1. Product Overview

2. Main Technical Parameters

2.1 Electrical Parameters

2.2 Channel Parameters

2.3 Environmental & Protection Parameters

3. Product Features

• Microprocessor-based Design: Equipped with intelligent processing capability to realize complex monitoring functions for power system operation.
• Self-monitoring System: Built-in hardware and software self-inspection mechanisms to ensure maximum operational reliability of the equipment.
• Multi-channel Monitoring: Supports multiple independent alarm channels with individually adjustable delay time for each channel.
• Dual Visual & Audible Alarm: Adopts dual alarm modes with indicator lights and buzzer for intuitive and effective fault reminder.
• Modular Structure: Capable of independent operation or combined assembly, facilitating system expansion, daily maintenance and equipment replacement.
• Diversified Communication Interfaces: Compatible with optical fiber and electrical data bus connection modes to adapt to different system networking scenarios.
• Remote Configuration Function: Supports remote parameter setting, module grouping and expansion interface configuration to improve operation efficiency.

4. Structure and Composition

• Alarm Modules: The unit is equipped with 4 independent 16-channel alarm modules as the core signal acquisition and alarm components.
• Power Supply Module: Provides stable and continuous power supply for the entire device unit.
• Connection Module: Includes SPA-ZC2 interface module and other matching connection accessories for system docking.
• Front Panel Display: Adopts 4-digit clear display to realize first-level alarm indication and real-time status display.
• Expansion Interface: Reserved dedicated interface for connecting SACO 128R4 relay expansion module to expand output channels.

5. Application Fields

• Power Plants: Real-time monitoring of various alarm signals and contact states in power plant monitoring systems.
• Substations: Power distribution monitoring and equipment protection signal monitoring for power transmission and transformation systems.
• Industrial Process Facilities: Real-time signal monitoring and fault alarm for industrial automated production processes.
• Marine & Offshore Applications: Stable and reliable operation adaption in harsh marine and offshore working environments.
• Distributed Systems: Seamlessly integrated into sequence of event recording and signal monitoring systems for distributed power systems.

6. Installation and Maintenance Guidelines

6.1 Installation Instructions

• The SACO 64D4 can be used as a standalone unit or combined with multiple SACO 64D4 sub-racks for integrated system deployment.
• For installation in the SPACOM series cabinet, a 1U height space (approximately 44mm) is recommended for reserved installation clearance.
• Supports optical fiber bus connection to build a complete system integrating equipment monitoring, sequence of event recording and data acquisition functions.

6.2 Maintenance Key Points

• Regular daily status inspection by utilizing the built-in self-test function of the unit to ensure normal equipment operation.
• The unit can quickly identify system faults and trigger alarm prompts once abnormal operating conditions occur.
• Fault analysis can be carried out after alarm channel triggering, assisting maintenance personnel in formulating targeted corrective and maintenance measures.

7. Compliance Standards