Inst
allatio
n
TPE E-circulators
13
42
Electrical installation
Electrical connection
Carry out electrical connection and protection in accor-
dance with local regulations.
• Electronically speed-controlled pumps must always
be correctly grounded.
• Single-phase standard motors incorporate a thermal
switch and require no additional thermal motor
protection.
Note:
Carry out the mains connection of the pump as
shown in the diagram inside the terminal box cover.
Do not start the pump until it has been filled with liquid
and vented.
Protection
Protection against fault currents
If the pump is connected to an electric installation
where an earth leakage circuit breaker (ELCB) is used
as additional protection, the earth leakage circuit
breaker must be marked with the following symbols.
The earth leakage circuit breaker
must
trip out when
earth fault currents with DC content (pulsating DC) and
smooth DC earth fault currents occur.
Communication cables for TPE
Use screened cables (min. 0.5 mm
2
) for external on/off
switch, digital input, sensor and and setpoint signals.
The screens of the cables should be connected to
frame at both ends.
The screen of the cable must have good frame
connection which must be as close as possible to the
terminals.
Fig. 16
External start/stop cable connection of TPE
Use a screened 2-core cable for the bus connection.
Connect the screen to terminal Y at both ends.
Fig. 17
Bus connection of TPE
T
M
02
13
25
09
01
TM
02
13
43
10
01
Screen
Y
Screen
E-circulator.book Page 42 Friday, October 7, 2011 4:01 PM