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REV.: 0/2023

PA-5

AC/DC Converter

Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)

RACM30-K/277

Series

PEAK LOAD CAPABILITY (single output only)

Parameter

Condition

Value

MTBF

according to MIL-HDBK-217F, G.B.

+25°C

>1357 x 103 hours

+40°C

>1096 x 103 hours

Design Lifetime

230VAC/50Hz and

full load

single output

5Vout

+45°C

>30 x 103 hours

others

+50°C

dual output

+40°C

>30 x 103 hours

+50°C

>17x 103 hours

-40

-20

0

20

40

60

80

90

50

100

30

24

18

12

27

21

15

9

6

3

0

Ambient Temperature [°C]

100VAC & 120VDC

120-277VAC & 133-430VDC

-40

-20

0

20

40

60

80

100

30

24

18

12

27

21

15

9

6

3

0

Ambient Temperature [°C]

50

90

100VAC & 120VDC

120-277VAC & 133-430VDC

Derating Graph

(@ Chamber and natural convection 0.1m/s)

RACM30-05SK/277

RACM30-K/277 others

P

P

= 36W

t

1

= 10s

t

2

= 50s

k

= 1.1

Pout [W]

t

1

t

2

P

p

P

nom

0

P

r

Time [s]

P

r =

30 x (t

1 + t2) - (PP x t1)

t

2 x k

P

P

= peak output power

[W]

P

r

= recovery output power

[W]

t

1

= peak time set (10s max.)

[s]

t

2

= recovery time (min. 5 x t

1 )

[s]

k

= safety factor 1.1

[ ]

Practical Example (RACM30-24SK/277):

P

r =

30 x (10 + 50) - (36 x 10)

= 26.2W

50 x 1.1

Take the RACM30-24SK/277 at 230VAC input Voltage and full load at T

AMB= 25°C ,with

natural convection.

Calculation:

Maximum Peak Power

RACM30-05SK/277

RACM30-12SK/277

RACM30-15SK/277

RACM30-24SK/277

33W

36W