Sungrow SG33CX User Manual

User Manual 5 Electrical Connection
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a
b
c
Fig. 5-2 Dimensions of Terminal
5.5.3 Aluminium Cable Requirements
If an aluminium cable is selected, use a copper to aluminium adapter terminal to
avoid direct contact between the copper bar and the aluminium cable.
Aluminium cable
Aluminium adapter
terminal
Flange nut
Fig. 5-3 Aluminium cable terminal connection sequence
Direct contact between the copper bar and the aluminium cable will cause
electrochemical corrosion and impair the reliability of electrical connection.
5.5.4 Connection Procedure
Step 1 Disconnect the AC-side circuit breaker and prevent it from inadvertent
reconnection.
Step 2 Take out the AC junction box and loosen the swivel nut. Remove the
seals and select an appropriate one according to cable outer diameter.
Lead the cable through the swivel nut, seal, and junction box
successively.

Sungrow SG33CX Specifications

General

Model	SG33CX
Manufacturer	Sungrow
Rated Power	33 kW
Max DC Voltage	1100 V
Max Efficiency	98.7%
Start Voltage	200 V
Total Harmonic Distortion	< 3%
Power Factor at Rated Power	1
DC Connection Type	MC4
Allowable Relative Humidity Range	0 - 100%
Operating Altitude	4000 m
MPPT Voltage Range	200 V - 1000 V
AC Voltage Range	310 V - 480 V
Rated Grid Frequency	50 Hz / 60 Hz
Adjustable Power Factor Range	0.8 leading to 0.8 lagging
Operating Ambient Temperature Range	-25 °C ... +60 °C
Communication	RS485