Alpha Technologies AMP24 HP - Manual (Page 13)

11 Doc. #: 0260011-J0 Rev B
2. Product Description
The Alpha Modular Power System 24 HP (AMPS24 HP) is a unique, high performance AC power
system that is designed to provide highly reliable back-up power to cable headend, telecom or
server room facilities.
The AMPS24 HP features hot swappable 1.5 kVA/1.2 kW AC power modules and optional 1.8
kW rectifier modules that are the building blocks of a highly reliable power system with 99.999%
availability, 93% efficiency, and high power density. A smart, unified controller with an integrated
Ethernet/SNMP monitors and manages both AC power modules and rectifier modules through
a remote web-based GUI. The AMPS24 HP is designed for installation in a climate-controlled
environment where ambient temperatures are between 0°C to 50°C (32 to 122°F).
2.1 Theory of Operation
AMPS modules feature a revolutionary high performance technology that combines the high reliability
of a telecom-grade inverter system with the high efficiency of a UPS.
Each AMPS module includes a reliable 48VDC-to-120VAC 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 93% 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.
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