H. Input / Output EMI / RFI Filters

2.3System Operation

The UPS shall operate as an on-line, fully automatic system in the following modes:

A. NORMAL - Incoming AC power is boosted using a chopper circuit,

and converted into DC power. The DC power is then used to charge the battery bank while at the same time providing clean, DC power to the inverter circuitry. The inverter converts DC power to regulated AC power which feeds the load.

B. EMERGENCY - Upon failure of commercial AC power, the UPS shall derive power from the battery bank and continue feeding the load with clean, regulated AC power. There is no interruption to the critical load upon failure or restoration of commercial AC power.

C. RECHARGE - Upon restoration of the commercial AC source, the rectifier/chopper powers the inverter while simultaneously recharging the battery bank. The UPS shall have the following recharge process:

a)a constant level of current is used to recharge the batteries (the process shall utilize a current-limit function to prevent overcharging batteries, thus extending the life of the batteries)

b)as the batteries reach the normal charge level, a constant-voltage control shall begin which causes the battery recharge current to gradually decrease

c)Under normal operation, the UPS battery bank "floats" at the 2.25-2.27 volts per cell DC level to stay fully charged and ready for the next discharge.

D. BYPASS MODE - Upon detection of an internal fault or output overload, the UPS shall automatically switch from inverter power to an internal bypass via the static switch. Transfer shall be within 4 milliseconds, causing no interruption to the critical load. While in bypass, the UPS shall protect against spikes and common/normal mode noise by utilizing a dual-winding output isolation transformer. “Return from Bypass mode” shall be an automatic function, without interruption to the critical load. Transfer to Bypass may also be performed as a manual operation via the UPS front panel.

E. POWER CONDITIONING MODE - Should the batteries be removed from the UPS, the UPS shall continue to function and still provide

4200FA 50kVA XT

September 6, 2004

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Toshiba 4200FA specifications September 6
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4200FA specifications

The Toshiba 4200FA is a multifunctional printer that stands out in both small office and corporate environments. Esteemed for its reliability and efficiency, the Toshiba 4200FA offers businesses a versatile solution for their printing, scanning, copying, and faxing needs. One of its primary strengths is the ability to handle large print volumes, which makes it an ideal choice for high-demand settings.

Equipped with advanced printing technology, the Toshiba 4200FA delivers impressive print speeds of up to 42 pages per minute. This speed allows users to complete large jobs quickly, significantly minimizing downtime in busy workplaces. The device supports various paper sizes, ranging from standard letter to legal and custom dimensions, meeting diverse business requirements.

The resolution of up to 1200 x 1200 dpi ensures that printed documents are sharp and professional, suitable for both internal communications and customer-facing materials. Moreover, the Toshiba 4200FA is designed for user-friendliness, featuring an intuitive touch-screen interface that simplifies navigation, making it easy for employees to operate the machine without extensive training.

In terms of connectivity, the Toshiba 4200FA is equipped with multiple options including USB, Ethernet, and Wi-Fi capabilities, enabling seamless integration into existing workflows. Additionally, it is compatible with various mobile printing solutions, allowing users to print from their smartphones and tablets directly, which is increasingly essential in today’s mobile-centric work environments.

Security is also a priority for the Toshiba 4200FA. With features such as secure printing, user authentication, and data encryption, the device ensures that sensitive information remains protected against unauthorized access. This is particularly valuable for organizations that handle confidential documents.

Sustainability is another noteworthy aspect. The Toshiba 4200FA incorporates energy-efficient technologies that reduce power consumption during both operation and standby modes. Its long-life consumables and duplex printing capabilities further contribute to reducing overall waste and operational costs.

In summary, the Toshiba 4200FA is a robust multifunction printer that offers excellent speed, quality, versatility, and security, making it a valuable addition to any business environment looking to enhance productivity and efficiency while maintaining control over costs and resources.
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