KACO Powador XP200-HV TL - Manual (Page 22)

Installation
Page 22 Operating Instructions Powador XP200-HV TL, XP250-HV TL, XP350-HV TL_EN
Electrician
7.4 Connecting the PV generator (DC connection)
The DC connection is located at the bottom of the left inverter cabinet (Figure 12).
Connection data
Max. cable cross-section 300 mm²
Connection bolt M10
Tightening torque for DC terminal connections 40 ... 50 Nm
Fuse protection for DC connection XP200-HV TL: 2 fuses each for DC+/DC–
XP250-HV TL: 3 fuses each for DC+/DC–
XP350-HV TL: 4 fuses each for DC+/DC–
Ensuring that there is no ground fault
1. Determine the DC voltage between the
– protective earth (PE) and the positive lead of the PV generator,
– protective earth (PE) and the negative lead of the PV generator.
If stable voltages can be measured, there is a ground fault in the DC generator or its wiring. The ratio between the
measured voltages gives an indication as to the location of this fault.
2. Rectify any faults before taking further measurements.
3. Determine the electrical resistance between the
– protective earth (PE) and the positive lead of the PV generator,
– protective earth (PE) and the negative lead of the PV generator.
Low resistance (< 2 MΩ) indicates a high-ohm ground fault of the DC generator.
4. Rectify any faults before connecting the DC generator.
Connecting the cables
DANGER
Lethal voltages in the PV system
Lethal voltages are present in the PV system.
› Make absolutely sure that the plus and minus poles are properly insulated.
Each cable corresponds to a specific pole.
1. Connect the cables to the poles.
Make sure the polarity is correct (Figure 12):
– Left side (item 1): Positive (DC+)
– Right side (item 2): Negative (DC–)
2. Screw down the cables.
3. Make sure that all of the cables and seals are securely
attached.
1 2
Figure 12: DC connections (XP-250 HV)
1
2 DC+ connections
DC– connections
NOTE
If positive or negative grounding of the PV
generator is necessary, the use of an
optional grounding kit for the XP inverters
is mandatory.
› Do not ground the inverter without the
grounding kit.