SMA SMC 9000TL Installation - Manual (Page 43)

Installation Manual SMC9-11TLRP-IA-en-51 43
SMA Solar Technology AG 6 Electrical Connection
You need a special Y cable to connect the SMA Power Balancer. The Y cable is not a standard
accessory. You can order the Y cable from SMA Solar Technology AG (see section 13 "Accessories",
page 91).
The Y cable is designed for distances of maximum 2 m between two inverters. If the distance between
inverters is longer, you will have to extend the cable.
Requirements for the extension cord:
☐ Maximum cable length: 300 m
☐ Extension cord for indoor use: Li2YCY 1 x 2 x 0.25 mm², shielded, flexible, insulated, twisted
pair.
☐ Extension cord for outdoor use: Li2YCYv 1 x 2 x 0.25 mm², shielded, flexible, insulated, twisted
pair.
9.
Risk of fire due to tightening the screw within the ESS
A perfect contact between the ESS and the inverter is only guaranteed if the ESS plug remains
flexible.
• Do not tighten the screw in the plug of the ESS.
10.
Damage to the inverter due to moisture and dust intrusion
If the ESS is not plugged in or incorrectly plugged in during operation, moisture and dust can
penetrate the inverter. If the ESS is not correctly plugged in, this can cause contacts in the ESS
to wear or the ESS might fall out of the socket. This can result in yield loss and damage to the
ESS.
Always plug in the ESS as follows:
• Firmly plug in the ESS until it is flush with the
enclosure.
• Ensure that the gap between the ESS and the
enclosure is no more than 1 mm.
6.5 Connecting the SMA Power Balancer