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Example
How a MAXIMUM CURRENT RELAY (RHI) works:
Supposing it is to control a load with the following ratings:
I
= 5 A
n
V
= 230 V ac (rated regular operating voltage)
n
I
= 6 A
max
1° Connect as shown in diagram (for I
N.B.: Normally, connect terminals:
7-10 if I
7-11 if I
7-12 if I
12
(rated regular operating current)
(current at which RHI relay trips)
F
N
C
7
8
9
10
11 12
RHI
1
2
3
4
Power supply
Output relay
Allarme
Tensione
voltage
(alarm)
di alimentazione
230 Vc.a.
230 V ac
is ≤ 2 A
max
is > 2 A and ≤ 5 A
max
is > 5 A and ≤ 10 A
max
max
Line current to be controlled
Rete da controllare I
I
6A
max.
A
5
6
= 6 A).
Load
6A
Carico
max