Operation

3.3.3Momentary Overloads

An overload in the critical load will continue to be supplied by the UPS system if the overload condi- tion does not exceed the current versus time curve of overload capacity for either the SCC rating or for the number of modules on-line.

For momentary overloads exceeding 155% of rated system (SCC) current, the static switch turns on for 40 milliseconds to provide current from the bypass line in parallel with current from the UPS sys- tem output. Up to 1000% of rated current can be supplied for less than one cycle, while up to 500% of rated load can be sustained for the full 40 milliseconds of pulsed-parallel operation. By providing two power sources simultaneously, high current can be supplied to the critical load with full output volt- age regulation. The critical load can be supported through inrush currents and momentary faults without operating the motorized circuit breakers. Pulse paralleling also serves, under some circum- stances, as a backup in the event that an external bypass feeder breaker (e.g., BFB) trips open during this pulse-paralleling period, retaining the UPS inverter connection with the critical load.

If an overload condition exceeds 40 milliseconds, the UPS system continues to supply power to the critical load if it remains within the current-versus-time curve of overload capacity. If the system overload capacity is exceeded, the UPS control logic at the SCC initiates an automatic transfer to the bypass line by operating the static bypass switch and the motorized system circuit breakers (SBB and UPS Output). Refer to 3.5 - Automatic Operations.

Figure 55 Momentary overload, pulsed static bypass switch

 

 

 

 

RIB

 

 

 

 

RIB

 

 

RIB

 

 

 

 

BFB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UPS #3

UPS #2

UPS

#1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CB1

 

 

CB1

 

 

CB1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SBS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BIB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

 

 

R

 

R

 

 

SBB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I

 

 

I

 

I

 

 

 

 

 

 

 

 

 

 

 

MBB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CB2

 

 

 

CB2

 

 

 

CB2

 

System

 

 

 

 

SKRU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Controls

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Output

MIB

 

 

 

 

 

 

 

 

 

SCCT

 

 

MBD

 

 

 

 

 

 

To Critical Load

 

 

 

 

 

 

 

 

 

 

 

 

MBD

 

 

 

MBD

 

 

 

 

 

 

 

 

 

SCCT

Battery

 

 

 

 

 

 

Battery

Battery

(can accommodate up to 6 UPS modules)

 

 

 

 

 

 

 

 

 

76

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Image 82
Emerson Series 610 manual Momentary Overloads, Momentary overload, pulsed static bypass switch
Page 81 Page 83

Series 610 specifications

The Emerson Series 610 is a cutting-edge solution for precise process measurement and control, designed specifically for industries where accuracy and reliability are paramount. This advanced instrument, often utilized in oil and gas, chemical processing, and water treatment sectors, combines innovative technology with robust features to meet the demanding requirements of modern industrial applications.

One of the standout features of the Series 610 is its exceptional measurement accuracy. The device employs advanced sensor technology that enables precise determination of variables such as pressure, temperature, and flow. This accuracy translates into improved process efficiency and enhanced product quality. With a wide range of measurement capabilities, the Series 610 can handle varying process conditions and fluid types, making it versatile across different applications.

The heart of the Emerson Series 610 lies in its intelligent diagnostics and predictive maintenance functionalities. This built-in technology allows for real-time monitoring of the device's operational status, providing valuable insights into performance trends. By detecting anomalies early, users can take proactive measures to prevent potential failures, thereby reducing downtime and maintenance costs.

Moreover, the Series 610 is designed with user-friendly features. Its intuitive interface and easy-to-navigate menus facilitate quick setup and configuration, enabling operators to be productive from the outset. The device also supports various communication protocols, including HART and FOUNDATION fieldbus, ensuring seamless integration into existing control systems and enhancing overall automation capabilities.

Another notable characteristic of the Emerson Series 610 is its robust construction. Designed to withstand harsh environmental conditions, it is built with durable materials that offer high resistance to corrosion and physical damage. This durability ensures longevity and reliability, even in the most challenging industrial environments.

In summary, the Emerson Series 610 represents a significant advancement in process measurement technology. With its exceptional accuracy, intelligent diagnostics, user-friendly design, and robust construction, it is an ideal choice for industries seeking to enhance their operational efficiency and reliability. Its ability to seamlessly integrate into existing systems further solidifies its position as a leading solution in the field of industrial measurement and control. As industries continue to evolve, the Series 610 is poised to meet the challenges of the future with confidence and precision.
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