ABB MDAR Instruction Manual page 10

I.L. 40-385.5
Also, MDAR (REL-300)'s continuous self checking
diagnostics and failure alarm forewarns operations of
problem areas, permitting prompt corrective actions.
1.3.3 The MDAR (REL-300) is designed for the
maintenance department
MDAR (REL-300)'s compact drawout design with a
front panel operator's interface and test switches pro-
vides for easier installation and testing. The hard-
ware design simplicity utilizing minimum components
of proven reliability, self checking diagnostics and
failure alarm make the MDAR (REL-300) virtually
maintenance free. All of these contribute to saving
maintenance program time, effort, travel and cost to
keep relays in the proper operating condition.
1.3.4 The MDAR (REL-300) is designed for utility
management
It provides management the means to effectively
address cost reduction and customer service goals
through assuring the implementation of MDAR (REL-
300) and related technologies to their full advantage.
1.4 BENEFITS
There is no question of the potential benefits the
microprocessor can bring to the system protection
function, as well as the overall operation of the elec-
tric utility. The implementation of these technologies
will be paced as we gradually grow into the future,
changing and improving our concepts of operating
requirements.
And we have with MDAR (REL-300), a product
designed for today's requirements and tomorrow's
solutions, simply and logically.
1-2
1.5 REFERENCES:
Catalog number presently available at this applica-
tion are: (the last digit "C" represents the "China soft-
ware" version 2.60 as described for step A
modifications)
MD-3A2SPFRC 3-pole trip, 1 amp ct, 250 Vdc,
with OSB, Pilot system, FT-
switch and RS-232 communica-
tion device.
MD-1B2SPFCC Single-pole trip, 5 amp ct, 250
Vdc, with OSB, Pilot system, FT-
switch and INCOM communica-
tion device.
MD-3B2SPFCC 3-pole trip, 5 amp ct, 250 Vdc,
with OSB, Pilot system, FT-
switch and INCOM communica-
tion device.
MD-3A2SPFCC 3-pole trip, 1 amp ct, 250 Vdc,
with OSB, Pilot system, FT-
switch and INCOM communica-
tion device.
MD-1B2SPFRC Single-pole trip, 5 amp ct, 250
Vdc, with OSB, Pilot system, FT-
switch and RS-232 communica-
tion device.
System drawing for this application is 2690F96.