Hoymiles HRSD-1C User manual

Open Energy for All
Rapid Shutdown
HRSD-1C
HT10
HT10-Kit
USER MANUAL
Region: Global V202205 hoymiles.com

Rapid Shutdown User Manual
© 2022 Hoymiles Power Electronics Inc. All rights reserved.
CONTENTS
1. Products 01
1.1 HRSD-1C 02
1.2 HT10 03
1.3 HT10-Kit 04
2. System Overview 04
3. Installation Notes 05
4. Installation 06
4.1 HRSD-1C Installation 07
4.2 HT10 Installation 09
4.3 HT10-Kit Installation 11
4.4 Conduit Drilling Guide 14
5. TechnicalSpeciications 15
5.1 HRSD-1C 15
5.2 HT10 16
5.3 HT10-Kit 17

Rapid Shutdown User Manual
SAVE THESE INSTRUCTIONS
• This manual contains important instructions for installation and maintenance of the Hoymiles
product models HRSD-1C and the Transmitter.
• Risk of electric shock, do not remove the cover, disassemble, or repair, no user-serviceable parts
inside. If it fails, contact Hoymiles Customer Support. Damaging or opening the product will void
the warranty.
• Before installing or using the Hoymiles HRSD-1C System, please read all instructions and warning
markings on the Hoymiles products, relevant sections of your inverter manual, photovoltaic (PV)
module installation manual, and other available safety guides.
• Failure to adhere to these instructions may result in injury or death, damage to the system or
invalidating the factory warranty.
• Perform all electrical installations in accordance with local codes.
• Do NOT disconnect the PV module from the HRSD-1C without first disconnecting the AC power.
• Installation must be performed by trained professionals only. Hoymiles does not assume liability for
loss or damage resulting from improper handling, installation, or misuse of products
• Do not attempt to install in inclement weather.
• Be aware that the body of the running HRSD-1C is the heat sink and can reach high temperatures.
To reduce the risk of burns, do not touch the body of the HRSD-1C.
• Do not operate the HRSD-1C if they have been physically damaged. Check existing cables and
connectors and ensure they are in good condition and appropriate in rating. Do not operate HRSD-
1C with damaged or substandard wiring or connectors.
• Do not connect or disconnect under load. Turning off the Inverter and/or the HRSD-1C products
may not reduce this risk. Internal capacitors within the inverter can remain charged for several
minutes after disconnecting all power sources. Verify capacitors have discharged by measuring a
voltage across inverter terminals before disconnecting wiring if service is required. Wait 30 seconds
after rapid shutdown activation before disconnecting DC cables or turning off DC disconnect.
• The transmitter control power supply MUST be on the same AC branch circuit as the inverter to
meet rapid shutdown requirements.
© 2022 Hoymiles Power Electronics Inc. All rights reserved.

Rapid Shutdown User Manual
© 2022 Hoymiles Power Electronics Inc. All rights reserved. 01
1. Product
1.1 HRSD-1C
Features
• Meets NEC2017&NEC2020 690.12 requirements
• Meets Sunspec RSD requirements
• PLC communication， realize rapid shutdown with Transmitter
• Plug & play, no confguration required
• Lower power consumption and wider operating voltage range
• Much lower than arc noise. No risk of triggering AFCI
As part of Hoymiles rapid shutdown solution for PV system, HRSD-1C can be connected with one module. It
meets NEC2017, NEC 2020, UL 1741 and Sunspec Rapid Shutdown requirements, guaranteeing PV system
safety.
When installed with and receiving a “permission to operate” signal from Hoymiles Transmitter, HRSD starts
proper operation of PV system. In case of emergency, PV system would enter module-level rapid shutdown
mode by simply disconnecting the AC power of Transmitter or using an external initiator.

Rapid Shutdown User Manual
© 2022 Hoymiles Power Electronics Inc. All rights reserved. 02
1.2 HT10
Features
• Meets NEC2017&NEC2020 690.12 requirements
• Meets SunSpec RSD requirements
• Equipped with single/dual core
• Realize rapid shutdown by simply powering o the transmitter or using an
external initiator
The Transmitter HT10 is part of Hoymiles Rapid Shutdown solution. When paired with Hoymiles rapid shutdown
HRSD and powered on, HT10 sends a “permission to operate” signal to HRSD, to make PV modules connected
in series and then connect to string inverter, thus producing power.
In case of emergency, PV system would enter module-level rapid shutdown mode by simply disconnecting the
AC powerof Transmitter or using an external initiator.