SALC-212-174
10
3.2 Connections
Please perform connection after referring to the following wiring diagram.
● Connection drawing (
７
)
(1) 1φ2W，Analog output. (2) 1φ3W，Analog output.
External operation input
AUX. SUPPLY
Analog output 3
Analog output 1
Analog output 2
Alarm output
Analog output 1
Analog output 2
Analog output 3
Alarm output
External operation input
AUX. SUPPLY
(3) 3φ3W，Analog output.
Analog output 1
Analog output 2
Analog output 3
Alarm output
External operation input
AUX. SUPPLY
● Caution on connection
(1)
Mount the terminal cover without fail for safety after the end of connections.
(2)
Separate the input wiring and output wiring from each other without fail, and take a preventive measure
against malfunction due to external noises.
(3)
Connect the grounding terminal E (No. 7 terminal) to the ground without fail for enhancing the shield effect.
Keep the grounding resistance between the grounding terminal and the ground to be lower than 100Ω.
(4)
Keep a distance of more than 30cm between this unit and the circuit breaker as well as between this unit
and the relay contact signal line.
(5)
No protection is necessary for this unit even if the transmission line may be affected by an induced lightning
surge or the like when transmitting an analog output to the receiver. Mount an about 500V SPD (arrester)
or the like between the line surge protector and the ground as well as between the transmission line and
the ground on the receiver side for the purpose of protecting the devices on the receiver side.
(6)
It is recommended to mount a surge killer outside when connecting an inductive load to the alarm output.
If no surge killer is mounted, the contact life may shorten.
Note(
６
) Analog output, alarm output, external
operation input is an option.
Note(
７
) In case of low-voltage circuit,
secondary side earthing of CT is
unnecessary.
