SMA HM-BT-10.GR2 - Connecting the Master

5 System With Three Sunny Island Inverters SMA Solar Technology AG
18 FSS-IS-en-42 Installation Manual - Quick Reference Guide
5.2 Connecting the Master
Figure4: Connecting the master
Position Designation Description / information
A AC power cable Terminal AC2 Gen/Grid, terminals L, N
TT
und PE
Utility grid connection with a three-wire cable to the line conductor L1
Conductor cross-section: 6 mm² to 16 mm²
B Grounding conductor Terminal AC1 Loads/SunnyBoys, terminal PE
Additional grounding if the conductor cross-section of the AC power
cable is less than 10 mm²
The conductor cross-section must equal at least the conductor
cross-section of the AC power cable.
C DC+ cable Battery terminal
Conductor cross-section: 50 mm² to 95 mm²
Cable diameter: 14 mm to 25 mm
Torque: 12 Nm
D DC − cable
E Measuring cable of the battery
temperature sensor
Terminal BatTmp
You only have to connect a battery temperature sensor if lead-acid
batteries are used.
Mount the battery temperature sensor in the middle of the battery
terminal, in the upper third of the battery cell.