S/CLP/SIL842970/B/21/04/2004
®
celpac
page 3 / 4/GB
Thermal specifications .
Current according ambient temperature :
Ø
The curve "1" gives the limits of the product.
25
20
15
The temperature reached are acceptable for the compo-
nents. These values are in compliance with most of SSRs
manufacturers.
In a cabinet with a minimum of ventilation or a non perma-
nent current, these values are correct.
1
2
Ø
The curve "2" gives the limits of the product accord-
ing to EN60947-4-3 with a maximum rise temperature of
50°C (@40°C) for a permanent working and in air calm
( test during 8 hours).
10
5
Ø
For a non permanent current, you can calcule the av-
erage power = Pd x duty cycle and check the rise tempera-
ture : Tj = Pd x Rthj/a (Pd and Rthj/a are given page 2)).
The junction temperature must not exceed 125°C at the
maximum ambient temperature.The maximum current is
limited to the size of the alternistor = 25A.
0
0
5
10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85
T ambient (°C)
Ø
The thermal constant (Cth) of the product is 7
minutes. That means the rise temperature is only 63% of the
fig 2
stabilized temperature after a running time of
7 minutes.
Fig.3 Surge current : Itsm (Apeak) = f(t) for 25A models with Itsm =250A
Overload current .
1 - No repetitive Itsm is given without voltage
reapplied . This curve is used for the
determination of the protection.
250
1
200
150
2 - Repetitive Itsm is given for inrush current
with initial Tj = 70°C. In normal working , this
curve musn't be exceed. Be carefull, the
repetition of the surge current decrease the
lifetime SSR's .
No repetive surge current without voltage reapplied.
2
100
50
Repetive surge current with voltage reapplied.
0
0,01
0,1
1
10
fig 3
t(s)
Mounting and dismounting on DIN rail without any tool.
Panel Mounting
M5
M4
Mount ing
88±2mm
DIN rail connected to
protection wire (ground) .
Dismount ing
12,7mm
Ø
Warning ! semiconductor relays don't provide any galvanic insulation between the load and the mains. Always use in
conjunction with an adapted circuit breaker with isolation feature or a similar device in order to ensure a reliable isolation in the
event of wrong function and when the relay must be insulated from the mains (maintenance ; if not used for a long duration ...).
www.celduc.com
r
e
l
a
i
s
Rue Ampère B.P. 4
42290 SORBIERS - FRANCE
E-Mail : celduc-relais@celduc.com
Fax +33 (0) 4 77 53 85 51
Service Commercial France Tél. : +33 (0) 4 77 53 90 20
Sales Dept.For Europe Tel. : +33 (0) 4 77 53 90 21 Sales Dept. Asia : Tél. +33 (0) 4 77 53 90 19
CELDUC [ celduc-relais ]
