Sunways STT-80K - Page 10

18 19
Crimping Plier
Figure 4-9
Figure 4-11
3) Disassemble the connector in the accessory bag, as shown in Figure 4-9:
5) Insert the positive and negative cables into the corresponding positive and negative
connectors and pull back the DC cable to ensure that the terminal is tightly attached in the
connector.
6) Screw the nut to the end with some power and ensure the terminal is well sealed, as
shown in Figure 4-11:
Figure 4-10
4) Insert the DC cable through the DC connector nut into the metal terminal and press the
terminal with a professional crimping plier (pull back the cable with some power to check if
it’s tight enough), as shown in Figure 4-10:
+
-
Model
Inverter Rated
Output Voltage
AC Breaker
Rated Voltage
AC Breaker
Rated Current
STT-80KTL 400V 400V 160A
STT-100KTL 400V 400V 200A
STT-110KTL 400V 400V 200A
STT-100KTL-HV 500V 690V 160A
STT-125KTL-HV 500V 690V 200A
4.3.2 Connection of AC output
Before connecting to the power grid, make sure that the power grid voltage and frequency
meet the requirements of the inverter. See technical parameters for details.
1) AC circuit breaker
The rated output voltage of Sunways STT series 80~125kW three-phase inverter and the
recommended circuit breaker speci󽗉cations are shown in the table below:
2) Requirements for OT/DT terminal
OT/DT terminals (not included in the delivery scope) are required for 󽗉xing AC cables to the
terminal block. Purchase the OT/DT terminals according to the following requirements.
Figure 4-12
7) Insert the positive and negative connectors into the inverter DC input terminals respectively,
and a "click" sound represents the assembly in place, as shown in Figure 4-12:
8) Seal the unused PV terminals with the terminal caps.
1.Before assembling the DC connector, make sure that the cable polarity is
correct.
2.Use a multimeter to measure the voltage of the DC input string, verify the
polarity of the DC input cable, and ensure that each string voltage is within
1100V.
Warning
An AC breaker must be connected on the AC side of the inverter.
Any loads cannot be directly connected to the inverter.
Warning
Open-end Wrench
OT / DT terminals of phase wire OT / DT terminals of PE wire
Speci󽗉cation M10 M6
Dimensions a ≤ 36mm / 11mm ≤ b ≤ 15mm / c ≤ 20mm
/