Transformer protection, control, measurement and supervision. Medium-voltage protection relay PST640
Description
The PST640 IED (Intelligent Electronic Device) is designed for the protection, control, measurement, and supervision of utility distribution substations and industrial power systems transformers.
Key Features
- Main and backup protection for transformer applications
- Transformer differential, instantaneous differential, and zero-sequence differential protection
- HV and LV current, voltage protection, and switch-onto-fault protection
- External protection
- Product information
- Resources
- FAQ
Description
Distribution system operators need protection and control devices that are reliable, secure, compatible, and easy to integrate with existing devices. But replacing your installed base was complicated and time-intensive—until now.
Our protection relays use a stable yet innovative platform with 20 years of successful experience. In one IED, you gain protection, control, measurement, and supervision functions.
PST640 supports Ethernet-based SNTP and dedicated IRIG-B time synchronization.
Fully interoperable with Hitachi Energy’s tools suite, the PS640 series can be used in isolated, resistance-grounded, compensated grounded, and solidly grounded networks. With our PS640 series which supports the IEC 61850 edition 2.0 communication protocol you can rely on high cybersecurity standards, as well as our long legacy in power systems, industry standards, and customer support.
No more complex configuration
This preconfigured device is easy to learn and use, providing a simple hardware architecture for your team to commission and maintain. Less training and engineering are needed, which saves you time and resources while improving safety.
PST640 supports a maximum of four setting groups, whose values can be modified from the local human-machine interface (LHMI) or the PCM600 configuration tool.
The PS640 PCM600 connectivity package provides a simple and easy interface: It fully integrates PCM600 without requiring any additional tools.
Features
Application features
• Provides transformer differential protection and comprehensive backup protection both for high-voltage and low-voltage winding
• Transformer differential protection, including instantaneous differential protection, and ratio restraint differential protection, zero-sequence which can be used for protecting against transformer phase-to-phase, winding inter-turn, and bushing faults
Human-machine interface features
• Equipped with large LCD screen
• Single line diagram (SLD) with circuit breaker position indication
• 11 preconfigured LEDs can be lit with red, yellow, or green light
• Local/remote control
Communication features
• Support IEC 61850 edition 2.0
• Supports SNTP and dedicated IRIG-B time synchronization
• Two Ethernet ports
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