DA-820 Series

IEC 61850 native PRP/HSR computer

Native PRP/HSR ComputerFeatures

  • Intel Core i7 dual/quad core processor with Intel QM77 Express
  • 2 x 204-pin SO-DIMM ECC DDR3 sockets, supporting un-buffered
    ECC DDR3 1333/1600 memory at 1333 and 1600 MT/s, 16 GB max.
  • 6 USB 2.0 ports for high speed peripherals
  • 3 PCIe x1 slots and 2 PCI slots for expansion modules1 PCIe x16 slot for an additional video card
  • Highly reliable design, supporting dual power, RAID 0/1/5/10, and PRP/HSR technology (with PRP/HSR expansion module)
  • Cybersecurity function
  • IEC 61850-3 (general requirements for electrical substation
    automation, EMC Level 4, C3, Bm)
  • IEEE 1613 compliant (environmental and testing requirements for
    communications networking devices in electric power substations)
  • IEC 60255 compliant (measuring relays and protection equipment)


To learn more about DA-820 series expansion modules, please visit: http://www.moxa.com/product/DA-820-Series-Expansion-Modules.htm


The DA-820’s main operating system is based on the lntel Quad core i7-3612QE CPU and QM77 chipset, which supports standard X86, 2 VGA ports, 6 USB port, 4 Gigabit LAN ports, and 2 3-in-1 RS-232/422/485 serial ports. The DA-820 is equipped with a 4 SATA disk interface and supports RAID 0/1/5/10 functionality. The DA-820 is specifically designed for substation applications that require precise time synchronization and adherence to the IEC 61850-3 standards.The flexible design makes the DA-820 suitable for local SCADA, environmental monitoring, video surveillance, protocol conversion, and PRP/HSR redundancy applications. In addition, the cybersecurity function makes the DA-820 an ideal solution for secure network communication applications.

The DA-820 complies with the IEC 60255 standards to enable the protection of electrical relays in a smart substation. IEC 60255 is one of the most widely used standards for testing relays and protection equipment, and compliance ensures that the DA-820 will work reliably and seamlessly with IEDs (intelligent electronic devices) as a part of the robust substation automation system.

The housing is a standard 3U, 19-inch wide, rack-mounted rugged enclosure. This robust, rack-mountable design provides the hardened protection needed for industrial environment applications.

White Paper


Enabling Efficient and Visually Represented PRP/HSR Network Management


native PRP HSR computerCreating a network management interface of devices and systems using different protocols can create risks and management issues that compromise effectiveness and security for substation automation networks. An efficient and visually represented PRP/HSR network using power SCADA with specially designed management middleware can effectively avoid these problems........more



White Paper

Making Smart Substations Even Smarter: Enhancing Substation Reliability, Availability, and Maintainability

Smart Substation Computer White PaperThis paper sketches out a few of the more important concerns that electricity suppliers should account for when planning substation upgrades. The focus is on how best to increase the reliability, availability, and maintainability of power substation automation networks within the context of the IEC 61850 vision, to give electricity suppliers a clear idea of the design procedures, device tolerances, and hardware and software features they should expect from the engineers and manufacturers who design and build their networking and computing devices.......more


White Paper

Using MMS and SNMP to Integrate IT Management for Substation Automation

Using MMS and SNMP to Integrate IT Management for Substation AutomationThe devices that electrical substation automation systems are built from depend on highly precise, time-critical communications. Substation thus often use highly specialized monitoring systems to tackle this problem, but can approach it using different technologies. The most up-to-date, “smart” substations use the Manufacturing Messaging Specification (MMS) for communications among IEC 61850 intelligent electronic devices (IEDs), allowing SCADA to monitor and control IED states as well as process switchgear and transformer data directly. However, IT networking devices have been increasingly applied in IEC 61850 systems, and this equipment communicates using SNMP. Consequently, in the modern substation automation industry it’s clear that, for the time being, SNMP and MMS will continue to exist side-by-side. For designers and integrators of electrical substation equipment, bringing both MMS and SNMP support to IT equipment is an ideal, one-size fits-all alternative that allows for the greatest flexibility and adaptability around........more


Hardware Specifications
CPU • DA-820-C7: Intel dual core i7-3555LE 2.5 GHz processor
• DA-820-C8: Intel quad core i7-3612QE 2.1 GHz processor
OS (Optional) 64-bit Debian 7 or 64-bit Windows Embedded Standard 7
Note The OS is optional; you may purchase Windows Embedded Standard 7 via CTOS, or download Debian 7 from our website.
System Chipset QM77
BIOS SPI Flash 64 Mbit BIOS, PCI Plug & Play, ACPI function support
System Memory Max. 16 GB capacity (204-pin SO-DIMM x 2, each supporting un-buffered ECC DDR3 memory at 1333 and 1600 MT/s, 8 GB Max.)
USB • Rear panel: 4 USB 2.0 type A ports
• Front panel: 2 USB 2.0 type A ports
Built-in CFast socket: Optional Cfast card to store OS
Storage Expansion 4 SATA 2.0 interfaces, supporting RAID 0, 1, 5, 10, hot-swappable
Graphics Controller Intel® HD Graphics 4000
Display Interface 2 VGA outputs (DB15 female connector)
Resolution CRT display mode with pixel resolution up to 2048 x 1536 at 75 Hz
Ethernet Interface
LAN 4 auto-sensing 10/100/1000 Mbps ports• Ethernet 1 to 3: Intel 82574 Gigabit Ethernet Controller
• Ethernet 4: Intel 82579 Gigabit Ethernet controller supporting Intel AMT technology
Magnetic Isolation Protection 1.5 kV built-in
Serial Interface
Serial Standards 2 RS-232/422/485 ports (DB9 male)
Serial Signals
RS-422 TxD+, TxD-, RxD+, RxD-, GND
RS-485-4w TxD+, TxD-, RxD+, RxD-, GND
RS-485-2w Data+, Data-, GND
System Power, Storage
Gigabit LAN 100M x 4, 1000M x 4
Serial TX/RX
Programmable LED x 8
Switches and Buttons
Power Switch on/off (on rear panel)
Physical Characteristics
Housing SECC sheet metal (1 mm)
Weight 14 kg
Dimensions 361 x 440 x 133 mm (14.23 x 17.32 x 5.24 in) (without rackmount ears)
Mounting Standard 19-inch rackmount
Environmental Limits
Operating Temperature • DA-820-C8: -40 to 60°C (-40 to 140°F)
• DA-820-C7: -40 to 75 °C (-40 to 167°F)
Storage Temperature -40 to 85°C (-40 to 185°F)
Ambient Relative Humidity 5 to 95% (non-condensing)
Anti-vibration 2 Grms @ IEC-68-2-34, random wave, 5-500 Hz, 1 hr per axis
Anti-shock 20 g @ IEC-68-2-27, half sine wave, 11 ms
Power Requirements
Input Voltage • High Voltage: 100 to 240 VAC/VDC, 50/60 Hz, 1 A
• Low Voltage: 24 to 110 VDC, 4.7 A
Multiple Power Supplies • SP: Single power supply
• DP: Dual power supplies
Power Consumption 60 W
Standards and Certifications
Safety LVD, UL, cUL
Electrical Substation IEC 61850-3, IEC 60255, IEEE 1613
Protection Relay IEC 60255
EMC FCC, CE (Class A)
Green Product RoHS, CRoHS, WEEE
Alert Tools Built-in buzzer and RTC (real-time clock) with lithium backup battery
Automatic Reboot Trigger Built-in WDT (watchdog timer) supporting 1-255 level time interval system reset, software programmable
Warranty Period 3 years
Details See www.moxa.com/warranty
Software Specifications
OS 64-bit Linux Debian 7
File System EXT 4
Internet Protocol Suite TCP, UDP, IPv4, SNMPv1/v2c/v3, ICMP, ARP, HTTP, SSH 1.0/2.0, SSL, DHCP, NTP, NFS, Telnet, FTP, TFTP, PPP, PPPoE
Internet Security OpenVPN, Netfilter/iptables
Web Server (Apache) Allows you to create and manage web sites; supports PHP and XML
Secure Shell for Remote Access SSH allows remote logins to a secure encrypted console from any connected network
Dial-up Networking PPP Daemon for Linux that allows Unix machines to connect to the Internet through dialup lines, using the PPP protocol, as a PPP server or client. Works with ‘chat’, ‘dip’, and ‘diald’, among (many) others. Supports IP, TCP, UDP, and (
File Server Enables remote clients to access files and other resources over the network
Watchdog A watchdog timer that triggers a system reset upon software freezes, for both specific applications and system-wide failures.
Application Development Software • Moxa API Library (Watchdog timer, Moxa serial I/O control)
• GNU C/C++ cross-compiler
• GNU C library
• Perl
Software Package • SNMP
• SafeGuard technology
Windows Embedded Standard 7
Core OS • 64-bit support
• Remote Client
• Remote Procedure Call
Applications and Services Development • .Net Framework 3.5
• Remote Desktop Protocol 7.1
• COM OLE Application Support
• COM+ Application Support
Internet Services • Internet Explorer 8.0
• IIS 7.0
File Systems and Data Storage • Windows Data Access Components
• Windows Backup and Restore
Diagnostics • Common Diagnostic Tools
• Problem Reports and Solutions
Fonts Chinese (Trad. and Simp.), Japanese, Korean, Western, Middle Eastern, South East Asian, and South Asian Fonts
Graphics and Multimedia • MPEG DTV-DVD Audio Decoder (MPEG-2, AAC)
• MPEG Layer-3 Audio Codecs(MP3)
• MPEG4 Decoders
• Windows Media Video VC-1 (WMV) Codecs
• DirectX and Windows Device Experience
• Windows Media Player 12
• Create and Play DVDs
• Photo V
International • IME Simplified Chinese Support
• IME Traditional Chinese Support
• IME Japanese Support
• IME Korean Support
Management • Group Policy Management
• Windows Management Instrument (WMI)
• Windows Update
Networking • Extensible Authentication Protocol (EAP)
• Internet Authentication Service
• Telnet Server
• Bluetooth
• Domain Services
• Network Access Protection
• Network and Sharing Center
• Quality of Service
• Remote Access Service (RAS)
• Telephony A
Security • Credential Roaming Service
• Credentials and Certificate Management
• Windows Authorization Manager (AZMAN)
• Windows Security Center
• Active Directory Rights Management
• Security Base
• Encrypted File System (EFS)
• MS AntiMalware
• Windows
Enterprise Features • Enterprise Search Scopes
• BranchCache
• DirectAccess
• Windows XP Mode
Embedded Features • Enhanced Write Filter (EWF)
• File-Based Write Filter (FBWF)
• Message Box Default Reply
• Registry Filter
Embedded Self-Health Diagnostics SNMP-based remote scripting layer for monitoring, reporting, and control

To request a quote, indicate which items you are interested in below and click "Get a Quote".

Available Models

  Model No. Description
DA-820-C7-SP-HV i7-3555LE, dual-core 2.5 GHz, 100 to 240 VAC/VDC, -40 to 60°C, w/o CFast/RAM/OS
DA-820-C7-SP-HV-T i7-3555LE, dual-core 2.5 GHz, 100 to 240 VAC/VDC, -40 to 75°C, w/o CFast/RAM/OS
DA-820-C7-SP-LV-T i7-3555LE, dual-core 2.5 GHz, 24 to 110 VDC, -40 to 75°C, w/o CFast/RAM/OS
DA-820-C7-DP-HV i7-3555LE, dual-core 2.5 GHz, 100 to 240 VAC/VDC x 2, -40 to 60°C, w/o CFast/RAM/OS
DA-820-C7-DP-HV-T i7-3555LE, dual-core 2.5 GHz, 100 to 240 VAC/VDC x 2, -40 to 75°C, w/o CFast/RAM/OS
DA-820-C7-DP-LV-T i7-3555LE, dual-core 2.5 GHz, 24 to 110 VDC x 2, -40 to 75°C, w/o CFast/RAM/OS
DA-820-C8-SP-HV i7-3612QE, quad-core 2.1 GHz, 100 to 240 VAC/VDC, -40 to 60°C, w/o CFast/RAM/OS
DA-820-C8-SP-LV i7-3612QE, quad-core 2.1 GHz, 24 to 110 VDC, -40 to 60°C, w/o CFast/RAM/OS
DA-820-C8-DP-HV i7-3612QE, quad-core 2.1 GHz, 100 to 240 VAC/VDC x 2, -40 to 60°C, w/o CFast/RAM/OS
DA-820-C8-DP-LV i7-3612QE, quad-core 2.1 GHz, 24 to 110 VDC x 2, -40 to 60°C, w/o CFast/RAM/OS

Compatible Modules

DA-820 Series Expansion Modules
  Model No. Description
DA-IRIG-B-S-02-T IRIG-B expansion module, PCI interface, 1 fiber IRIG-B in, 1 DB9M in/out, 1 DB9M out
DA-IRIG-B-S-04-T IRIG-B expansion module, PCI interface, 1 fiber IRIG-B in, 1 DB9M in/out, 3 DB9M out
DA-PRP-HSR 2-port Gigabit Ethernet expansion module compliant with IEC62439-3 protocol for Moxa DA-820 series industrial computers
DE-GX02-SFP-T 2-port 1000 Mbps fiber card, SFP slot x 2, PCIe interface (SFP module excluded)
DE-FX02-SFP-T 2-port 100 Mbps fiber card, SFP slot x 2, PCIe interface (SFP module excluded)

Optional Accessories

  Model No. Description
Mini DB9F-to-TB Mini Female DB9 to Terminal Block
Mounts / Brackets / Drive Kits
  Model No. Description
HDD-DOOR-LOCK-82001 HDD kit with thermal hole for heat dissipation
DDR3-THERMAL-KIT-82001 Thermal kit for non-DDR3L SDRAM
FAN-KIT-82002 Fan kit with lock for heat dissipation if system is overheated when using high performance graphics card in the PCIe x 16 slot
FAN-KIT-82001 Fan kit without lock for heat dissipation if system is overheated when using high performance graphics card in the PCIe x 16 slot

Solutions for PRP/HSR Substations


Moxa's world first PRP/HSR integrated communication and computing solution designed to enable scalable and manageable PRP/HSR infrastructures. The solution is ideal for electrical substation automation and process automation systems that need zero recovery time to ensure the highest system availability and data integrity.