GE B30TG3HLHF8NH6

Product Overview

The GE B30TG3HLHF8NH6 is a Multilin B30 busbar protection relay designed for electrical substation protection and control systems. It belongs to GE's Universal Relay family and provides low-impedance differential protection for busbar installations.

The B30 combines protection, monitoring, metering, communication, and control functions in one integrated device. It helps detect internal busbar faults and initiate circuit breaker tripping to isolate the affected section quickly.

Technical Specifications

Parameter	Description
Brand	GE
Model	B30TG3HLHF8NH6
Product Series	Multilin B30
Product Type	Bus Differential Protection Relay
Protection Principle	Low-Impedance Differential
Mounting Platform	Horizontal Rack
Protection Application	Busbar Protection
Communication	Configuration-dependent
System Integration	Substation Protection and Control

Main Features

• High-speed bus differential protection.

• Restrained and unrestrained differential protection functions.

• CT saturation detection and ratio mismatch compensation.

• Breaker failure protection.

• Dynamic bus replica functionality.

• Integrated metering and event recording.

• Flexible communication and programmable logic capabilities.

Protection Functions

The B30 uses differential current calculations to identify abnormal conditions within the protected busbar zone. Its protection algorithm helps distinguish internal faults from external faults and normal operating conditions.

In addition, the relay supports breaker failure protection, CT trouble detection, and undervoltage supervision. These functions improve protection coordination and help maintain the reliability of the electrical distribution system.

Application Areas

• High-voltage substations.

• Medium-voltage distribution systems.

• Power generation facilities.

• Industrial switchgear.

• Electrical busbar protection panels.

• Centralized and distributed protection systems.

Installation and Maintenance

Install the relay in a compatible 19-inch rack and follow the approved wiring diagrams. Verify CT connections, protection settings, communication interfaces, and auxiliary power requirements before commissioning.