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NEMA Motors JMC0204DP

20.00 HP, 1800 RPM, 3 Phase, 230/460V, 256JM Rigid/C-Flange, TEFC

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Quick Specs

  • HP 20.00
  • RPM 1800
  • PHASE 3
  • VOLTAGE 230/460V
  • MOUNTING Rigid/C-Flange
  • ENCLOSURE TEFC

Product Overview

Three phase, enhanced performance closecoupled pump motors. Cast aluminum 215JM/ JP and below, cast iron 254JM/JP and above, NEMA Premium Efficient.

Features a multi-mount arrangement incorporating bolt on feet and flange mount configuration. 2 ,4 and 6 pole, 1 to 75HP.


Motor Features

STANDARD FEATURES
  • Removable feet F1, F2, F0 field convertible up to and including 326T frame, F2 convertible 364T and larger
  • 1.25 Service Factor with 60Hz operation / 1.0 Service Factor with 50Hz operation
  • 36 Month warranty
  • Conduit Box is 90º rotatable
  • CSA Certified for Class I, Division II, Groups A, B, C and D / Class I, Zone 2, Groups IIC, IIB, IIA
  • IEEE 45 Marine Duty 254JM/JP frame and larger
  • Anti-microbial (tropicalization) on stator winding
  • Cast iron fan covers on 254JM/JP frame and larger
  • Regreasable bearings 254JM/JP frame and larger
  • Mobil Polyrex EM polyurea grease
  • AISI 304 grade stainless steel shaft
  • Surface finish:
    • Alkyd enamel RAL7024 - Graphite Gray
    • Black oxide surface treatment for increased corrosion resistance (aluminum models only)
  • Stainless steel nameplate
  • Corrosion resistant hardware
  • Ultra high strength, reusable lifting straps included with motors 254JM/JP frame and larger
OPERATING PARAMETERS
  • Continuous (S1) duty
  • Ambient temperatures up to 40ºC
  • Installation up to 1000 MASL (3300 ft.)

CONNECTION
  • Up to and including 215JM/JP Frame:
  • 9-Lead 230V parallel-wye / 460V series-wye connection
  • 3-Lead 575V wye connection
  • 254JM/JP Frame and larger:
  • 12-Lead 230V parallel-delta / 460V delta connection
  • 6-Lead 575V single voltage delta connection

INGRESS PROTECTION

The standard degree of enclosure protection is IP55 (increased IP protection is available). Both drive end and non-drive end are fitted with double lip oil seals, including a rubber shaft slinger on the drive end. Terminal box is double gasketed including nipple seals between conduit box and stator body. DE and NDE end bell fitted with sintered brass one-way drain.


INSULATION AND INVERTER RATING
  • Class F Insulation
  • Designed to Class B temperature rise
  • Vacuum Impregnated
  • Inverter Rated 15:1 Constant Torque, 1000:1 Variable Torque (1.0 S.F. on VFD Power)
  • Exceeds NEMA MG 1 Part 31.4.4.2


Specifications

Download Specifications
ELECTRICAL DATA
Rated Motor Output Power
20
HP
-
kW
Rated Motor Speed
1770
r/min 60Hz
1460
r/min 50Hz
Rated Motor Voltage (+/-10%)
230/460
V/60Hz
190/380
V/50Hz
Rated Motor Current
46.8/23.4
A (In) @ 60Hz
55.8/27.9
A (In) @ 50Hz
Phase
3
Ø
Locked Rotor Current @ High Voltage
211.8934
A (In) @ 60Hz
Fl Current @ 208V
51.7801686978
A (In) @ 60Hz
Service Factor
1.25
@ 60Hz
1
@ 50Hz
KVA Code
K
60Hz
H
50Hz
Nominal Efficiency
93
% @ 60Hz
Nominal Power Factor
0.86
cosφ @ 60Hz
Leads (Qty, Size)
12
Connection
DD/D
Coil Resistance
0.36
Ω
Start Capacitor
-
μF/V
Run Capacitor
-
μF/V
VFD DUTY (S.F. 1.0)
RATIO
Hz
Variable Torque
1000:1
2 - 60
Constant Torque
15:1
4 - 60
FULL LOAD TEMPERATURE RISE
Full Load Temperature Rise
50.6
ºC @ 60Hz
69.1
ºC @ 50Hz
GENERAL DATA
Frame Size
256JM
Enclosure
TEFC
Mounting
Rigid/C-Flange
Approximate Weight (lbs.)
347.7 lbs.
Casing Material / Fan Cover
Cast Iron
Cast Iron
Shaft Material
304 SS
NEMA Design
A
Degree of Protection (IP)
55
Insulation Class / Temp Rise (60Hz)
F
B
Tropicalization
YES
Duty
Cont. / S1
Conduit Box Location
1-NPT 1-1/4"
Feet Removable / Double Drilled
YES
YES
Paintwork
7024
Graphite Gray
MECHANICAL DATA
Bearing DE Side
6309C3
Bearing ODE Side
6309C3
Grease Type
Mobil Polyrex EM
Compensation Ring (wavy washer)
NDE
Moment of Inertia (lb-ft2)
-
Sound Pressure @ 3 FT dBA
75.6
SITE CONDITIONS
Ambient Temperature (℃)
40
Meters Above Sea Level (MASL)
1000
HAZARDOUS LOCATIONS
CSA Certified
CSA Certified
Temperature Code
-
-

Nameplate

Download Nameplate
NAMEPLATE DATA
60Hz
50Hz
Horse Power
20
20
RPM
1770
1460
Voltage
230/460
190/380
Full Load Amps
46.8/23.4
55.8/27.9
Service Factor
1.25
1
KVA Code
K
H
Full Load Amps (208V)
51.7801686978
-
Nominal Efficiency
93
91.5
Nominal Power Factor
0.86
-
Design
A
Frame
256JM
Enclosure Type
TEFC
IP Rating
55
Duty
Cont. / S1
Insulation Class
F
Ambient Rating
40
Drive End Bearing
6309C3
Opposite Drive End Bearing
6309C3
Weight (lbs)
347.7
NAMEPLATE LAYOUT

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VFD DUTY (S.F. 1.0)
RATIO
Hz*
Variable Torque
1000:1
2 - 60
Constant Torque
15:1
4 - 60
*For max speed please contact Techtop Canada
HAZARDOUS LOCATIONS
CSA CERTIFIED
Class / Division
I
II
Groups
A, B, C and D

Performance

Download Performance Data
PERFORMANCE LOAD VALUES, HIGH VOLTAGE, 60Hz
TYPICAL PERFORMANCE - NOT GUARANTEED VALUES
TORQUE VALUES
TORQUE (lb-ft)
TORQUE (% FULL LOAD)
PERFORMANCE VALUES
Locked Rotor Torque
166.907364132
280
Start Configuration
DOL
Pull-Up Torque
122.796132183
206
Starting Current (A)
211.2
Breakdown Torque
209.826400624
352
No-Load Current (A)
8.724
Full Load Torque
59.609772904
100
No-Load Power Factor
0.07


% OF RATED LOAD
25
50
75
100
125
S.F.
Line Amperes (A)
10.246
13.842
18.278
23.351
28.858
28.858
Efficiency (%)
-
91.953
92.768
92.581
91.952
91.952
Speed (r/min)
1793.3
1786.6
1779.4
1771.7
1763.5
1763.5
Power Factor (cosφ)
0.523
0.739
0.832
0.87
0.886
0.886
Input Power(kW)
4.277
8.156
12.127
16.202
20.391
20.391

Drawings & Wiring

3D CAD DRAWING 2D CAD DRAWING
Download PDF Drawing
DRAWING NUMBER
DIMENSIONS
MOUNTING
CASING MATERIAL
GR3-CI-TF-256JM-CFC
Inches
Rigid/C-Flange
Cast Iron





Download Wiring Diagram
DRAWING NUMBER
CONNECTION
NUMBER OF LEADS
THERMAL PROTECTION
NEMA-3-12-DD-D
DD/D
12
Optional

Parts & Accessories

COMPONENTS
Component
Part #
Description
Price
Stock
Qty
Cooling Fan
PRF-CI-IE2-160-2
TECHTOP CAST IRON MOTOR PLASTIC REPLACEMENT FAN (NEMA 250T / IEC 160) 2, 4, 6 PO
--
Conduit Box Kit
CB250
TECHTOP CAST IRON NEMA CONDUIT BOX 250T FRAME
--
Feet Kit
CRF256-DBL
TECHTOP CAST IRON NEMA FEET DOUBLE DRILLED 256T FRAME (PAIR)
--
Steel Fan Cover
SFC250
TECHTOP STEEL FAN COVER FOR CAST IRON MOTORS (NEMA 250T / IEC 160)
--
Cast Iron Fan Cover
CFC250
TECHTOP CAST IRON FAN COVER FOR CAST IRON MOTORS (NEMA 250T / IEC 160)
--
ODE Plate
CEP250
TECHTOP CAST IRON END PLATE FOR CAST IRON MOTORS (NEMA 250T / IEC 160)
--
DE Oil Seal
45*65*8
--
--
ODE Oil Seal
45*65*8
--
--
Shaft Slinger
43*96*6
--
--
9-Post Terminal Board
TB160-180-9
TECHTOP CAST IRON IEC PLASTIC 9 POST TERMINAL BOARD 160/180 FRAME (W/ HARDWARE)
--
Brass Drain
M5DRAIN
M5 THREADED BRASS SINTERED DRAIN
--
Brass Drain Plastic Plug
M5PLUG
M5 THREADED PLASTIC DRAIN PLUG
--
DE Bearing Retainer
CBRO6309
TECHTOP CAST IRON BEARING RETAINER OUTER NO WAVY WASHER END (250T / 160)
--
ODE Bearing Retainer
CBRO6309-WW
TECHTOP CAST IRON BEARING RETAINER OUTER WAVY WASHER END (250T / 160)
--
Wavy Washer
WW6309
WAVY (SPRING) WASHER FOR BEARING SIZE 6309
--


ACCESSORIES
Accessory
Part #
Description
Price
Stock
Qty
JM/JP C-Flange Kit
CFK-250JM/JP
TECHTOP CAST IRON NEMA JM/JP REPLACEMENT FLANGE KIT 250 FRAME
--
Steel Drip Cover
SDC250
TECHTOP STEEL DRIP COVER FOR STEEL FAN COVER ONLY (NEMA 250T / IEC 160)
--
Cast Iron Drip Cover
CDC250
TECHTOP CAST IRON DRIP COVER FOR CAST IRON FAN COVER ONLY (NEMA 250T / IEC 160)
--
Slide Base
B256T
256T DOUBLE ADJ. MOTOR SLIDE BASE
--
Conversion Base
CB2825T
CB2825T U-FRAME/T-FRAME MOTOR CONVERSION BASE
--