SMA SUNNY TRIPOWER X 20-US - DC Connection; Assembling the DC Connectors

6 Electrical Connection
SMA Solar Technology AG
Operating manual STPxx-US-50-BE-en-11 49
12. Ensure that all conductors are correctly connected.
13. Ensure that the conductors sit securely in the terminal points.
Also see:
• Additionally required material for the connection to digital inputs⇒page38
• Signal cable requirements⇒page37
6.9 DC connection
6.9.1 Assembling the DC Connectors
For connection to the inverter, all PV module connection cables must be fitted with the DC
connectors provided. Assemble the DC connectors as described in the following (refer to the
manufacturer manual for further information on assembling the DC connectors). Be sure to observe
the correct polarity.
DANGER
Danger to life due to electric shock when live components or DC cables are
touched
When exposed to light, the PV modules generate high DC voltage which is present in the DC
cables. Touching live DC cables results in death or lethal injuries due to electric shock.
• Do not touch non-insulated parts or cables.
• Disconnect the product from voltage sources and ensure it cannot be reconnected before
working on the device.
• Do not disconnect the DC connectors under load.
• Wear suitable personal protective equipment for all work on the product.
Additionally required material (not included in the scope of delivery):
☐ Stripping tool
☐ Crimping tool suitable for crimping the cold-formed contact ferrules (observe manufacturer
information).
☐ Tool for tightening the swivel nut (observe manufacturer information).
☐ Where applicable, tool for checking whether the conductors with contact ferrules plug far
enough into the DC connector (observe manufacturer information).
Procedure:
1. Strip off the conductor insulation by 7mm ±0.5mm (0.28in ±0.02in).
2. Thread the cold-formed contact ferrule onto the stripped conductor and crimp using a crimping
tool suitable for the cold-formed contact ferrule.
3. Guide the conductor with the cold-formed contact ferrule into the connector until the cold-
formed contact ferrule snaps audibly into place in the DC connector.