Alpha Technologies AMPS80 HP - Manual (Page 12)

Doc. #: 026-069-B0 Rev F 10
2. Product Description
The Alpha Modular Power System 80HP (AMPS80 HP) is a unique, high performance AC and hybrid AC/
DC power system that is ideally suited to provide highly reliable back-up power to cable headend, telecom or
server room facilities.
The AMPS80 HP features hot swappable 2.5 kVA/2.0 kW inverter modules and optional 1.8 kW rectifier mod-
ules that are the building blocks of a highly reliable power system. A smart, unified controller with an integrat-
ed Ethernet/SNMP monitors and manages both inverter and rectifier modules through a web based GUI and
a local LCD touch screen. The AMPS80 HP is designed to be installed in a climate-controlled environment
where ambient temperatures are between -20°C to 40°C.
2.1 Theory of Operation
Each AMPS module includes a reliable 48 VDC to 120 VAC inverter as well as an AC-to-DC rectifier. When
AC Mains is available, AC power is converted to a high voltage DC bus, which is then converted back to
AC. In this high performance (HP) mode, AMPS delivers fully conditioned, line-regulated telecom-grade AC
power with 94% system efficiency.
When AC Mains is unavailable, DC battery power is converted to AC with zero transfer time. An intelligent
high voltage DC bus decides when to draw power, and how much power to draw, from AC or DC source.
During AC input brownout condition, output power is supplemented by battery power.
AC to DC input transfer can also be automatically triggered via the system controller to enable advanced
operation such as utility peak shaving.
In case of a fault, advanced DSP controls allow the AMPS module to isolate itself, while the rest of the system
continues to power the load (with reduced output).
DSP
Telecom Grade
AC Output
DC In
AC
Mains
communication
CAN bus external
Dual redundant
synchronization
communication and
between modules