GE C60K03HKH Transformer Protection System

Product Overview

The GE Multilin C60K03HKH is a comprehensive Transformer Protection and Management Relay within the Universal Relay (UR) platform. While the C60 series is often associated with breaker management, the K-model configuration is specifically tailored to protect small to medium-sized power transformers in utility and industrial substations. 

Technical Specifications

• Manufacturer: GE Multilin

• Series: UR Series - C60 (Transformer Configuration)

• Protection Functions:

• Transformer Differential (87T)

• Restricted Earth Fault (REF)

• Thermal Overload (49)

• Over/Under Voltage and Frequency (27/59/81)

• CT Inputs: 1 A or 5 A secondary (Scalable to 10,000 A primary)

• VT Inputs: Secondary ~100 VAC (Adjustable ratio)

• Communications: RS485, RS232, Optional Ethernet (Modbus, DNP3, IEC 61850)

• Diagnostics: Event recording and oscillography

• Environmental: -40°C to +60°C operating range; Conformal coating

• Design: Withdrawable case for easy maintenance

• Weight: 8 lbs (Approx. 3.6 kg)

Key Features & Engineering Advantages

• Precision Differential Protection: Provides fast, sensitive detection of internal transformer faults while remaining stable during external through-faults and transformer inrush currents.

• Advanced Thermal Management: Monitors winding temperatures using sophisticated thermal models, preventing insulation degradation and extending the service life of the transformer.

• Simplified Maintenance: The withdrawable case design is a major benefit for critical facilities; if a relay requires testing or replacement, the active electronic chassis can be pulled out without disconnecting any copper wiring from the back of the rack.

• Ruggedized Reliability: Featuring conformal coating as standard, this relay is built to resist moisture, salt, and corrosive gases found in coastal or heavy industrial processing plants.

• High-Fidelity Diagnostics: Built-in oscillography captures high-speed waveform data during a fault, allowing engineers to perform deep-dive post-mortem analysis to determine the exact cause of a trip.

• Flexible Communications: Supports modern digital substation standards like IEC 61850, enabling peer-to-peer communication (GOOSE messaging) for high-speed interlocking and coordination.