Merlin Gerin 28 Circuit Breaker Module Installation

WARNING: Hazardous energy levels are present on bare conductors in the -48Vdc distribution connection area of the plant. Accidental shorting of distribution conductors can cause arcing and high currents that can cause serious burns or other physical harm. It is recommended that:

• Remove any jewelry, rings or watches while working on this equipment.

•Use insulated wrenches, screwdrivers, cutters, pliers and other tools.

The Merlin Gerin 28 Circuit Breaker Module requires two adjacent open module positions. The wiring support bracket is mounted directly above the Merlin Gerin 28 Circuit Breaker module. Position the wiring support bracket in the top open position. Use M5 hardware to secure the front lip of the wiring support bracket above the to the power system frame. Connect the two alarm cables to the controller backplane.

Figure 3.5-1 28 Circuit Breaker Module

Position the circuit breaker module below the wiring support bracket. Insert the module in the power system such that the holes in the module dc bus line up with the holes in the power system dc bus. Use M8 hardware to secure the buses together. Use M5 hardware to secure the front lip to the power system frame. Use M6 hardware to secure the rear of the module to the power system frame.

Connect the LVD power wiring to the power bus observing proper polarity. Connect the LVD control cable to the customer interface card.

The alarm signal of each individual circuit breaker [see Installing circuit breaker wiring (both types of circuit breaker modules) for specific alarm cable wiring instructions] is connected to a terminal block on the CB Interface Board (mounted directly above the circuit breaker module). Each alarm wire is placed in the terminal block position with the number corresponding to the position of the circuit breaker in the system. The CB Interface Board is connected to the controller via a 50-conductor cable that plugs into the J3 connector on the CB Interface Board. The 50-conductor cable splits into (2) DB-25 connectors that plug into connectors PL1A and PL1B on the controller backplane.

Magnum XS 450 Power System –48 VDC User’s Manual

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American Power Conversion XS 450 -48 Merlin Gerin 28 Circuit Breaker Module Installation, 1 28 Circuit Breaker Module
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XS 450 -48 specifications

The American Power Conversion (APC) XS 450 -48 is a reliable and efficient power supply solution designed for critical applications requiring a consistent and stable power source. This solution is particularly beneficial for telecommunications, data centers, and industrial settings where power reliability is paramount.

One of the key features of the XS 450 -48 is its ability to deliver 450 watts of continuous power, ensuring that connected devices receive uninterrupted power supply. Its 48-volt output makes it ideal for telecom requirements, where 48V systems are standard. The unit provides a compact and space-saving design, making it suitable for installation in rack-mounted configurations, optimizing the utilization of valuable real estate in server rooms or equipment racks.

The XS 450 -48 utilizes advanced technologies that enhance its performance and reliability. It is equipped with an active power factor correction (PFC) system that significantly reduces harmonic distortion. This feature not only improves system efficiency but also complies with various regulations concerning power quality. Additionally, the power supply includes built-in over-voltage protection, over-current protection, and short-circuit protection, ensuring that both the power supply and the connected devices are safeguarded against electrical faults.

The unit is designed for high efficiency, often exceeding 90% under full load conditions. This not only reduces energy costs but also minimizes heat generation, contributing to a quieter operation environment. The XS 450 -48's intelligent thermal management system allows it to operate in a range of temperatures, making it highly versatile and adaptable to varying environmental conditions.

Furthermore, monitoring and management capabilities are integrated into the XS 450 -48 with optional external monitoring systems. These systems provide critical insights, allowing technicians to track real-time performance metrics, detect potential issues early on, and perform preventive maintenance.

In conclusion, the American Power Conversion XS 450 -48 stands out as a robust power supply solution that combines reliable performance, advanced protection features, and high efficiency. Its design caters to the specific needs of telecommunications and data centers, making it an indispensable asset for maintaining the uptime and integrity of critical systems. With its range of features and reliability, the XS 450 -48 continues to be a preferred choice among professionals in the field.
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