Electrical Connection - BADU BNR 300 Montage & Betriebsanleitung

C.2.

Electrical connection

Before working on the unit, switch off the power supply and secure it from being
switched on again! Check for the absence of power!
Electrical connections may only be made by a specialist and in compliance with
the applicable regulations.
Do not use the controller if the housing shows visible damage, for example
cracks.
Low-voltage cables such as temperature sensor cables must be routed separa-
tely from the mains voltage cables. Feed temperature sensor cables into the left-
hand side of the unit only and mains voltage cables into the right-hand side only.
The customer must provide an all-pole disconnecting device in the power supply
of the controller e.g. a heating emergency switch.
The cables being connected to the unit must not be stripped by more than 55 mm
and the cable jacket must reach into the housing to the other side of the strain
relief.
Follow the scope of protection according to the German Institut for Standardizations VDE
0100-702 for the installation of the controller (distance to the scope of protection 0 and 1).
Danger of electric shock due to improper connection!
- Observe VDE and EVU regulations of the energy supply company.
- Install pumps and swimming pools and their scope of protection
according to the German Institut for Standardization VDE 0100-702.
- Install a disconnecting device for the interruption of the power supply
with min 3 mm of contact per pole.
Danger of electric shock due to voltage on the housing!
- A correctly confi gured motor overload switch must be installed. While
doing so, observe the values on the name plate.
- Protect the power supply with a differential switch, nominal residual
current I ΔN ≤ 30 mA.
- Only use suitable cables according to regional regulations.
- Adapt the minimum section of the pipe to the motor capacity and the
performance range.
- Provide an emergency stop switch according to DIN EN 809 where
dangerous situations could arise. The operator should make the
decision based on this standard.
Installation
9