Product Overview

The ABB SYN5202a-Z, V221 (3BHB006715R0221) is a synchronization check relay module designed for industrial and power system automation. It belongs to ABB's line of protection and control devices, widely used in electrical substations, power generation plants, and grid synchronization applications. This relay ensures safe and reliable synchronization of power sources (e.g., generators, grids) by verifying voltage, frequency, and phase angle matching before closing circuit breakers.

Key Features

1. Synchronization Check Functionality

   • Compares voltage magnitude, frequency, and phase angle between two AC sources (e.g., grid and generator).
   • Provides output signals to enable/disable circuit breaker closure based on preset synchronization criteria.

2. Adjustable Parameters

   • Configurable voltage difference threshold (±ΔV).
   • Adjustable frequency difference limit (±Δf).
   • Phase angle tolerance settings (±ΔΦ).

3. Input/Output Capabilities

   • Voltage Inputs: Dual AC voltage inputs (e.g., 100–240V AC/DC) for measuring two independent sources.
   • Binary Inputs/Outputs: Programmable contactors for control signals and alarms.

4. Communication Interfaces

   • Optional communication modules (e.g., Modbus RTU, IEC 61850) for integration into SCADA systems or ABB's Relion® protection platform.

5. Robust Design

   • Compact, DIN rail-mountable housing.
   • Wide operating temperature range (-25°C to +70°C).
   • High immunity to electromagnetic interference (EMC compliance).

Technical Specifications

• Supply Voltage: 24–250V AC/DC (depending on variant).
• Frequency Range: 50/60 Hz (±10%).
• Relay Contacts: 4–8 CO (changeover) contacts, rated for 5–10A.
• Standards Compliance: IEC 60255, IEEE C37.90, CE, UL.

Applications

• Grid Synchronization: Ensuring safe connection of generators to the power grid.
• Microgrids/Islanded Systems: Synchronizing distributed energy resources (DERs) with main grids.
• Industrial Plants: Managing backup power sources during grid outages.

Ordering Information

• Model: SYN5202a-Z, V221
• ABB Order Code: 3BHB006715R0221