached position in
any case.

Sufficient current capacity
Sufficient current carrying contacts are designed to withstand
against over current.

Minimized opening & Closing impact
Opening and closing impact is minimized.

12 I Automatic Transfer Switches

A1 : AC 110V
A2 : AC 220V
D1 : DC 110V
D2 : DC 125V

E

Mounting System
F : Fixed
D : Draw out


OSS - PC Type

ATS(400~6,300A)

Specification
TYPE
Rated Voltage

Ue

Rated Current

Ie

608-PC

610-PC

800A

1000A

800A

1000A

616-PC

620-PC

1250A

1600A

2000A

1250A

1600A

2000A

AC 600V, DC 125V

Neutral Phase Current

Double Throw

Kind of Throw

Back

Connection
Number of Poles
Weight

3P

4P

3P

4P

3P

4P

3P

4P

3P

4P

Fixed

55kg

65kg

55kg

65kg

60kg

70kg

65kg

75kg

75kg

90kg

Drawout

80kg

95kg

80kg

95kg

90kg

105kg

95kg

110kg

110kg

140kg

Rated Short-Time Withstand Current (1sec)

25kA

25kA

30kA

35kA

40kA

52.5kA

52.5kA

63kA

73.5kA

84kA

Icw
Short-Circuit Making Capacity
Icm
Switching Capacity

AC - 33B (6 Ie making / 6 Ie breaking cos = 0.5 )
DC - 31B (1.5 Ie making / 1.5 Ie breaking L/R = 1ms )
60Time / Hour

Switching Frequency
Operating Current

Operating Time
Number of Operating
Cycles

Cautions

20Time / Hour

45A

50A

65A

AC 100V ~ 110V

23A / 45A

25A / 50A

33A / 65A

AC 200V ~ 240V

15A / 30A

20A / 40A

25A / 50A

Change - over time

120 ms

Opening time

90 ms

Without Current
With Current
1. For complete operation, Be sure to provide control source for more than 0.5sec.
2. When control source will be provided to A side and B side simultaneously, Coil may be damaged.
1.
2.

Rated Voltage

Ue

Rated Current

Ie

625-PC

632-PC

2500A

3200A

2500A

3200A

Number of Poles

4000A

5000A

6300A

4000A

5000A

6300A

3P

4P

3P

4P

3P

4P

3P

4P

3P

4P

Fixed

75kg

90kg

80kg

100kg

145kg

180kg

160kg

200kg

160kg

200kg

Drawout

110kg

140kg

125kg

155kg

220kg

275kg

245kg

305kg

245kg

305kg

Rated Short-Time Withstand Current (1sec)
Icw
Short-Circuit Making Capacity
Icm
Switching Capacity

50kA

50kA

65kA

65kA

65kA

105kA

105kA

143kA

143kA

143kA

AC - 33B (6 Ie making / 6 Ie breaking cos = 0.5 )
DC - 31B (1.5 Ie making / 1.5 Ie breaking L/R = 1ms )
10Time / Hour

Switching Frequency

Number of Operating
Cycles

663-PC

Back

Connection

Operating Time

650-PC

Double Throw

Kind of Throw

Operating Current

640-PC
AC 600V, DC 125V

Neutral Phase Current

Weight

10Time / Hour

DC 110V ~ 125V

TYPE

Cautions

612-PC

DC 110V ~ 125V

65A

80A

AC 100V ~ 110V

33A / 65A

40A / 80A

AC 200V ~ 240V

25A / 50A

33A / 65A

Change - over time

120 ms

Opening time

90 ms

Without Current
With Current
1. For complete operation, Be sure to provide control source for more than 0.5sec.
2. When control source will be provided to A side and B side simultaneously, Coil may be damaged.
1.
2.

Automatic Transfer Switches I

13


OSS - PC Type

Outline Dimension

ATS(800~6,300A)

800~1600A Fixed
unit : mm

OSS-608~610-PC

OSS-612-PC

OSS-616-PC

14 I Automatic Transfer Switches


OSS - PC Type

ATS(800~6,300A)

2000~3200A Fixed

Outline Dimension

unit : mm

128

530

341

381

431

OSS-620~625-PC
381

104

53

69
507

OSS-632-PC
381

104

79

53

521

Automatic Transfer Switches I

15


OSS - PC Type

ATS(800~6,300A)

4000~6300A Fixed

Outline Dimension

unit : mm

380

227(3P)

380

342(4P)

432

381

39

530

70

834
123
1,064(4P)
451

1,096(4P)

OSS-640-PC
381

70

256

256

247

282

53

69

527

OSS-650~663-PC
256
70

256

381
247

282

53

79
541

Panel cutting (Fixing hole)

16 I Automatic Transfer Switches

158


OSS - PC Type

Outline Dimension

ATS(800~6,300A)

800~1600A Draw Out
unit : mm

OSS-604~610-PC

OSS-612-PC

OSS-616-PC

Automatic Transfer Switches I

17


OSS - PC Type

Outline Dimension

ATS(800~6,300A)

2000~3200A Draw Out
unit : mm

OSS-620~625-PC

OSS-632-PC

18 I Automatic Transfer Switches

OSS - PC Type

Outline Dimension

ATS(800~6,300A)

4000~6300A Draw Out
unit : mm

OSS-640-PC

OSS-650~663-PC

Automatic Transfer Switches I

19


OSS - PC Type

ATS(800~6,300A)

Wiring Diagram
AC 110V, AC 220V
A1

B1

C1

DC 110V, DC 125V

'A'-Power Source
a1

C2

a3

b1

b3

A1

MG1 MG2

A2

Xb

'A'-Power Source
a1

C2

Xa

CC

MG1 MG2

C1

a3

b1

b3

MG1 MG2
Xa

Si

B1

MG1 MG2

To Load

MG1

MG1 MG2

a2

B2

a4

b2

Xb

CC

To Load

b4

A2

MG2

a2

B2

a4

b2

b4

'B'-Power Source

'B'-Power Source

A1 , A2

A-Power Closing Terminal

AX , BX

Control Switch

B1 , B2

B-Power Closing Terminal

MG1 , MG2

Magnetic Coil

CC
Si

Closing Coil

a1, a2, a3, a4

A-Power Aux Switch

Silicon Rectifier

b1, b2, b3, b4

B-Power Aux Switch

Typical Operating Circuit
Standard

Using a changeover switch

Using a timer

MANU

AUTO

B1

C2

C1

PC - TYPE
27

B2

A2

84

from B-power source

A1

84

A1

B1

C1

C2

PC - TYPE
27

A2

84

B2

from A-power source

84

27

from A-power source

27

from B-power source

from B-power source

from A-power source

27
T1

84

27

A1

B1

27

T1

84

A2

T2

B2

27

Wiring Diagram
AC Operating and Control

DC Operating and Control
P

MANU

27X
84X

ATS
AUX

ATS
AUX

27T
A1

B1

C1

C2

PC - TYPE
R
27X

27T

84X

84T

A2

B2

G

27

AUTO 84T

27

C/S

AUTO

MANU 27
27

C/S

84X

ATS
AUX

ATS
AUX

R

G

27
A1

B1

C1

C2

PC - TYPE
27X 27T 84X 84T

A2

B2

DC control source

27

MANU

27X C/S

from B-power source

AUTO

AUTO 84T

from A-power source

from B-power source

from A-power source

MANU
27T

N

27X

Source-A Operating Relay

84X

Source-B Operating Relay

27T

27X Operating Delay Relay

84T

84X Operating Delay Relay

Automatic , Manual

C/S

Control Switch

AUTO,MANU

Caution : More than 2.0mm2 power cable used for less than 1,600A ATS.
More than 3.5mm2 power cable used for more than 2,000A ATS.

20 I Automatic Transfer Switches

C1

PC - TYPE

T2

C2


ATS Controller

ACD21 / ACSD

External View
B-power source indicating LED for Emergency
A-power source indicating LED for Utility
ATS A-power transfer status indicating LED
SYC(In-phase Monitor) indicating LED
Selection switch of A-power source
Selection switch of B-power source
ATS B-power transfer status indicating LED
Selection switch of automatic or manual

Specification
Rated operating voltage : 220VAC
Frequency : 50 / 60Hz
Contacts capacity for ATS control : AC250V, 10A
(No-load contacts)
Contacts capacity for Abnormal power source : AC250V,
10A (No-load contacts)

Basic Function
Automatic or manual ATS control
Indicating lights for A-power (Utility), B-power (Emergency)
and ATS transfer status
- Power source : A-power (Green LED), B-power (Red LED)
(Displayed when voltage is above 85%)
- Transfer status : A-power (Green LED), B-power (Red LED)
Manual operation buttons
- For A-power(Utility) : Green

- For B-power(Emergency) : Red
- Note : Built-in LED is on for selective button
Setting for automatic transfer time
- Time setting at rear side to avoid unnecessary setting change
- Variable time settings (0~30sec)
While timer is working, indicating lamp for transferable ATS
is flickering
Detection for open phase of Utility power source
(For 3 4W, 220/380VAC only)
Detecting the power failure, low voltage and abnormal
condition of Utility source, the ACD sends the engine
starting signal to the Generator.

In-phase Monitor

on
Opti

On & Off of In-Phase Monitor can be selected by selection switch
- When In-Phase Monitor is selected, Transfer is made manually
or automatically when synchronized.
- When In-phase Monitor is not selected, synchronizing
indication lamp is not on.
When synchronized, Yellow LED is flickered.
When synchronized more than 3 cycles, Tranfer will be made.
Under the manual mode, when the selection button is
selected for Utility or Generator, Built in LED will be
flickering until synchronized.

Ordering Information

ACD21 (ATS control device) : Basic Function
ACSD (ATS control synchronizing device) : Built-in In-phase Monitor

-

-

on
Opti
-


ATS Controller

ACD21 / ACSD

Wiring Diagram
3 4W 380/220V

OSS

3 4W 220/127V

- T, TB Type

OSS - TN, TBN Type

OSS - PC Type

Outline Dimension

22 I Automatic Transfer Switches

3 3W 220V


ATS Controller

ACD

Controller

Specification
Rated operating voltage : 220VAC
Frequency : 50 / 60Hz
Contacts capacity for ATS control : AC250V, 10A
(No-load contacts)
Contacts capacity for Abnormal power source : AC250V,
10A (No-load contacts)
Fitment : Front Type

Basic Function
Automatic or manual ATS control
Built-in indicator for A-power (Utility), B-power (Emergency)
and ATS transfer status
- Power source : A-power (Green LED), B-power (Red LED)
(Displayed when voltage is above 85%)
- Transfer status : A-power (Green LED), B-power (Red LED)
Manual operation buttons
- For A-power(Utility) : Green

- For B-power(Emergency) : Red
- Note : Built-in LED is on for selective button
Setting for automatic transfer time
- Transferring time setting is available at rear side to avoid
unnecessary touch.
- Variable time settings (0~30sec)
While timer is working, indicating lamp for transferable ATS
is flickering
Detection for open phase of Utility power source
(For 3 4W, 220/380VAC only)
Monitering for power failure, and low voltage of A power and
B power .

-

Wiring Diagram
OSS - PC Type

OSS - TN, TBN Type

OSS

- T, TB Type

PANEL CUTTING : W157

H131 (unit:mm)


Technical Details

Standard Operating Conditions
Ambient Temperature: -5 C~+40 C(but, the average temperature for 24 hours shall be lower than +35 C)
Altitude: Below 2000m
Environmental conditions
Relative humidity shall be less than 85% at max. temp. +40 C, less than 90% at 20 C
It shall not be allowed to use or store within the area of petrochemicals, ammonia, and corrosive gas.
Storage Temp.: -20 C~+60 C(but, the average temperature for 24 hours shall be lower than +35 C)

Applicable current by the temperature
Under the environment with over than 40 , please note the rating current as follow.

Rated current
Ambient
temperature

Note) IEC 60947-1 Standard is applied to the data for 40 C.

Bolt tightening torque(for nut)

Selection of TR Capacity
TR capacity should be selected more than the value
calculated by the following formula.
Operation Voltage x Operation Current x 0.5 = ( )VA
e.g.) Operation Voltage AC 220V, Operation Current 4A
220 x 4 x 0.5 = 440VA, TR capacity of more than 440 VA is
recommended.

Selection of Control Relay
The capacity of UVR, Operating Relay and Timer contactor

should be higher than ATS operating current.
Note : If the control power source is not stable, it is
recommended to use Automatic Voltage Regulator.

24 I Automatic Transfer Switches


Automatic Transfer Switches I

25