en
Fig. 21: Flexible connection cable
Fig. 22: Rigid connection cable
90
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Electrical connection
3. To protect against leakage and for strain relief to the threaded cable gland, use a
connection cable with sufficient outer diameter.
4. Guide the connection cable through the M25 threaded cable gland (Fig. 19, Item 1).
Threaded cable gland with the specified torques.
5. The cables near the screwed connection are to be bent to form a drain loop, to
drain any accumulated drips.
6. Lay the connection cable in such a way that it touches neither the pipes nor the
pump.
7. Use a heat-resistant connection cable if fluid temperatures exceed 90 °C.
NOTICE
If flexible cables are used for the mains connection or communication connection,
use wire end ferrules!
Unoccupied threaded cable glands must remain closed with the plugs provided by
the manufacturer.
Protective earthing conductor connection
When using a flexible connection cable, use a ring eyelet for the earthing wire (Fig. 21).
When using a rigid connection cable, connect the earthing wire in a U-shape (Fig. 22).
Residual-current device (RCD)
This pump is equipped with a frequency converter. Therefore, it must not be protec-
ted by a residual-current device. Frequency converters can impair the function of re-
sidual-current-operated protection circuits.
NOTICE
This product can cause direct current in the protective earthing conductor. When a
residual-current device (RCD) or a residual-current monitor (RCM) is used for pro-
tection in the case of direct or indirect contact, only an RCD or RCM of type B is per-
missible on the power supply side of this product.
ƒ
Labelling:
ƒ
Trigger current:> 30 mA
Fuse on mains side: max. 25 A
Circuit breaker
The use of a circuit breaker is recommended.
NOTICE
Circuit breaker trigger characteristic: B
Overload: 1.13 – 1.45 x I
Short-circuit: 3 – 5 x I
nom
nom
WILO SE 2021-02