Daiichi Electronics SQLC-110L - Page 15

SQLC-214-097
14
● Schematics in the leakage monitor of low-voltage circuit (
20
)(
22
)
(1) 1φ2W (N-phase earth) (2) 1φ3W (N-phase earth)
LOAD
ZCT
CT
NU
21
LOAD
ZCT
CT
21
WUN
( )
( )
EXT.INPUT2
EXT.INPUT1
18
17
19
( )
ANALOG OUTPUT3
CONTACT OUTPUT1
CONTACT OUTPUT2
ANALOG OUTPUT4
ANALOG OUTPUT1
ANALOG OUTPUT2
17
( )
21
22
24
28
26
27
29
23
25
16
20
18
17
19
AUX.SUPPLY
( )
( )
EXT.INPUT2
EXT.INPUT1
18
17
19
( )
ANALOG OUTPUT3
CONTACT OUTPUT1
CONTACT OUTPUT2
ANALOG OUTPUT4
ANALOG OUTPUT1
ANALOG OUTPUT2
17
( )
21
22
24
28
26
27
29
23
25
16
20
18
17
19
AUX.SUPPLY
(3) 3φ3W (V-phase earth) (4) 3φ3W (No earth)
LOAD
ZCT
CT
WVU
LOAD
ZCT
CT
WUV
21
21
17 17
EVT
ANALOG OUTPUT2
ANALOG OUTPUT1
ANALOG OUTPUT4
CONTACT OUTPUT2
CONTACT OUTPUT1
ANALOG OUTPUT3
( )
17
( )
19
18
( )
( )
17
EXT.INPUT1
EXT.INPUT2
25
26
28
29
27
24
23
20
22
21
18
19
17
16
AUX.SUPPLY
ANALOG OUTPUT2
ANALOG OUTPUT1
ANALOG OUTPUT4
CONTACT OUTPUT2
CONTACT OUTPUT1
ANALOG OUTPUT3
( )
17
( )
19
18
( )
( )
17
EXT.INPUT1
EXT.INPUT2
25
26
28
29
27
24
23
20
22
21
18
19
17
16
AUX.SUPPLY
Note(
17
) Analog output, contact output, external operation input is an option. Zero-phase current input product
will be only with leakage current measurement.
Note(
18
) Can change to external reset function or external display change function by setting.
Note(
19
) Can choose the contact output among the pulse output, the alarm output, the CPU error output. (Designation)
・Combination of contact output
Contact output 1 Contact output 2
Pulse＋Alarm Pulse output Alarm output
Alarm×2 Alarm output 1 Alarm output 2
Pulse×2 Pulse output 1 Pulse output 2
Pulse＋CPU error Pulse output CPU error output
Alarm＋CPU error Alarm output CPU error output
Note(
20
) In case of low-voltage circuit, secondary side earthing of VT and CT is unnecessary. And, VT is unnecessary
in case it used 110V or direct 220V.
Note(
21
) Voltage input is needed at the time of Igr measurement in a short circuit electric current.
Note(
22
) A voltage input and a leakage input are not insulated. Please use it combining ZCT.