Grundfos SLV.65 Bedienungsanleitung Seite 14

8. Electrical connection
Warning
Connect the pump to an external mains
switch ensuring all-pole disconnection with
a contact separation according to EN
60204-1, 5.3.2.
It must be possible to lock the mains
switch in position 0. Type and
requirements as specified in EN 60204-1,
5.3.2.
The electrical connection must be carried
out in accordance with local regulations.
Warning
Connect the pumps to a control box with a
motor protection relay with IEC trip class
10 or 15.
Warning
The permanent installation must be fitted
with an earth leakage circuit breaker
(ELCB) with a tripping current < 30 mA.
Warning
When the pump has been installed, there
must be at least 3 m free cable above the
maximum liquid level.
Warning
Pumps to be installed in potentially
explosive locations must be connected to
a control box with a motor protection relay
with IEC trip class 10.
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Warning
Do not install Grundfos control boxes,
pump controllers, Ex barriers and the free
end of the power cable in potentially
explosive environments.
The explosion protection classification of
the pumps is CE Ex II 2 G, Ex d IIB T4 X.
The classification of the installation site
must be approved by the local fire-fighting
authorities in each individual case.
On explosion-proof pumps, make sure that
an external earth conductor is connected
to the external earth terminal on the pump
using a conductor with a secure cable
clamp. Clean the surface of the external
earth connection and mount the cable
clamp.
The cross section of the earth conductor
must be at least 4 mm
K (PVT 90 °) yellow and green.
Make sure that the earth connection is
protected against corrosion.
Make sure that all protective equipment
has been connected correctly.
Float switches used in potentially
explosive environments must be approved
for this application. They must be
connected to the Grundfos LC, LCD 108
pump controller via the intrinsically safe
LC-Ex4 barrier to ensure a safe circuit.
Warning
If the supply cable is damaged, it must be
replaced by the manufacturer, his service
agent or a similarly qualified person.
Set the motor-protective circuit breaker to
Caution
the rated current of the pump. The rated
current is stated on the pump nameplate.
Warning
If the pump has an Ex mark on the
nameplate, make sure that the pump is
connected in accordance with the
instructions given in this booklet.
2
, e.g. type H07 V2-