External Connection - Mitsubishi Electric CBV2-A01D1 Instruction Manual

5.2 External connection

(1) Connection diagram
Figures 5.4 to 5.5 show examples of input circuit (AC circuit) connection, Figure 5.6 an example of
control circuit (DC circuit) connection and Figure 5.7 a terminal arrangement.
In the terminals, M3.5 screws should be used and wires of 2 mm
used.
(2) Precautions for wiring work
a. Important facilities should be provided with fail safe measures such as dual system to improve
reliability of the facilities.
b. Effects of external surge
Some type of surge with a certain condition may inversely affect the relay. If so, take it into account
to install MF type surge absorbers made by TM T&D.
c. Guarantee of AC auxiliary power supply against power interruption
The AC auxiliary power supply of the relay is not guaranteed against power interruption. When
you do not have an
manufactured by TM T&D or
d. Inrush current of auxiliary supply
Since inrush current may flow in the relay when the auxiliary power supply is turned on as shown
in the figure below, make consideration of this point when selecting the breaker for the auxiliary
power supply circuit.
Input voltage
Input current
e. Trip circuit
Only the contacts X
to X can not be used for the trip circuit. (If used, the contact may burn).
3
Connect the pallet contact (52a) of the circuit breaker to the trip circuit.
f. Self-diagnosis output circuit
The self-diagnosis output contact is so configured that the auxiliary relay can be energized (break
contact) with normal result of monitoring, in order to be able to continue monitoring even if the
AC power source, use an AC/DC converter of CPS1 type
uninterruptible
uninterruptible
Inputting
Ip
Approx.
2ms
Figure 5.3 Inrush current of auxiliary power supply
and X can be used for the trip circuit. Please keep in mind that the contacts X
4 5
2
power source (UPS) that is commercially available.
Input voltage
0V
DC
AC
0V
20
or less are recommended to be
Inrush current Ip
110V Approx. 20A
220V Approx. 55A
100V Approx. 25A
220V Approx. 65A
PCKN-OIL738
0