Pakistan Generator Rotor Earth Fault Protection Supply Case | Equivalent to SEG/Woodward XR-1

Project Overview

This article presents a practical Generator Rotor Earth Fault Protection Supply Case for an industrial client in Pakistan. The supplied protection relay is fully compatible with the functional standards of SEG/Woodward XR-1 rotor earth fault protection, dedicated to synchronous generator rotor winding insulation monitoring and fault protection.

As a local Pakistan electrical equipment distributor, Pacific Engineering delivered full-process services including technical confirmation, customized quotation, standardized production, safe transportation, remote commissioning and project acceptance, providing reliable power protection solutions for Pakistan’s industrial power generation projects.

Company Profile (Pacific Engineering)

Headquartered in Karachi, Pakistan, Pacific Engineering is a professional supplier focusing on electrical equipment distribution, industrial automation solutions, and medium & low-voltage power protection systems. We serve industrial power plants, EPC contractors, and manufacturing clients across Pakistan and Afghanistan.

Our core business covers power system protection relays, generator auxiliary equipment, industrial automation control components, and certified electrical spare parts. We adhere to strict international technical standards and supply specifications, providing one-stop services including technical matching, product supply, logistics delivery, on-site guidance and after-sales technical support for overseas power engineering projects.

Project Demand & Product Positioning

Client Demand

The Pakistan local industrial client needed a professional synchronous generator rotor earth fault protection device to solve the hidden danger of rotor winding insulation damage and earth faults in power generation units. The client clearly required the product to achieve full functional equivalence with SEG/Woodward XR-1 rotor earth fault relay, meeting the operating parameters and protection logic of local power generation equipment.

Core Technical Requirements

Combined with the client’s on-site generator operating conditions and XR-1 standard parameters, the project confirmed the following mandatory technical requirements, fully compliant with IEC 60255-1 power protection standards:

• Dual-stage protection logic: independent setting of rotor earth fault alarm and tripping thresholds
• Adapt to high and low impedance earth faults of generator rotor windings
• Support adjustable protection action delay to avoid false tripping
• Wide-range auxiliary power supply, adaptable to on-site AC/DC power conditions
• With fault data recording, parameter reset and password protection functions
• Equipped with standard communication interface and relay output terminals for system integration

Product Parameter Comparison (VS SEG/Woodward XR-1)

We completed full parameter matching and verification by retrieving official manuals and technical documents of SEG/Woodward XR-1. The comparison below proves that our protection device fully meets the replacement and equivalent application requirements:

Technical Parameter	SEG/Woodward XR-1 Standard	Our Supplied Device（AS-6085）	Matching Result
Earth Fault Alarm Threshold	20~140 kΩ (adjustable)	20~140 kΩ (adjustable)	Fully matched
Earth Fault Tripping Threshold	0~30 kΩ (adjustable)	0~30 kΩ (adjustable)	Fully matched
Action Delay Range	0~25s / 0~50s adjustable	0~50s full-range adjustable	Fully matched
Protection Object	Synchronous generator rotor winding	Synchronous generator rotor winding	Fully matched
Working Frequency	50Hz/60Hz adaptive	50Hz/60Hz adaptive	Fully matched
Certification Standard	CE / ISO / IEC 60255	CE / ISO / IEC 60255	Fully matched

It should be noted that generator rotor earth fault protection is available in injection type and ping-pong type. The two principles differ significantly. Special attention shall be paid during technical communication.

Technical Docking & Quotation Process

After receiving the client’s inquiry, we adopted a standardized technical verification and business docking process to ensure zero deviation between product performance and on-site demand, complying with overseas engineering project procurement specifications:

Step 1: Official Data Collection

We searched and sorted out the full official manuals, parameter sheets, protection logic descriptions and installation specifications of SEG/Woodward XR-1, sorting out core technical indicators and application limitations as the benchmark for product verification.

Step 2: Product Performance Comparison & Verification

Our technical team compared the self-developed rotor earth fault protection device with XR-1 in terms of protection function, parameter range, electrical performance and structural size, confirming that all technical indicators meet and partially exceed the original standard, supporting direct replacement and on-site retrofit.

Step 3: Professional Technical Docking

We sent complete product specifications, technical parameter sheets and certification documents to the client’s engineering team. Through multiple online technical communications, we confirmed the adaptability of the device to the client’s generator model, on-site voltage conditions and protection logic settings, eliminating technical risks before ordering.

Step 4: Formal Standardized Quotation

After technical confirmation, we issued a formal quotation with complete overseas trade terms, including the following clear and standardized terms:

• MOQ: Small batch customizable supply to meet project trial installation and batch procurement needs
• Delivery Time: Strict production cycle scheduling for overseas projects, guaranteed on-time delivery
• Payment Terms: Flexible and safe international trade payment methods, adapting to Pakistan project procurement habits
• Warranty Period: Long-term official warranty, with professional after-sales technical support
• Certifications: Complete CE, ISO and IEC standard certification documents, supporting project acceptance

Product Introduction: Generator Rotor Earth Fault Protection Device

Core Functions

This rotor earth fault protection device is specially designed for synchronous generator rotor loop protection, solving the safety hazards of rotor winding insulation aging, damage and earth faults. It supports two-stage protection of one-point grounding alarm and two-point grounding tripping, avoiding unit vibration, shaft magnetization and equipment burnout caused by rotor faults.

• Real-time monitoring of rotor winding insulation resistance, high-precision identification of high and low impedance earth faults
• Independent adjustable alarm and tripping thresholds + delay setting, effectively preventing false operation and missing protection
• Built-in fault recording function, which can store fault parameters for post-event analysis
• Password protection parameter setting to avoid misoperation of on-site personnel
• Standard communication and relay output interfaces, convenient for docking with industrial control systems and SCADA

Installation & Application Features

• Simple Structure: Standard cabinet-mounted design, compatible with the installation size of XR-1, supporting direct replacement and on-site retrofit without modifying the original cabinet structure
• Convenient Wiring: Clear screw terminal layout, standardized wiring sequence, reducing on-site installation errors
• Strong Adaptability: Wide-range AC/DC power supply, adaptable to complex power environment of Pakistan industrial power stations
• High Stability: Industrial-grade anti-interference design, suitable for long-term continuous operation in harsh industrial environments

Standardized Overseas Production & Quality Control

For all Pakistan and Afghanistan overseas projects, we implement stricter production and quality inspection standards than domestic orders to ensure product stability and compliance in cross-border application scenarios.

During this project production stage, we completed full-process quality control including component screening, aging test, parameter calibration, and function simulation test. Each device was fully debugged according to the client’s on-site parameter requirements before leaving the factory, ensuring that the protection logic, threshold accuracy and communication functions meet the project acceptance standards, with zero factory defects.

Professional Packaging & Land Transportation

In view of the long-distance cross-border transportation and bumpy road conditions in Pakistan, we adopted shockproof, moisture-proof and drop-proof professional export packaging for the equipment, equipped with fixed foam and waterproof film to avoid equipment damage and moisture failure during transportation.

The goods were delivered by standardized cross-border land transportation, with full tracking of logistics information. We completed customs declaration, document verification and goods handover in accordance with Pakistan’s import standards, ensuring safe and intact delivery of the equipment to the client’s project site.

Remote Commissioning Guidance & Project Acceptance

After the equipment arrived at the site, our professional electrical engineering team provided one-on-one remote installation guidance and commissioning services for the Pakistan client’s technicians.

We guided on-site personnel to complete equipment fixing, wiring inspection, parameter setting, protection logic debugging and simulation fault tests step by step. After confirming that all functions operate normally and the protection action is accurate and reliable, we assisted the client in completing on-site project acceptance and data filing. The equipment has been running stably on site since put into operation, meeting the long-term safe operation requirements of the generator unit.

Customized Supply & Technical Support

Pacific Engineering provides long-term stable supply and full-cycle technical services for power system protection equipment equivalent to SEG/Woodward XR-1. For EPC contractors, power plant owners and industrial engineering clients in Pakistan, Afghanistan and surrounding regions, we can provide:

• Equivalent replacement solutions for imported generator protection relays
• Custom parameter configuration and project-oriented technical docking
• Batch stable supply, fast delivery and complete certification documents
• Full-process after-sales services including remote commissioning, operation guidance and warranty maintenance

Contact us for generator rotor earth fault protection devices, medium and low voltage power protection systems, and industrial automation solution support. We provide reliable, cost-effective and fully compliant electrical equipment supply services for your overseas power engineering projects.