CARLO GAVAZZI DEA71 Installation Instructions

Earth leakage monitoring relay
DEA71
DEB71
Connections
CURRENT
SENSOR
µ µ
12 14 22 24
C1 C2 A1
11 21
Y1 A2
DEA71
CURRENT
SENSOR
µ µ
C1 C2 A1 12 14 22 24
Y1 A2 11 21
DEB71
Tightening 0.4 Nm
!
to
torque
0.8 Nm
Settings
DEA has fixed settings and requires no adjustment.
DEB threshold current can be set according to application requirements. Adjust the current leakage dial to set the threshold current and adjust the delay time dial to set the alarm ON delay.
If more than one DEB are installed in the same network, downstream devices shall have lower current and time setting.
When the DEB has been set, it is possible to protect the setting from tampering by sealing the front cover with a mechanical lock.
Adjustment
DEB71
Device ON (green) 60% leakage
2
ON 1 5 60%
T
Test pushbutton Current leakage
0.5 10
0.3 30
Alarm status (red) I∆n (A) 40% leakage
0.5
AL 0.3 1 40%
R
Reset pushbutton Delay time
0.1 3
0 5
∆t (s)
Warning status (red) 20% leakage
PRE 20%
Mounting
Hang the device to the DIN-Rail being sure that
the spring closes. Use a screwdriver to remove
the product
Installation instructions
Code 8022315/191223 INSTRUCTION SHEET
DEx71 V2
www.gavazziautomation.com
Connect power supply to terminals A1 and A2.
Connect the core balance transformer (CTG) to
C1 and C2 terminals.
Remote Test and Reset pushbutton can be
connected between terminal Y1 and A2.
Connect 11, 12 and 14 relay terminals to the
main breaker coil in order to disconnect mains
from load in case of leakage alarm.
Terminals 21, 22 and 24 relay terminals can be
used as warning signal.
Keep power OFF while connecting!
Terminals
A1, A2 Power supply
Y1, A2 Remote test / Reset
C1, C2 CTG input
11, 12, 14 Output 1 (Alarm)
Output 2 (Warning)
21, 22, 24
Each terminal can accept up to 1 x 3.3 mm
wires
Turn power ON, if everything is correct the green ON LED will light up. In case of current leakage the yellow 20%, 40% and 60% LEDs will light accord-
ing to the leakage entity.
When the leakage exceeds 60% of set threshold the yellow PRE LED (warning LED) will light up, output 2 relay triggers.
When the leakage exceeds 80% of set threshold, the red AL LED (alarm LED) will turn ON, output 1 relay triggers.
When the leakage fault has been fixed the operation can be restored by pressing the R button either on the device front panel or remotely by pressing
the R/T remote switch.
Packaging
The packing material should be kept for redeliv-
ery in case of replacement or repair.
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CTG (measuring core balance transformer)
Fig.1
N L3
L1 L2
A
B
Fig.2
N L3
L1 L2
CTG
Fig.3
Fig.4
2
d c
CE-marking and approvals
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Selection - Select the correct CTG size ac-
cording to mains cable dimension: referring to
fig 1 the dimension of CTG shall be: b ≥ 1.5 * a.
Connection - To connect the CTG to the DEA
or DEB it is suggested to use twisted pair cable.
If cable is above 3m lenght, twisted cable has
to be always used. It is also recommended, but
not mandatory, to use shielded cable, in such
N L3
case shield should be grounded.
L1 L2
L2
Cable routing - Cables shall be routed in such
way that the cables are centred within the CTG
as shown in fig.2. Make sure that all current car-
rying leads are passed through the CTG. - It is
L1
L2
essential that the earth terminal (PE) is routed
L3
N
outside the CTG or else the operation will be
impaired (Fig. 3). - When it is required to bend
the cable, it is important to maintain e minimum
PE
distance between the CTG and the cable bend-
ing. As shown in fig.4: d ≥ 2 * c.
Notes - Do not pass shielded cables through
the measuring current transformer.