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20 HP, 1800 RPM, NEMA Frame 256TC, 460 V, TEFC
    The X$D Ultra® family of products range from 1-300 HP and is built to the highest standards to maximize your return on investment. X$D Ultra is a complete cast iron motor exceeding NEMA Premium® Efficiency standards. The Six Star Bearing System™ ensures long bearing life and is complemented by an overall vibration of 0.04 ips (inches per second), which is half of IEEE-841 standards. The X$D Ultra also, incorporates GEGARD2000™ insulation system which has the ability to withstand repeated 0.1 microsecond rise time/2000 volt spikes for 460 and 575 line voltages. All motors are inverter compatible and have the speed range capabilities stamped on the nameplate.

    Industries: Oil & Gas, Power & Energy, Water/Wastewater, Cement, Pulp and Paper, Metals, Mining, Chemical

    Applications
    • Pumps
    • Fans
    • Blowers
    • Compressors
Unit of Measure

Enclosure Type

 N/A Totally Enclosed Fan Cooled

HP

 N/A 20

RPM

 N/A 1800

Voltage

 N/A 460 V

FLA

 N/A 23.3

Nom. Eff.

 N/A 93.0

Guar. Min. Eff.

 N/A 92.4

Frame

 N/A 256TC

Price Symbol

 N/A G4-7U1

C Dimension

 N/A 26.09 in

Weight

 N/A 350 lbs

Norm. Stk.

 N/A Yes

Certification

 N/A
EIS Act 2007 Compliant

GEGARD 2000™

NEMA Premium

Features & Benefits

 N/A
  • GEGARD2000™ Insulation System
    Integral to motor life and reliability is a robust insulation system. The GEGARD2000™ system utilized in Ultra™ gives a wide thermal margin between the insulation components and designed operation temperatures. All components except motor leads have been selected using Class H materials, while the motor temperature is kept below Class B temperature rise.
  • Six Star Bearing System™
    Another key component in motor operation and longevity is the bearing system. The GE Six Star Bearing System™ has been designed to significantly reduce the potential for bearing failure. Vibration has been reduced to an industry leading .04 ips (inches per second), reducing a leading cause of bearing failure. Regreasing consideration has been made easy with extended greasing provisions, which allows motor users improved ability to regrease these motors when they are installed in the application.
  • Meets or Exceeds New NEMA Premium Standards
    Energy consumption by electric motors can be a significant portion of a large Industrial Manufacturer’s operating budget. As a result NEMA has created a new NEMA Premium Standard for Efficiency, giving users some guidelines to use for selecting motors for Efficiency and best payback for power consumption. The Ultra™ line of motors meets or in several cases exceeds this standard.
  • Best in Class Drive Compatibility
    Electric motors are being used in increasing percentages on variable frequency drives. As a result, we have added several elements to our motor design to allow customers to apply the Ultra™ motor in their applications with greater flexibility. The insulation system has been designed to exceed the NEMA standard MG1-31 regarding Inverter Duty Motor Insulation. Further, the Ultra™ motor has a special designed shaft on the opposite drive end (ODE) to allow for field installation of a tachometer to provide process feedback to the drive.
  • A Product of ecomagination
    For a product to have the ecomagination mark it must meet two criteria
    1. Measurably improve the customers environmental performance and
    2. Significantly and measurably improve the customers operating performance.
    The X$D Ultra® motor achieves both. It meets or exceeds NEMA Nominal Premium Efficiency Standards and exceeds the minimum guarantee. Therefore improved energy consumption and usage are dramatically realized. The X$D Ultra’s low temperature rise and low vibration is perfect for harsh environments in a variety of industries (Oil & Gas, Energy, Pulp & Paper, Chemical, etc.). It is the ultimate ultra motor for any application where the operating conditions are less than perfect and uptime is a very high priority.
  • Safety is an Important Feature
    The entire X$D Ultra product range incorporates a 4 point cast in lifting lug system. These lugs are an integral part of the frame of the X$D Ultra motor allowing for safer lifting during installation and maintenance. This is a convenient and safe feature when mounting the motor in vertical or horizontal positions.

Manufacturer

 N/A
GE

Poles

 N/A 2 4 6 8

Efficiency

 N/A Meets or Exceeds NEMA Premium nominal. Exceeds all NEMA Premium minimum efficiencies.

Frequency

 N/A 60 Hz

NEMA Design

 N/A B

Agency Approvals

 N/A C-390 CSA - Motors UL - Component and Insulation System Recognition

Altitude

 N/A 3300 ft
Ambient Temperature1 N/A 40 ºC

Balance/Vibration

 N/A 2P: 0.0003 in (P-P) 4P: 0.0004 in (P-P) 6P: 0.0005 in (P-P) 8P: 0.0007 in (P-P)

Bearing Caps

 N/A Both ends are gasketed

Bearing Housing Rise

 N/A 65 ºC

Bearing Protection

 N/A Recessed Slinger, Inpro Seal kit available

Bearing Type

 N/A Ball, Belted 4-pole

Centered Core

 N/A Allows F1-F2 field conversion

Conduit Box

 N/A Gasketed and rotatable, Cast iron

Div. 2 Temp Codes

 N/A An optional Division 2 Nameplate or a statement of maximum internal and external surface temperature can be provided.

Drains

 N/A Stainless Steel T-drains in lowest section of both endshields

End Shield

 N/A Cast Iron

Fan

 N/A Bronze Non-Sparking Plastic

Fan Cover

 N/A Cast Iron

Fasteners

 N/A SAE, Grade 5

Foot Draft Angle

 N/A ±1.5 º

Foot Flatness

 N/A 0.005 in

Frame Material

 N/A Cast Iron

Grease

 N/A Polyurea

Ground

 N/A Ground lug in Conduit Box

Industry Specifications

 N/A Meets IEEE 45 Marine Duty

Insulation Class

 N/A Class F with H materials

Insulation System

 N/A GEGARD2000™. Non-Hygroscopic, Anti-Fungus, 2400 Volt or 2000 Volt @ 0.1 microsecond rise time. Exceeds NEMA MG1-31

Inverter Capabilities

 N/A Variable Torque inf:1, Constant Torque 20:1

L10 Bearing Life

 N/A Direct Coupled: 130000 hrs, Belted: 26280 hrs, Belted L10a: 50000

Lifting Means

 N/A 4 Lugs cast into frame

Mounting

 N/A F1 as Standard and Modifiable to F2

Mounting Holes

 N/A 2 per foot

Nameplate

 N/A Stainless Steel includes Weight, 3/4 Load Efficiency, Vibration Limit, Alternate Ambient and Service Factor

Paint

 N/A Buff, Epoxyester

Relubrication

 N/A Both ends, extended through the fan cover

Rotor

 N/A Cast Aluminum
Service Factor2 N/A 1.15

Shaft TIR

 N/A Meets IEEE 841, 0.001 in for shaft diameter 1.625 in and smaller, 0.0015 in for shaft diameter greater than 1.625 in.

Tach Mounting

 N/A Tach kits for field modifications are available
Temperature Rise3 N/A 80 ºC

Tests

 N/A NEMA Routine Report including Vibration supplied with motor, IEEE 112

Time Rating

 N/A Continuous

Vibration Pads

 N/A Cast in vibration pads for repeatable measurements

Warranty

 N/A 36 months from date of purchase, 42 months from date of shipment, whichever occurs first
  • 1 Alternate rating 65ۜC @ 1.0 SF
  • 2 1.15, Alternate rating 65°C @ 1.0 SF
    1.25 for 320 frames & larger @ 40°C; all other frames 1.15
  • 3 At 1.0 SF