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SVC820D-05B

CERAMIC SURGE ABSORBERS (VARISTORS)

Unspecified 

CERAMIC SURGE ABSORBERS (VARISTORS)

SVC

■ Application notes

1. Overcurrent protection

When surges exceed the rating for the SVC, short-circuits or

damages can be expected. Take following precautions.

2.Installation

① When operated at location near heating element or exp-

osed to direct sun light, confirm that the the ambient

temparature range.

② When operated in dusty or dirty locations, or exposed to

corrosive atomospheres, or where metallic powders or salt

can be expected, be sure to mount within a protective enclo-

sure.

3. Molding

When shielding the SVC in a resin molding, take a note of the

materials used and temperature, since they influence the

reliability. For further information please contact SAMWHA

4.Current, power and energy rating vs, temperature

① Connect the SVC at a position nearer to the equipment

than the overcurrent protection device“Ⅰ”(fuse, MCCB) as is

shown in the diagram.

When the SVC is shorted, the overcurrent protection device

“Ⅰ”operates (trips or blow off the fuse).

② If the overcurrent protection device“Ⅰ”can not be in-

stalled in“Ⅰ”position, connect a fuse at“Ⅱ”position. Select

fuse rated current for the SVC referring to the following table.

SVC

05A

05B

Applicable fuse

rated current(A) 1 to 2

07A 10A

14A

20A

07B 10B

14B

20B

2 to 3 3 to 5 3 to 10 5 to 15

③ When“Z2”SVC is connected between the equipment and

ground install an ELCB (Earth Leakage Circuit Breaker). If

not possible, connect a fuse or thermal fuse at“Ⅲ”position.

5. Electrical Characteristics

Operating ambient temperature

Storage temperature

Voltage temperature coefficient

Insulation resistance(at500V)

-40℃ to + 85℃

-40℃ to + 125℃

-0.05%℃

Over 1000MΩ

■ Recognized standards

Standard

Date

Content

UL 1449 93.03.03

Transient Voltage

surge suppressors

UL

UL 1414 88.05.10

UL 497B 93.07.06

CAS

C22.2

NO.1-M

1981

93.07.27

ISO 9002

94.12.15

Across-The-Line

Components

Protectors for data

communication

and fire alarm circuirt

Varistor for Across

-The-Line use as

transient protection

on 120Vac system

Applicable SVC series

Cord connected

and Direct Plug in

Type Equipment

05Series

07Series

10Series

14Series

20Series

Pemanently

connected type

equipment

125V AC

250V AC

10Series

14Series

20Series

SVC 201D - □A

~SVC 391D - □A

SVC 391D - □A

~SVC 182D - □A

SVC 180D - □~SVC 821D - □

File No.

E151195

E97754

E154171

125V AC

SVC 201D - □A

~SVC 182D - □A

LR78923

KRQ-007/94

58

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