46
Safety, Installation and Operations Manual – Translation of original instructions
-Ex models - DRY version only
For electrical connection, refer to the diagram corre-
sponding to the version indicated on the nameplate
The equipment is equipped with thermal protectors inside the stator windings to shut down the power supply in case of motor overheating.
The standard thermal protection consists of bimetal thermal protectors with nominal switching temperature NST=150°C; as option, bimetallic
protectors can be replaced by PTC thermistors or PT100 sensors.
The thermal protection cables are marked with a label stating and must be connected to the corresponding
terminals of the control panel.
-
-
The standard pump is equipped with a single-signal dual probe that can
detect the presence of water or humidity in the oil chamber of the mecha-
nical seals and in the motor.
The leakage detector is of single electrode type and uses the ground
conductor to close the circuit; the circuit must be supplied with power by
means of an insulating transformer.
On standard models, the cable is marked with a label with the letter
and must be connected to the corresponding terminal of the
control panel.
On request, the pump can be equipped with single probes for the detec-
tion of water or humidity inside the oil chamber of the mechanical seals
(S1), the motor compartment (S2) and the terminal board compartment
(S3) .
Please refer to the specific documentation supplied with the unit.
Electrical safety data for intrinsically safe circuit:
Leakage detector Ui: 30V; Ii: 120mA; Pi: 1.3W
Ci: 0.3nF; Li: ~ 0mH
Cable Cc: 200pF/m; Lc: 1µH/m; Lc/Rc= 30µH/Ω
To set up the electrical connection of the electric pump, do the following:
1. Check which type of electrical connection is required on the identification plate (direct starting or Y/D).
2. Firstly, connect the earth wire to the relative terminal in the electrical panel, according to the connection diagram.
3. Connect the power wires to the relative terminals in the electrical panel, according to the connection diagram.
4. Connect the wires of the control devices to the terminals on the relative panel.
EN
S
S1 S2 S3
1615
TP TP
V
U
W
Zenit Italia s.r.l.
via dell’Industria, 11
I-41018 S.Cesario s.P. (MO)
zenit.com
TYPE
VERS
BB 10 400 D5 EX NN
ZUG V 100 A 15/2 A W 160
400
V V
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