Hoymiles HRSD-2C User Manual
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Hoymiles HRSD-2C User Manual

Rapid shutdown
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Open Energy for All
Rapid Shutdown
USER MANUAL
HRSD-2C
HT-G20
HT-G20-Kit
Region: Global V202402
hoymiles.com

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Summary of Contents for Hoymiles HRSD-2C

  • Page 1 Open Energy for All Rapid Shutdown USER MANUAL HRSD-2C HT-G20 HT-G20-Kit Region: Global V202402 hoymiles.com...
  • Page 2 However, the content of this manual is continually reviewed and amended, due to product enhancements or feedback from real-world usage. Hoymiles retains the right to modify this manual without prior notice at any time. Please refer to Hoymiles official website at www.hoymiles.com...
  • Page 3 To quickly select the HRSD or Transmitter, use Rapid Shutdown Compatibility Calculator. For more information or related documents, refer to the product page at hoymiles.com. Revision History Issues V202402 Original issue © 2024 Hoymiles Power Electronics Inc. All rights reserved.

  • Page 4: Table Of Contents

    5.2 HT-G20 5.3 HT-G20-Kit 6. System Commissioning and Maintenance 6.1 System Commissioning 6.2 System Maintenance 7. Troubleshooting 7.1 Terminology 7.2 Troubleshooting Guide 8. Technical Specifications 8.1 HRSD-2C 8.2 HT-G20 8.3 HT-G20-Kit © 2024 Hoymiles Power Electronics Inc. All rights reserved.

  • Page 5: Safety Information

    • To install the HRSD, connect the input cables to the PV module first, and then connect the HRSD output cables in series. © 2024 Hoymiles Power Electronics Inc. All rights reserved.
  • Page 6 Improper installation may lead to HRSD damage, which is not covered under warranty. • The HRSD-2C has two inputs. If you are connecting it to one PV module, connect HRSD-2C Input 1 first, and then short jump the HRSD-2C Input 2 - and Input 2 + together.

  • Page 7: Products

    Rapid Shutdown User Manual 2. Products 2.1 HRSD-2C Appearance IP68 / NEMA6P IP68 / NEMA6P Output Output IN 1 IN 2 Input 1 + Input 2 Input 1 - Input 2 Mounting Brackets © 2024 Hoymiles Power Electronics Inc. All rights reserved.
  • Page 8 Able to avoid crosstalk with special communication modulation technique As part of Hoymiles Rapid Shutdown Solution for the PV system, HRSD-2C is connected with two modules. It meets NEC 2017, NEC 2020, UL 1741 and SunSpec Rapid Shutdown requirements, guaranteeing PV system safety.

  • Page 9: Ht-G20

    Power Input (+12 V) Power Input (GND) RS-485B1 RS-485A1 RS-485A2 LED2 (Signal Indicator) RS-485B2 LED1 (Power Indicator) Setup Button LED3 (Logic Indicator 1) Core2 Port LED4 (Logic Indicator 2) Core1 Port Core © 2024 Hoymiles Power Electronics Inc. All rights reserved.
  • Page 10 Complied with NEC 2017&NEC 2020 690.12 requirements • Equipped with single/dual Core As part of Hoymiles Rapid Shutdown solution, Hoymiles Transmitter HT-G20 works with HRSD for module- level rapid shutdown. When powered on, the HT-G20 uses PLC technology to continuously send a “permission to operate” signal to HRSD, enabling the PV system to start producing power.

  • Page 11: Ht-G20-Kit

    LED4 (Logic Indicator 2) Core1 Port [A] Transmitter HT-G20 [B] 85-277 VAC DIN Rail PSU [C] Terminal Block [D] AC Power Cable Gland [E] Core Cable Gland [F] RS-485 Cable Gland [G] Core © 2024 Hoymiles Power Electronics Inc. All rights reserved.
  • Page 12 Equipped with single-phase power supply As part of Hoymiles Rapid Shutdown solution, the HT-G20-Kit is designed to work with HRSD for rapid shutdown at the module level. The kit comprises one HT-G20 (available in single or dual Core), one single- phase power supply, and an outdoor enclosure.

  • Page 13: Hoymiles Rapid Shutdown System

    No.2 Cable Tray HT-G20-Kit (n ≤ 9) IMPORTANCE • Hoymiles recommends that the Transmitter power supply be on the same AC branch circuit as the inverter to meet rapid shutdown requirements. © 2024 Hoymiles Power Electronics Inc. All rights reserved.
  • Page 14 ON and allows full PV module voltage. When de-energized, the Transmitter stops the signal, making the HRSD-2C enter shutdown mode with output voltage reduced to 0.9-1.1 V. Thus, the PV array enters rapid shutdown mode in the event of AC grid loss.

  • Page 15: Initiation Methods

    Rapid Shutdown User Manual 3.2 Initiation Methods Hoymiles Rapid Shutdown System can be initiated in two ways—1) turning off the AC breaker and 2) pressing the external emergency stop button. 3.2.1 Turning off AC Breaker Working Principle This method requires an upstream AC breaker. When the breaker is turned off, the DC 12V power to the Transmitter is disconnected, which interrupts the “permission to operate”...
  • Page 16 Serially connect the NC contacts (1 and 2) of the emergency stop button to the live wire (L) of the upstream AC cable. NOTICE • The AC circuit should be 220V 6A or 380V 4A. • The emergency stop button should be installed at an accessible location. © 2024 Hoymiles Power Electronics Inc. All rights reserved.

  • Page 17: Cable Length And Routing

    HRSD-2C input cable: 0.45 m (1.48 ft.) PV Module output cable: ≥ 1.35 m (4.43 ft.) * The proportions of the HRSDs have been modified to improve the depiction of the structure. © 2024 Hoymiles Power Electronics Inc. All rights reserved.
  • Page 18 HRSD-2C input cable: 0.45 m (1.48 ft.) PV Module output cable: ≥ 1.35 m (4.43 ft.) * The proportions of the HRSDs have been modified to improve the depiction of the structure. © 2024 Hoymiles Power Electronics Inc. All rights reserved.

  • Page 19: Routing Instruction

    PV 1 + PV 2 + Cable Transmitter No. 9 Tray PV 8 - PV 9 - PV 8 + PV 9 + Number of Transmitter ≤ 9 PV arrays and HRSDs © 2024 Hoymiles Power Electronics Inc. All rights reserved.

  • Page 20: Installation

    PV modules. • The HRSD-2C has two inputs. If you are connecting it to one PV module, connect HRSD-2C Input 1 NOTICE first, and then short jump the HRSD-2C Input 2 - and Input 2 + together.
  • Page 21 Step 2 Connect the PV modules to the HRSD-2C. NOTICE • To prevent accidental damages, Hoymiles recommends securing the DC cables to the PV module frames with cable ties. Step 3 Connect the HRSD-2C outputs in series. IP68 / NEMA6P...

  • Page 22: Ht-G20

    • Improper installation may lead to HT-G20 damage, which is not covered under warranty. • Hoymiles recommends that Transmitter power supply be on the same AC branch circuit as the inverter to meet rapid shutdown requirements. • Place rapid shutdown system sticker no more than 1m (3 ft.) from the Transmitter or AC disconnect.
  • Page 23 * The color of the 12 V DC power cable may not be red and black. Adhere to the local codes. c. Connect the other end of the cable to the output terminals of the power supply. 6-7 mm (0.24‘’-0.28‘’) 0.4 N·m (3.5 lb·in) © 2024 Hoymiles Power Electronics Inc. All rights reserved.
  • Page 24 PV 4 Step 6 Connect the RS-485 ports of all the Transmitters in a defined order. B1 A1 B2 A2 B1 A1 B2 A2 B1 A1 B2 A2 B1 A1 B2 A2 © 2024 Hoymiles Power Electronics Inc. All rights reserved.

  • Page 25: Ht-G20-Kit

    • Improper installation may lead to HT-G20-Kit damage, which is not covered under warranty. • Hoymiles recommends that the Transmitter power supply be on the same AC branch circuit as the inverter to meet rapid shutdown requirements. • Place rapid shutdown system sticker no more than 1m (3 ft.) from the Transmitter or AC disconnect.
  • Page 26 * The color of the RS-485 cable may not be brown and blue. Adhere to the local codes. d. Securely screw the nut. (Torque: 5-6 N·m / 44.25-53.10 lb·in) 6-7 mm (0.24‘’-0.28‘’) 0.4 N·m (3.5 lb·in) © 2024 Hoymiles Power Electronics Inc. All rights reserved.
  • Page 27 Pass either positive homerun or negative homerun through the Core. For common mistakes, refer to 5.2 on page *Either positive or negative homerun runs through the Core. PV 1 + PV 1 - PV 2+ PV 2 - © 2024 Hoymiles Power Electronics Inc. All rights reserved.
  • Page 28 Remove only one hole plug in the AC Power Cable Gland of the last HT-G20-Kit. L1 N1 L2 N2 L1 N1 L2 N2 L1 N1 L2 N2 L1 N1 L2 N2 © 2024 Hoymiles Power Electronics Inc. All rights reserved.

  • Page 29: System Commissioning And Maintenance

    WARNING • Up to nine Transmitters can be connected by the RS-485 cable. Follow the steps in 6.1 when either the Transmitter or its amount in the system is changed. © 2024 Hoymiles Power Electronics Inc. All rights reserved.

  • Page 30: Troubleshooting

    The cable length (the PV+ to PV- loop of each PV string) does not exceed 800 m (2625 ft.). • The homeruns passing through the Core are of the same polarity, either all positive or all negative. © 2024 Hoymiles Power Electronics Inc. All rights reserved.
  • Page 31 HRSD with a multimeter. If the output voltage is still 0 V, there is an internal malfunction in the HRSD. Contact Hoymiles technical support team to replace the HRSD. © 2024 Hoymiles Power Electronics Inc. All rights reserved.

  • Page 32: Technical Specifications

    *1 The former matches PV module output cables of 1.35 m (4.43 ft.) at minimum, and the latter matches those of 0.2 m (0.66 ft.) at minimum. 2 Fits PV module in portrait installation. Contact Hoymiles if horizontal installation is needed.

  • Page 33: Ht-G20

    Voltage: 12 V DC (+/-2%) Power Standby: 0.2 W Duty Cycle: 16% Max. Power: 3 W Unit : mm / inch 36.5 / 1.44 Transmitter Core-250 A Core-150 A Core-75 A © 2023 Hoymiles Power Electronics Inc. All rights reserved.

  • Page 34: Ht-G20-Kit

    In the table we have assumed each string has 30 PV modules.) 198.5 / 7.81 18 / 0.71 36.5 / 1.44 Power Supply Transmitter Core-250 A Core-150 A Core-75 A Unit : mm / inch (85-277 V) © 2023 Hoymiles Power Electronics Inc. All rights reserved.

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