RWB-400Z Series digital microcomputer protection device
Key attributes
| Brand | RW Energy |
| Model NO. | RWB-400Z Series digital microcomputer protection device |
| Rated voltage | 230V ±20% |
| Rated frequency | 50（Hz） |
| Electric energy consumption | ≤10W |
| Rated current in | 5A or 1A |
| Series | RWB |
Product descriptions from the supplier
Description ：
RWB-200 Series digital microcomputer protection device is suitable for low current/small resistance grounding system of 35kV and below, which integrates functions of protection、control、communication and monitor. The device uses component programmable design ideas to reduce maintenance workload and spare parts. It can flexibly meet the needs of a variety of applications, and is the ideal replacement production for traditional electromagnetic relay protection.
Main function introduction:
Main protection relay functions: three stages phase-current protection, zero-sequence current protection, Negative sequence current protection, inverse-time protection, overload component, reclosing, frequency protection, undervoltage/overvoltage protection, zero sequence phase overvoltage protection, Motor start fast break protection, Negative sequence overcurrent, overheat protection.
Control functions: Lockout, circuit-breaker control.
Communication functions: Using the RS485 interface of the device passing Modbus RTU Communication protocol link to SCADA system; realizable Events\Faults and Measurands viewing, executing remote command, Time synchronizing, Viewing and Changing Settings
Data Storage functions: Event Records, Fault Records, Measurands.
Remote signaling remote measuring, remote controlling function can be customized address.
Technology parameters:
Device structure:
Device terminal definition diagram:
Installation Diagram：
By using Modbus RTU protocol through RS485 interface, remote signaling, telemetry, and remote control addresses can be customized according to engineering requirements, seamlessly integrating with SCADA or energy management systems.
Support. Equipped with standard three-phase primary reclosing function, and can be configured with front acceleration or rear acceleration protection to enhance power supply continuity.
RWB-400Z is more comprehensive in terms of functionality, suitable for systems of 35kV and below, supports more protection types (such as negative sequence overcurrent, overheating protection, motor starting speed trip, etc.), and has slightly higher power consumption (≤ 10W), suitable for complex working conditions.
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