Fact Sheet

Powerful Features
Superior Electrical
Performance
The X$D Ultra
®
661 meets or exceeds
NEMA Premium
®
Nominal efficiencies
and exceeds all NEMA Premium
®
minimum guaranteed efficiencies
1 GEGARD2400™ insulation systems
feature Class H insulation materials
and 1.15 service factor. This system
increases motor protection against
IGBT drive voltage spikes up to
2,400 volts @ 0.1 microsecond rise
time, which exceeds NEMA MG1-31
standards. It is also capable of an
Infinite:1 variable torque speed range.
2 Meets NEMA design B torque and
current requirements.
3 A five-year warranty comes standard
with every X$D Ultra
®
661 motor.
(60 months operational/66 months
maximum from shipment).
Bearings
GE’s bearing system assures the
maximum possible bearing life when
combined with a maintenance program.
4 Overall displacement is 0.0004 inches
peak-to-peak. Rotor assembly balanced
to ISO 1940 Grade 1.0. This helps to
extend the life of the motor and the
connected equipment.
5 A non-contact labryinth seal is
integrated to both the drive-end and
opposite drive-end ensuring IP55
protection of the bearing system.
6 Fully charged lubrication system with
a temperature-resistant polyurea
grease suitable for a wide temperature
range (-40°C to +130°C).
7 An oversized roller bearing has
been designed to yield 40,000 hours
minimum L10 bearing life for belted
loads.
8 A cast-iron gasketed bearing inner
cap is secured by a bolt with a
copper washer to ensure a totally
enclosed system. This helps to retain
lubricant and protects the bearing
system and interior of the motor from
contaminants.
9 Low temperature rise designs (15%
cooler on average than IEEE 841-2009
specification).
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Proven Reliability
For years severe duty motors from GE
have proven their performance and
reliability in the most demanding process
industry environments.
10 Cast-in vibration pads provide
mounting locations for a minimum of
three axial and three radial probes.
11 Rugged cast iron frame, conduit box,
endshields and fan cover.
12 RTV sealed frame-to-endshield rabbet
fit.
13 Stainless steel T-drain at the lowest
point in bottom endshield and brass
plug on upper endshield helps to
relieve and prevent condensation.
Safety
GE has added features which make
this product safe to install, operate and
maintain.
14 Safer lifting is possible with a four-
point, cast-in lifting system versus a
single eyebolt.
15 A silicon bronze box lug ground
terminal is located in the conduit box.
An additional ground terminal post
is located on the drive-end endshield
for greater operational safety.
16 Maximum surface temperature of
200°C stamped on auxiliary nameplate.
Qualified for Division 2 applications.
Optional CSA certification for Division 2
applications is also available.