UPS Multi-Module Installation

3.2.4Control Cables Intermodule Control

Shielded and double insulated control cables available in lengths of up to 30 meters must be intercon- nected in a ring configuration between UPS modules as shown below. The parallel control board is mounted on the top, behind protective cover of each UPS module (refer to Figure 44). The ring config- uration ensures high reliability of the control (refer to Figure 31).

Figure 31 Connection of 1+N system parallel control cables

 

1

 

 

2

 

 

3

UPS

 

4

 

 

5

 

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

Parallel Board

Parallel Board

Parallel Board

Parallel Board

Parallel Board

Parallel Board

X3

 

P5

X3

 

P5

X3

 

P5

X3

 

P5

X3

 

P5

X3

 

P5

 

 

X4

 

 

X4

 

 

X4

 

 

X4

 

 

X4

 

 

X4

X2-2

X2-1

X2-2

X2-1

X2-2

X2-1

X2-2

X2-1

X2-2

X2-1

X2-2

X2-1

P2

 

P1

P2

 

P1

P2

 

P1

P2

 

P1

P2

 

P1

P2

 

P1

X1-1

X1-2

X1-1

X1-2

X1-1

X1-2

X1-1

X1-2

X1-1

X1-2

X1-1

X1-2

P3

 

P4

P3

 

P4

P3

 

P4

P3

 

P4

P3

 

P4

P3

 

P4

3.3Hot-Standby UPS Modules

3.3.1Cabinet Installation

Place the UPS modules side by side and interconnect as shown below.

The hot standby mode comprises two series-connected UPS modules of the same rating. One module is designated as the hot standby master (downstream), and the other module is designated as the hot standby slave (upstream). Their roles are determined by power connection and configuration soft- ware. In normal operation, both slave and master operate in normal mode and the output from one upstream (slave) UPS feeds the bypass input to the other (downstream, master) UPS. The output of the downstream (master) UPS is connected to the critical load and is always synchronised to the out- put of the upstream (slave) UPS. If the inverter of the UPS connected to the load fails, the inverter of the upstream (slave) UPS supplies the load through the downstream (master) UPS bypass circuit. The system can be programmed to cycle the downstream (master) UPS between normal mode and bypass mode so that both UPS units are equally exercised.

NOTE

If it is a hot-standby system, the master must be turned on first.

3.3.2External Protective Devices

Refer to the instructions in 1.0 - Single Module UPS Installation.

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Emerson 50 and 60 Hz, 400V, 30-200kVA user manual Hot-Standby UPS Modules, Control Cables Intermodule Control
Page 59 Page 61

30-200kVA, 400V, 50 and 60 Hz specifications

The Emerson 400V, 50 and 60 Hz, 30-200 kVA is a robust and versatile power solution designed for various industrial and commercial applications. This equipment delivers a reliable source of power, ensuring operational continuity and efficiency for numerous critical systems.

One of the standout features of the Emerson 400V series is its exceptional load handling capability. With a kVA range of 30 to 200, it can cater to both small-scale operations and larger enterprises, making it a flexible choice for businesses looking to scale their operations. The dual frequency capability of 50 and 60 Hz allows the system to be utilized in various geographical locations, accommodating different regional power standards.

The series is built with advanced power electronics technology, resulting in a highly efficient energy conversion process. This technology not only boosts performance but also reduces energy losses, leading to significant cost savings in operational expenditures. Moreover, the Emerson 400V solution is designed with an emphasis on minimizing harmonic distortion, ensuring that it meets stringent regulations and preserving the integrity of sensitive electronic equipment.

Another critical characteristic of the Emerson 400V series is its modular design. This allows for easy upgrades and maintenance, ensuring that businesses can adapt their power solutions as their needs evolve. The system features a user-friendly interface for monitoring and managing power loads, enhancing operational oversight.

Additionally, the Emerson 400V series emphasizes robust safety features to protect both equipment and personnel. Integrated protection mechanisms, such as overload and short-circuit protection, provide peace of mind and safeguard against potential power-related incidents.

In terms of physical design, the unit is built for durability, capable of withstanding harsh operating environments while maintaining performance integrity. The compact footprint ensures that it can fit into various spaces without sacrificing power output.

Overall, the Emerson 400V, 50 and 60 Hz, 30-200 kVA system represents a comprehensive power solution that combines high efficiency, adaptability, and advanced technology, making it an ideal choice for organizations aiming for reliable power management and operational excellence.
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