sunways STS Series Solar Inverter Owner’s Manual

STS Series Solar Inverter

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Specifications:

• Model: STS-3KTL-P, STS-3.6KTL-P, STS-4.2KTL-P, STS-4.6KTL-P,
  STS-5KTL-P

• Input:

  • Max. Input Power (W): 4,800 – 8,000

  • Start-up Voltage (V): 80

  • Min. DC Voltage (V): 100

  • Max. DC Input Voltage (V): 600

  • Rated DC Input Voltage (V): 360

  • MPPT Voltage Range (V): 100-550

  • Number of MPP Trackers: 2

  • Number of DC Inputs per MPPT Max. Input Current (A): 1
    15/15

  • Max. Short-circuit Current (A): 20/20

• Output:

  • Rated Output Power (W): 3,000 – 5,000
  • Max. Output Power (W): 3,300 – 5,500
  • Max. Apparent Power (VA): 3,300 – 4,990
  • Grid Type (V): 220/230
  • Rated AC Frequency (Hz): 50/60
  • Max. Output Current (A): 15 – 25/21.7
  • Power Factor: 0.8 leading to 0.8 lagging

Product Usage Instructions:

Installation:

1. Ensure proper ventilation around the inverter.

2. Connect the DC input cables as per the specified voltage and
   current ratings.

3. Connect the inverter to the grid power supply following local
   regulations.

Operation:

1. Switch on the inverter using the designated power button.

2. Monitor the display for any error codes or abnormal
   behavior.

3. If any issues arise, consult the user manual for
   troubleshooting steps.

Maintenance:

1. Clean the inverter surface regularly to prevent dust
   accumulation.

2. Ensure all connections are secure and free from corrosion.

3. Periodically check the performance logs to ensure optimal
   efficiency.

Frequently Asked Questions (FAQ):

Q: What should I do if the inverter displays an error

code?

A: Refer to the user manual for a list of error codes and
corresponding troubleshooting steps. If the issue persists, contact
customer support.

Q: Can I install the inverter outdoors?

A: The inverter is rated IP65 for protection against dust and
water jets, making it suitable for outdoor installation. Ensure
proper mounting and protection from direct sunlight.

Q: How can I maximize the energy yield from the inverter?

A: Ensure the solar panels are properly oriented towards the sun
and free from shading. Regularly monitor and maintain the system
for optimal performance.

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STS Series

MAX. EFFICIENCY 98.1% IP65 PROTECTION
STS 3~6KTL-P
Single Phase | 2 MPPTs | On Grid

· High reliability due to good heat dissipation design · Integrated lightning protection for both DC and AC · Adapt to complex power grid · High anti- corrosion ability with aluminum alloy die casting technology · Wider working temperature and altitude, adapt to various installation environments
· High yield with Max. Efficiency 98.1% · European weighted efficiency 97.5% · Wide MPPT voltage range · Up to 10% continuous output overloading capacity · With a max input current of 15A, compatible with high-power panels
· Compact elegant design, light weight, one-person installation · Plug and play connectors, easy for installation · Support wireless and wired internet connection (RS485/WiFi/GPRS/LAN optional) · Remote upgrading available · Fast and easy configuration via App or OLED display

SAFE & RELIABLE HIGH YIELD
EASY TO USE

Model

STS-3KTL-P

STS-3.6KTL-P

STS-4.2KTL-P

STS-4.6KTL-P

STS-5KTL-P

Input

Max. Input Power (W)

4,800

5,760

6,720

7,360

8,000

Start-up Voltage (V)

80

80

80

80

80

Min. DC Voltage (V)

100

100

100

100

100

Max. DC Input Voltage (V)

600

600

600

600

600

Rated DC Input Voltage (V)

360

360

360

360

360

MPPT Voltage Range (V)

100-550

100-550

100-550

100-550

100-550

Number of MPP Trackers

2

2

2

2

2

Number of DC Inputs per MPPT Max. Input Current (A)

1 15/15

1 15/15

1 15/15

1 15/15

1 15/15

Max. Short-circuit Current (A)

20/20

20/20

20/20

20/20

20/20

Output Rated Output Power (W)** Max. Output Power (W) Max. Apparent Power (VA)

3,000 3,300 3,300

3,600 3,960 3,960

4,200 4,600 4,600

4,600 4,600 4,600

5,000/4,990 5,500/4,990 5,500/4,990 **

Grid Type (V)**

220/230

Rated AC Frequency (Hz) Max. Output Current (A)

50/60 45-55/55-65

15

18***

21

21

25/21.7 ****

Power Factor

0.8 leading…0.8 lagging

THDi @ Rated Power

<3%

DCI

<0.5%In

Efficiency

Max. Efficiency

98.1%

98.1%

98.1%

98.1%

98.1%

European Efficiency

97.5%

97.5%

97.5%

97.5%

97.5%

MPPT Efficiency

99.9%

99.9%

99.9%

99.9%

99.9%

Protection

DC Reverse Polarity Protection

Integrated

Insulation Resistance Protection

Integrated

DC Switch

Optional

Surge Protection

Integrated

Over-temperature Protection

Integrated

Residual Current Protection

Integrated

Anti-islanding Protection

Integrated

AC Short-circuit Protection

Integrated

AC Over-voltage Protection

Integrated

General Data

Dimensions [WHD] (mm)

410360120

Weight (kg)

13

Protection Degree

IP65

Self-consumption at Night (W)

<1

Topology

Transformerless

Operating Temperature Range (°C)

-30~60

Relative Humidity (%)

0~100

Operating Altitude (m)

4000 (derating@ > 3000)

Cooling

Natural Convection

Noise Level (dB)

< 25

Display

OLED & LED

Communication

RS485/WiFi/GPRS/LAN (Optional)

STS-3~6KTL series maximum input current per string is 12.5A, and STS-3~6KTL-P version is 15A, products deliver upon the order.

The grid feed in power for AS/NZS 4777.2 is limited 4.99kW & 4.99kVA & 21.7A.

• : 3680 for G98.

** : 5000 for C10/11.

*** : 16 for G98.

**** : 21.7 for C10/11.

** Due to differences in voltage values in various countries, minor variations may occur. The final interpretation rights belong to Sunways.

STS-6KTL-P
9,600 80 100 600 360
100-550 2 1
15/15 20/20
6,000 6,600 6,600
28.7
98.1% 97.5% 99.9%

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