DS3820NGDB - Field Ground Protection Module

SPECIFICATIONS:

Part No: DS3820NGDB
Manufacturer: General Electric
Series: Mark IV
Product Type: Field Ground Protection Module
Field Ground Resistance Range: 1 - 20 k Ohm
Input Voltage: 400V to 11kV AC
Field Winding Capacitance: 1–10 µF
Power Requirements: 24V DC,
Maximum Field Voltage: 600Vdc
Field voltage measurement range: 15-800 Volts
Impulse voltage withstand: EN60255-5
Input Voltage Frequency: 50Hz
Dimensions: 150 mm x 100 mm x 30 mm
Mounting: Standard mounting
Operating Temperature: -40°C to +70°C
Country of Origin: USA
Availability: In Stock

FUNCTIONAL DESCRIPTION:

DS3820NGDB is a Field Ground Protection Module manufactured and designed by General Electric and is part of the Mark IV Series used in GE Speedtronic gas turbine control systems. The GPM-F field ground protection module operates alongside the Multilin G60 to identify ground faults in a generator's field winding. Designed for versatility, it supports configuration for single-point or double-point injection, depending on specific application needs. The solution features two-stage field ground fault detection, supervision of injected voltage and current, brush lift-off monitoring, field overcurrent and undercurrent elements, and precise field ground fault location.

Field ground protection detects ground faults in a generator's field winding, safeguarding the generator from severe damage and enhancing its operational longevity. The GPM-F field ground protection module, designed to work with the Multilin G60, identifies ground faults in the generator’s field winding. Offering flexibility, it can be set up for single-point or double-point injection to suit different application needs.

KEY BENEFITS OF FIELD GROUND PROTECTION MODULE:

• Delivers advanced protection against field ground faults in generator systems.
• Supports both single-point and double-point injection methods, offering flexibility to match system requirements.
• Minimizes generator downtime by pinpointing faults within the field winding when using the single-point injection setup.
• Seamlessly integrates with Multilin’s renowned G60 Generator Protection System.
• Ensures continuous monitoring and safeguarding of the generator during idle, startup, and operational phases, promoting extended equipment lifespan.
• Simplifies system setup by configuring the Field Ground Protection Module via the G60 Generator Protection System and user-friendly EnerVista Setup Software.
• Enhances generator durability by enabling straightforward upgrades to the G60 relay with the Field Ground Protection Module.

FEATURES OF FIELD GROUND PROTECTION MODULE:

Key features include two-stage field ground detection, supervision of injected voltage and current, brush lift-off detection, field overcurrent and undercurrent elements, and fault location capabilities. For generators with a rated field voltage of up to 600 Vdc, a single-box solution is available. For field voltages ranging from 600 to 800 Vdc, an external resistor box is provided to ensure safer installation and operation.

• Two-stage field ground resistance-based element- 64F
• Wide range fault resistance coverage (1- 500Kohms)
• Injection frequency range 0.1 – 3Hz based on field winding capacitance
• Fault location feature while using single-point injection
• Brush-lift off detection
• Injection blocking input for field flashing condition
• Supports redundant G60 configurations
• The field over current and field under current elements using dcmA input of G60

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FREQUENTLY ASKED QUESTIONS:

What is the Field Ground Protection Module (GPM-F)?

The Field Ground Protection Module (GPM-F) is a device that protects the generator’s field winding by detecting ground faults, preventing significant damage, and maximizing the operational life of the generator. It works in conjunction with the Multilin G60 Generator Protection System for enhanced fault detection and protection.

How does the GPM-F module detect ground faults in a generator's field winding?

The GPM-F continuously monitors the generator's field winding for any ground faults. When a fault is detected, it alerts the system and isolates the fault to prevent further damage, ensuring the generator remains operational for a longer period.

How is the Field Ground Protection Module configured?

The configuration of the GPM-F is simplified through the Multilin G60 Generator Protection System and the EnerVista Setup Software, allowing easy setup and quick system integration. This reduces configuration time, making it more efficient and user-friendly.