SPECIFICATIONS:
Part No: IC3650SGDB1
Manufacturer: General Electric
Series: Mark II
Product Type: Ground Fault Relay Card
Voltage Rating : 110V, 220V, 480V
Current Rating: 1A to 1000A
Operating Frequency: 50/60 Hz
Power Consumption: 5W
Operating Temperature Range: -10°C to +55°C
Weight: 0.45 kgs
Condition: New
Availability: In Stock
Country of Origin: USA
FUNCTIONAL DESCRIPTION:
IC3650SGDB1 is a Ground Fault Relay Card manufactured and designed by General Electric as part of the Mark II Series used in GE Speedtronic Control Systems. The primary function of the Ground Fault Relay Card is to monitor the balance of current between conductors in a system. Under normal operation, the current flowing through the phase conductors should be equal and opposite. However, when a ground fault occurs, current starts flowing to the ground, resulting in an imbalance. The relay card detects this imbalance and activates an alarm or a trip mechanism to disconnect the faulty circuit, thus protecting the system and preventing further damage.
FUNCTIONS OF A GROUND FAULT RELAY CARD:
- Fault Detection: The primary function of a Ground Fault Relay Card is to monitor the electrical system for any ground faults. A ground fault occurs when there is an unintended current flow from a live conductor to the ground, which can lead to hazards like electrical shocks or fires. The relay continuously measures the current and identifies any leakage to the ground, triggering an alert or trip action.
- Circuit Isolation: Upon detecting a ground fault, the relay card activates a protective mechanism that isolates the affected circuit. This quick disconnection prevents further damage to the electrical system, minimizes the risk of fires, and ensures the safety of both equipment and personnel.
- Current Imbalance Detection: Ground Fault Relay Cards monitor the balance of current between conductors (phase conductors). When a ground fault occurs, the current distribution becomes imbalanced, and the relay card detects this difference. This imbalance serves as a signal that a fault is present, prompting the system to take corrective action.
- Alarm Activation: Some Ground Fault Relay Cards are equipped with alarm functions that alert operators or maintenance personnel of a ground fault. This feature helps in providing early warning, enabling timely intervention, and preventing potential damage to electrical equipment.
- Protection of Equipment and Personnel: By detecting and isolating ground faults, the relay card protects sensitive electrical equipment and prevents electrical shocks that could harm workers or cause damage to machines. It is an important safety device, particularly in environments with high electrical loads or where personnel are near electrical systems.
FEATURES OF A GROUND FAULT RELAY CARD:
- Adjustable Sensitivity: Ground Fault Relay Cards often feature adjustable sensitivity settings. This allows operators to configure the card to detect fault currents of varying magnitudes, from small leakage currents to larger faults. The ability to fine-tune the sensitivity helps to tailor the protection to the specific needs of the system, ensuring both effective fault detection and minimal false alarms.
- Real-Time Monitoring: These relay cards provide real-time monitoring of electrical systems, ensuring that faults are detected immediately. By continuously analyzing the current flowing through the system, they provide live feedback and can trigger a quick response if an anomaly is detected.
- Trip and Reset Functions: When a fault is detected, the Ground Fault Relay Card can trigger a trip function to disconnect the affected circuit. Some models also include a reset function that allows the system to be manually reset after the fault has been cleared, restoring normal operation without the need for external intervention.
- Time Delay Features: Some advanced models of Ground Fault Relay Cards come with time-delay features. These delays can be configured to allow brief temporary conditions, like transient faults, to be ignored, preventing unnecessary trips. This feature ensures that only genuine faults are addressed without interrupting normal operations.
- Diagnostic Capabilities: Many Ground Fault Relay Cards offer built-in diagnostic tools that allow maintenance teams to monitor system performance and troubleshoot faults. These diagnostics often include logging fault events, tracking fault history, and providing system health reports to help identify recurring issues or trends.
- LED Indicators and Display: To aid in fault detection and system monitoring, Ground Fault Relay Cards often include LED indicators or digital displays. These visual cues provide immediate information about the status of the system, fault location, and operational conditions, making it easier for operators to assess and respond to issues.
- Compatibility with Other Protection Devices: Some Ground Fault Relay Cards are designed to work in conjunction with other protection devices, such as overcurrent relays or residual current devices (RCDs). This integration ensures a comprehensive approach to electrical protection, allowing multiple safety systems to work together to provide optimal protection.
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FREQUENTLY ASKED QUESTIONS:
What is the voltage range supported by Ground Fault Relay Cards?
Ground Fault Relay Cards typically support a voltage range of 110V to 480V AC or DC, depending on the model. Always verify the voltage specifications of the card to match your system requirements.
What is the maximum current rating for a Ground Fault Relay Card?
Ground Fault Relay Cards are available in a variety of current ratings, with typical models supporting up to 1000A. Some models can handle even higher currents, but it's important to choose a relay card with a current rating that matches your system's needs.
How accurate is the sensitivity of a Ground Fault Relay Card?
Ground Fault Relay Cards are designed to have high accuracy in detecting ground faults. Sensitivity can often be adjusted from 1 mA to 5A, depending on the model. The accuracy of fault detection depends on the system conditions and the card’s design, with most models offering ±5% accuracy.
