Alpha Technologies Te45 - Manual (Page 47)

Alpha Technologies Ltd. 057-106-C0 Rev D
Burnaby, British Columbia. Telephone: 604 436 5900 Fax: 604 436 1233. Page 38 of 38
9 Alpha conventions
9.1 Numbering system
Alpha Technologies uses an eight-digit drawing number system, which is broken into three blocks. The first three
digits describe the category of the product; e.g., rectifier or fuse panel. The next three digits indicate the sequence
in which the product number was allocated in a particular category. The last two digits indicate the type of drawing,
for example:
“-06” Outline drawing
“-08” Customer connections
“-20” Main assembly
Alpha Technologies uses an eight-digit part numbering system for all components and sub assemblies. Each part is
covered by its own unique number. Due to the quantity, categories will not be listed within this manual.
9.2 Acronyms
Acronym Definition
AC Alternating current
AWG American wire gauge
BTU British thermal unit
CSA Canadian Standards Association
CX Cordex ™ series; e.g., CXC for Cordex system controller
DC Ground fault circuit interrupter
EVS Emergency ventilation system
HVAC Heating, ventilating, and air conditioning
MGB Master ground bus
NEMA National Electrical Manufacturers Association
RAM Random access memory
RU Rack unit (1.75")