NSD670 packet-based teleprotection for modern grids
NSD670 is Hitachi Energy’s new teleprotection solution for packet-based and hybrid communication environments, enabling fast, secure transmission of protection commands between substations. It helps utilities migrate protection communications from legacy to modern packet-based networks while maintaining speed, availability, and reliability.
Key highlights
- IEC 60834-1 compliant teleprotection for packet networks
- Hitless traffic protection for high availability
- Innovative Web HMI for configuration and diagnostics
- Advanced cybersecurity and data integrity
- Product details
- Specifications
- Resources
- FAQ
Overview
NSD670 is a packet-native and hybrid teleprotection solution designed to help utilities modernize protection communications while maintaining the speed, dependability, and security required for critical grid operations.
Built on field-proven mission-critical communication expertise, it enables the secure transmission of distance protection signals over Ethernet technology and packet-switched wide area networks.
Its modular design, application-aware supervision, and advanced diagnostics support line distance protection applications, while the Web HMI remote interface, redundant hardware, and strong cybersecurity features help simplify operation, maintenance, and long-term network evolution.
Functionality
- Helps utilities migrate teleprotection from legacy communications to packet-based networks
- Maintains high availability through redundant hardware, self-test diagnostics, and hitless traffic protection
- Strengthens cybersecurity with secure boot, role-based access control, certificate management, and authenticated data streams
- Simplifies operation and maintenance through a Web HMI for configuration, diagnostics, and supervision
- IEC 60834-1 compliant over packet technology for teleprotection applications
- Supports up to 8 fast, independent commands for flexible protection schemes
- Compact modular 3U half-19-inch design for flexible deployment
- Web HMI with browser-based access for configuration, diagnostics, event logs, and maintenance
- Application-aware supervision and continuous monitoring of communication performance
- Interoperable with FOX615 teleprotection solutions
Architecture
A secure and uninterrupted supply of electricity depends on comprehensive protection and control functions to ensure reliable power system operation. As electrical grids expand and become more complex, so do the demands on the protective devices and systems that must protect them and preserve system stability.
Protection equipment, together with communication links, enables fast and selective fault isolation on high-voltage transmission lines, transformers, reactors, and other critical electrical plant assets. By enabling faulty parts to be selectively disconnected and transferring commands in the shortest possible time, teleprotection systems help prevent failure and equipment damage.
Built on Hitachi Energy’s expertise with teleprotection, NSD670 is designed for fast, dependable, and secure operation of line distance protection applications over optical fiber, Ethernet/IP, MPLS-TP, IP/MPLS and layer 1 communication media.
- 1+1 Channel protection over geo-redundant paths
- Concurrent transmission over the two paths
- No switchover time (0 ms)
- Available from a single NSD670 device
- Redundant transmission paths can travel over different media or networks
- Channel redundancy with two independent NSD670 devices
- NSD670’s small form factor allows two devices installed side-by-side in a 19” setup
- Redundant transmission paths can travel over different media or networks
NSD670 provides interoperability with the FOX615 TEPI2 solution for line distance protection over packet-based WAN and direct fiber with end-to-end capabilities.
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