Milpower Source M359-1, Руководство пользователя

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MPS Doc: M359_USER_MANUAL REV G January 17, 2010 Page 4 of 30
1. General Description
1.1. Intended Applications
The M359 is a high quality, rugged, 2.0kW/2.2kVA, 19” rack-mounted, Uninterruptible
Power Supply (UPS). It fully complies with all the requirements of MIL-STD-1399
(Section 300) and is specifically designed to meet the harsh military shipboard
environment. The high reliability and ruggedness of the M359 make it an excellent
choice not only for military shipboard applications, but for critical shore-based
applications as well.
1.2. Functional Overview
The M359 consists of two main sections: Passive Power Conditioner and Active UPS
Section (see Fig. 1). The Power Conditioner is an isolation transformer with RFI
filters and spike absorbers. In case of a UPS failure, internal power relays allow the
User to bypass the UPS section and feed the load directly from the output of the
passive Power Conditioner. Thereby retaining the galvanic isolation, the surge
protection and the noise filtering provided by the transformer and filters.
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The UPS Section of the M359 is composed of a Low Input Distortion (LID) AC-to-DC
Converter, Plug-in, (hot-swap) Battery Pack, Battery Charger, DC-to-AC Inverter,
micro-controller-based Control Circuit and an SNMP Ethernet agent.
The LID AC-to-DC Converter is a high frequency switching converter that converts
the 115Vac/60Hz input to the 270VDC output required for the DC-AC inverter. Unlike
standard AC-to-DC converters (or even “high-power-factor converters”), the input
current that the LID AC-to-DC converter draws from the input source is a clean sine
waveform with very low harmonic distortions. This unique property enables the M359
to fully meet the stringent requirements of MIL-STD-1399 (Navy).
The Plug-in Battery Pack is a disposable unit, composed of eleven 12V/5AH lead-
acid cells (sealed, lead-acid, high discharge rate, maintenance-free cells), and a
temperature sensor. It provides 5 minutes of hold up time at 2KW and 10 minutes at
1.5KW. The Battery Pack is not a serviceable item, cannot be disassembled, and
can only be replaced as a single unit.