S8VK-R

4

Engineering Data

Derating Curve

Mounting

Combinations with the S8VK-G

Power Boost Function

This function is possible when used in combination with S8VK-G (All

Models).

Power Boost is a function that can output the temporary repeated

boost current larger than the rated current.

However, it should meet the following four Boost current conditions.

1. Time that the boost current flows: t1

2. The maximum value of the boost current: lp

3. The average output current: lave

4. The time ratio of the boost current flow: Duty

Note: Boost current conditions

• Do not allow the boost current to continue for more than 10

seconds.

Also, do not let the duty cycle exceed the boost current conditions.

These conditions may damage the Power supply.

• Ensure that the average current of one cycle of the boost current

does not exceed the rated output current.

This may damage the Power Supply.

• Lessen the load of the boost load current by adjusting the ambient

temperature and the mounting direction.

Power supply

model

Redundant unit model

Redundancy

Higher capasity

S8VK-G015

@@

S8VK-R10

S8VK-R10

S8VK-G030

@@

S8VK-G060

@@

S8VK-G12024

S8VK-G24024

S8VK-R20

S8VK-G24048

S8VK-R20

S8VK-G48024

S8VK-G48048

Ambient temperature (°C)

A

B

C

−40 −25 −10 0 10 20 30 40 50 60 70 80

120

100

80

60

40

20

0

A: Standard mounting

B: Standard mounting, when contact mounted with S8VK-G

60°C and over: the derating is 2.5%/°C (when contact mounted

with S8VK-G)

C: Face-up mounting

50°C and over: the derating is 1.25%/°C

(B) Contact Mounting

(C) Face-up mounting

(A) Standard (Vertical) mounting

S8VK-R

POWER SUPPLY

(S8VK-G)

[A]

Ip: Boost current

Rated current

lave: Average current

t2

t1

• t1

• Ip

• lave

≤ 10 s

≤ Rated boost current

≤ Rated current

Duty=

t1 + t2

t1

× 100 [%]

≤ 30%