Description

Product Overview

The GE MLJ1005B010H00C is a digital synchromism check relay designed by GE, a leader in industrial technology. As part of GE’s comprehensive suite of power management and control products, this relay is crucial for maintaining the stability and integrity of AC power systems. It plays a pivotal role in interconnecting different parts of an AC system, ensuring that power is transferred smoothly and safely.

In power generation plants, for example, the GE MLJ1005B010H00C is used to verify the synchronization of generators before they are connected to the grid. This is essential as improper synchronization can lead to power surges, equipment damage, and grid instability. By accurately measuring parameters such as voltage, frequency, and phase angle, the relay determines whether two power sources are in a suitable condition for connection. Its continuous and manual operation modes offer flexibility, allowing operators to adapt to different system requirements.

Technical Specifications

Parameter Name	Parameter Value
Product Model	MLJ1005B010H00C
Manufacturer	GE
Product Type	Digital Synchromism Check Relay
Frequency	50 or 60Hz
Voltage Difference	± 9 V in 0.5 V steps
Phase Angle	0 ° to 360 ° in 1 ° steps
Frequency Slip	0.00 to 0.05 Hz in 0.01 Hz steps
Manual Mode Time	0.1 to 5 sec in 0.1 sec steps
Under Voltage Supervision	Enable/Disable
Line Voltage Live Level	40 to 140 % in 1v steps
Line Voltage Dead Level	10 to 100 % in 1v steps
Bar Voltage Live Level	40 to 140 % in 1v steps
Bar Voltage Dead Level	10 to 100 % in 1v steps
Synchronization Function	Enable/Disable
Dldb/Dllb/Lldb Units	Enable/Disable
Auxiliary Output & Input Config	Various configurations
Voltage Circuit Burden	0.15 va at 110/120V
Digital Inputs	24 – 48 VDC, 110 – 220 VAC ± 20 %
Digital Input Consumption	< 2 ma
Rated Voltage	60 to 220V AC
Maximum Voltage	240V AC
Auxiliary Power	24 – 48 VDC ± 20 %
Auxiliary Power Consumption	3W (standby), 6W (tripped)
Closing Contacts	Max operating voltage: 440 vac; continuous current: 6 A; breaking capacity: 4000va
Signalling Contacts	Max operating voltage: 380 vac, 220 vdc; continuous current: 8 A; breaking capacity: 1760 va
Physical Connection	RS 485/RS 232 plastic or glass fiber optics
Temperature Range	Operating: – 20 °C to + 55 °C; Storage: – 40 °C to 70 °C
Ambient Humidity	Up to 95 % without condensation
Dimensions	18 – rack, 4 units high
Weight	6.6 lbs (3 kg)

Main Features and Advantages

The GE MLJ1005B010H00C comes with a host of features that set it apart in the market. Its communication capabilities are top – notch, with support for RS 485, RS 232, and fiber optic communication. This enables seamless integration with other devices in the power system, allowing for remote monitoring and control.

It has the ability to measure voltage and frequency accurately, which is critical for synchronization tasks. The relay’s configurable auxiliary outputs offer flexibility in designing control systems. Whether it’s used in a small – scale industrial power setup or a large – scale utility grid, the continuous and manual operation modes provide the necessary adaptability.

As a modular system component, it can be easily incorporated into existing systems. The option of 2″ or 4″ independent modules and its compatibility with 1/4 or 1/8 standard 19″ rack cases make installation and system expansion convenient. The 3 – digit display also provides quick and easy access to important measurement and status information.

Application Fields

The GE MLJ1005B010H00C is widely used in power – related industries. In power generation, it is indispensable for synchronizing generators with the grid or with other generators during parallel operation. This ensures that electricity is fed into the grid without causing disruptions.

In industrial settings, such as manufacturing plants that have their own power generation systems or complex power distribution networks, the relay is used to manage the connection and disconnection of different power sources. It helps in maintaining stable power supply to critical equipment, minimizing the risk of power – related production stoppages.

In the energy distribution sector, for example, when power is being transferred between different substations or when backup power sources are being integrated into the grid, the GE MLJ1005B010H00C ensures that the synchronization process is smooth. This is vital for maintaining the reliability of the overall power distribution infrastructure.

Related Products

GE MLJ – series related models: There are likely other models in the MLJ series with different specifications. For example, some may have different voltage or frequency measurement ranges, or additional communication protocols, offering alternatives for specific application requirements.
GE power monitoring modules: These modules can be used in conjunction with the MLJ1005B010H00C to provide a more comprehensive power monitoring and control solution. They can collect and analyze data from various points in the power system, complementing the relay’s synchronization functions.
GE protective relays: Protective relays work alongside the GE MLJ1005B010H00C to safeguard the power system from faults. While the MLJ1005B010H00C focuses on synchronization, protective relays detect and isolate faults to prevent equipment damage and system outages.
GE communication interface units: These units enhance the communication capabilities of the MLJ1005B010H00C, especially when integrating it into more complex industrial networks. They can convert different communication protocols or improve the range and reliability of data transmission.
GE control panels: Control panels provide an interface for operators to manage and monitor the operation of the GE MLJ1005B010H00C and other related power equipment. They can be customized to display relevant information and allow for easy control of the relay’s functions.

Installation and Maintenance

Installation pre – preparation: Before installing the GE MLJ1005B010H00C, ensure that the power to the relevant section of the AC system is switched off to avoid electrical hazards. Check the physical mounting location, whether it’s a 19″ rack or other designated enclosure, to ensure it can support the relay’s weight and dimensions. Verify the compatibility of the relay with the existing power system in terms of voltage levels, communication interfaces, and control requirements. Thoroughly review the installation manual provided by GE, which contains detailed instructions on wiring, grounding, and proper module alignment.

Maintenance suggestions: Regularly inspect the GE MLJ1005B010H00C for any signs of physical damage, such as cracks in the casing or loose connections. Clean the relay periodically to remove dust and debris, as these can affect its performance, especially in high – humidity or dirty environments. Check the communication links regularly to ensure seamless data transfer. Periodically calibrate the voltage and frequency measurement functions according to the manufacturer’s guidelines to maintain accuracy. Keep an eye on the auxiliary power supply and its consumption, as any anomalies could indicate a problem with the relay’s internal components.

Product Guarantee

GE stands firmly behind the quality of the GE MLJ1005B010H00C. The product comes with a 1 – year warranty, during which GE will repair or replace the relay free of charge in case of any manufacturing defects. GE’s global technical support team is available to assist customers with installation guidance, troubleshooting, and answering any technical queries. In case of any issues, customers can reach out to GE’s customer service, who will ensure a prompt response. GE also offers a range of maintenance services and genuine replacement parts, ensuring that the GE MLJ1005B010H00C continues to operate at peak performance throughout its lifespan.

Brand model: GE MLJ1005B010H00C
Product Name: Digital Synchromism Check Relay
Warranty: 1 year
Size: 18 – rack, 4 units high
Weight: 6.6 lbs (3 kg)
Origin: USA
Inventory: Spot/Futures
Delivery time: Goods in stock will be dispatched within 3 days after payment
Order time: Goods will be dispatched within one month after payment

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