Wilo Drain STS 80 Serie Instrucciones De Instalación Y Funcionamiento página 20

Mains fuse (time-lag)
Cable cross-section
Cable diameter
Recommended PG screw
●
Pump must be earthed in compliance with regulations.
●
For pumps that are installed for stationary use, the metal pump housing must also be
earthed in accordance with EN 50014. Attach the protective conductor connection (as com-
pliant with EN 60335) to the drill hole labelled with the earth symbol (
handle using a suitable screw, nut, tooth lock washer and standard washer.
●
Use a cable with diameter of min. 2.5 mm² to 6 mm², or follow the local regulations, to con-
nect the protective conductor connection.
●
We also advise you to use a residual current operating device.
●
The switch box for the pump(s) should be obtained as an accessory.
ATTENTION!
P2 ≤ 3.8 kW: direct starting
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P2 ≥ 3.9 kW: star delta starting
●
●
The provisions laid down by your local energy supplier will determine the threshold between
direct and star delta starting.
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Motor safety switch (set to the nominal pump motor current indicated on the rating plate).
●
A standard measuring appliance can be used to switch the thermal winding contact (WSK)
for the thermal monitoring of the motor.
Recommended level: 24 V DC.
●
Connecting cables should be connected to the leads as follows:
7-lead connection cable:
STS 80 / 100
1
Lead no.
U1
Terminal
Switching type: direct start
10-lead connection cable:
STS 100
1
Lead no.
Terminal U1
Switching type:
P2 ≤ 3.8
7 x 1.5
17 mm approx.
PG 21/M
Where you provide your own switch box, you must ensure it meets with
the following energy supplier requirements:
2 3
green/yellow
V1 W1 PE
2 3 4 5
V1 W1 V2 W2
star delta starting
Direct starting possible where switch box is wired as follows:
L1 → U1 + W2
L2 → V1 + U2
L3 → W1 + V2
STS 80 STS 100
[kW]
3.9 ≤ P2 ≤ 8.4
16 A
10 x 1.5
19 mm approx.
PG 29/M
Switch at 230 V AC, max. 2 A.
1.5
4 5
WSK WSK
1.5
6
green/yellow
U2 PE
[kW]
36 A
) and located on the
6
unused
7 8 9
WSK WSK unused
English
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