Datasheet E505 Datasheet (Marathon Electric)

PRODUCT INFORMATION PACKET

Model No: 256TTGN16509

Catalog No: E505

20 HP Explosion Proof Motor, 3 phase, 3600 RPM, 230/460 V, 256T Frame, EPFC

Explosion Proof NEMA Motors

Regal and Marathon are trademarks of Regal Beloit Corporation or one of its affiliated companies.

©2020 Regal Beloit Corporation, All Rights Reserved. MC017097E

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Product Information Packet: Model No: 256TTGN16509, Catalog No:E505 20 HP Explosion Proof Motor, 3 phase, 3600 RPM, 230/460 V, 256T Frame,
EPFC

Nameplate Specifications

Output HP 20 Hp Output KW 14.9 kW
Frequency 60 Hz Voltage 230/460 V
Current 47.0/23.4 A Speed 3537 rpm
Service Factor 1.15 Phase 3
Efficiency 92.4 % Power Factor 86
Duty Continuous Insulation Class F
Design Code B KVA Code G
Frame 256T Enclosure Explosion Proof Fan cooled
Thermal Protection Thermostats (N/C) Ambient Temperature 40 °C
Drive End Bearing Size 6309 Opp Drive End Bearing Size 6210
UL UL Listed And CSA Certified CSA Y
CE N IP Code 54

Hazardous Location

EXP PROOF CL I GR C&D CL II GR
F&G T3B

Technical Specifications

Electrical Type Squirrel Cage Inverter Rated Starting Method Line Or Inverter
Poles 2 Rotation Reversible
Resistance Main .394 Ohms Mounting Rigid base
Motor Orientation Horizontal Drive End Bearing Ball
Opp Drive End Bearing Ball Frame Material Cast Iron
Shaft Type T Overall Length 25.27 in
Frame Length 12.25 in Shaft Diameter 1.625 in
Shaft Extension 4.18 in Assembly/Box Mounting F1 ONLY
Outline Drawing B-SS203001-1225 Connection Drawing A-EE7308AD

This is an uncontrolled document once printed or downloaded and is subject to change without notice. Date Created:10/06/2020

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Regal Beloit America, Inc.

TM

COPYRIGHT REGAL BELOIT AMERICA, INC. ALL RIGHTS RESERVED.

PROPRIETARY AND CONFIDENTIAL INFORMATION - THIS DOCUMENT IS THE PROPERTY OF

REGAL BELOIT AMERICA, INC. ("OWNER") AND CONTAINS OWNER'S PROPRIETARY

INFORMATION. ANY PERSON, CORPORATION OR OTHER FIRM RECEIVING I T IS DEEMED,
BY RECEIVING IT, TO AGREE THAT IT, AND/OR ANY PART OF IT, SHALL NOT BE DISCLOSED
TO ANY PERSON, CORPORATION OR OTHER ENTITY, DUPLICATED, A ND/ OR USED, EXCEPT

AS EXPRESSLY APPROVED IN WRITING IN ADVANCE BY OWNER. THIS DOCUMENT SHALL

BE RETURNED TO OWNER UPON REQUEST. IT MAY BE SUBJECT TO CERTAIN

RESTRICTIONS UNDER APPLICABLE EXPORT CONTROL LAWS AND REGULATIONS.

TOLERANCES UNLESS
OTHERWISE SPECIFIED:
DEC.

INCH mm ANGLE
.X 0.1 [ 2.5] 7' 30"
.XX 0.03 [ 0.76]
XXX 0.005 [ 0.127]
.XXXX 0.0005 [ 0.0127]
REMOVE BURRS & BREAK SHARP
EDGES: .003/.015 [.076/.381]
CORNER FILLETS: .02 [.51]
MACHINED SURFACES:

200 5.1

INCH mm
mm SHOWN IN [BRACKETS]

12

43

A

B

2

43

1

A

B

ECO DESCRIPTION

DATEAPPROVED BY

DATEREVISION BY

ECO

DRAWING REVISION

REFERENCE

MATERIAL

SHEET

DRAWING NUMBERSIZE

DESCRIPTION

THIRD ANGLE
PROJECTION

DRAWN BY

DATE

DATE

APPROVED BY

PROCESS/FINISH

B

1 OF 1

SS203001

RM

12-14-1993

FG

12-15-1993

F SD 11/18/2019

ECO-0177002 VMR 11/18/2019

OULTLINE DESCRIPTION AND C DIMENSION UPDATED

OUTLINE

250T FR. EXP. PR. - BB - T - STD.

NOTES:

1. CONDUIT BOX CAN ONLY BE ROTATED CLOCKWISE UP
TO 270 FROM ITS ORIGINAL POSITION.

2. NAMEPLATES TO BE READ FROM CONDUIT BOX SIDE
OF MOTOR.

DASH FRAME B C 2F 2FF BS

1050 254T

10.25

[260.35]

23.65

[600.71]

---

8.25

[209.55]

4.12

[104.65]

1225 256T

12.00

[304.80]

25.40

[645.16]

---

10.00

[254.00]

5.00

[127.00]

B

2F

1.625

1.624

41.275

41.250

4.20

106.71

C

BS

7.13

180.975

4.25

107.84

4.00

101.60
.375 x .375 x 2.88
[9.525 x 9.525 x 73.15]
KEY

12.16

308.86

10.00

254.00

14.38

365.26

2.11

53.56

.55

13.97

14.06

357.12

20.30

515.63

5.00

127.00

6.25

6.19

158.75

157.23

3.12

79.25

10.15

257.71

13.14

333.86

.53-.58

4 HOLES

1-1/4" NPT

LEAD HOLE

3/8-16UNC-2B
THRU-1 HOLE

F2 VIEW

Regal Beloit America, Inc.

TM

COPYRIGHT REGAL BELOIT AMERICA, INC. ALL RIGHTS RESERVED.

PROPRIETARY AND CONFIDENTIAL INFORMATION - THIS DOCUMENT IS THE PROPERTY OF

REGAL BELOIT AMERICA, INC. ("OWNER") AND CONTAINS OWNER'S PROPRIETARY

INFORMATION. ANY PERSON, CORPORATION OR OTHER FIRM RECEIVING I T IS DEEMED,
BY RECEIVING IT, TO AGREE THAT IT, AND/OR ANY PART OF IT, SHALL NOT BE DISCLOSED
TO ANY PERSON, CORPORATION OR OTHER ENTITY, DUPLICATED, A ND/ OR USED, EXCEPT

AS EXPRESSLY APPROVED IN WRITING IN ADVANCE BY OWNER. THIS DOCUMENT SHALL

BE RETURNED TO OWNER UPON REQUEST. IT MAY BE SUBJECT TO CERTAIN

RESTRICTIONS UNDER APPLICABLE EXPORT CONTROL LAWS AND REGULATIONS.

TOLERANCES UNLESS
OTHERWISE SPECIFIED:
DEC.

INCH mm ANGLE
.X 0.1 [ 2.5] 7' 30"
.XX 0.03 [ 0.76]
XXX 0.005 [ 0.127]
.XXXX 0.0005 [ 0.0127]
REMOVE BURRS & BREAK SHARP
EDGES: .003/.015 [.076/.381]
CORNER FILLETS: .02 [.51]
MACHINED SURFACES:

200 5.1

INCH mm
mm SHOWN IN [BRACKETS]

12

43

A

B

2

43

1

A

B

ECO DESCRIPTION

DATEAPPROVED BY

DATEREVISION BY

ECO

DRAWING REVISION

REFERENCE

MATERIAL

SHEET

DRAWING NUMBERSIZE

DESCRIPTION

THIRD ANGLE
PROJECTION

DRAWN BY

DATE

DATE

APPROVED BY

PROCESS/FINISH

B

1 OF 1

SS203001

RM

12-14-1993

FG

12-15-1993

F SD 11/18/2019

ECO-0177002 VMR 11/18/2019

OULTLINE DESCRIPTION AND C DIMENSION UPDATED

OUTLINE

250T FR. EXP. PR. - BB - T - STD.

NOTES:

1. CONDUIT BOX CAN ONLY BE ROTATED CLOCKWISE UP
TO 270 FROM ITS ORIGINAL POSITION.

2. NAMEPLATES TO BE READ FROM CONDUIT BOX SIDE
OF MOTOR.

DASH FRAME B C 2F 2FF BS

1050 254T

10.25

[260.35]

23.65

[600.71]

---

8.25

[209.55]

4.12

[104.65]

1225 256T

12.00

[304.80]

25.40

[645.16]

---

10.00

[254.00]

5.00

[127.00]

Uncontrolled Copy

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LOW VOLTAGE

LOW VOLTAGE

T1

T1

T6

T6
T7

T7

T2

T2

T4

T4

T8

T8

T3

T3
T5

T5

T9

T9

HIGH VOLTAGE

HIGH VOLTAGE

T1

T1
T4

T4

T7

T7
T2

T2
T5

T5
T8

T8
T3

T3
T6

T6

L1

L1

L2

L2

L3

L3

L1

L1

L2

L2

L3

L3

Uncontrolled Copy

LOW VOLTAGE

LOW VOLTAGE

L1 T1 T6 T7 L2 T2 T4 T8 L3 T3 T5 T9

L1 T1 T6 T7 L2 T2 T4 T8 L3 T3 T5 T9

.

.

T

T

O

O

R

R

P

P

HIGH VOLTAGE

HIGH VOLTAGE

T4 T7 T5 T8 T6 T9

T4 T7 T5 T8 T6 T9

P1

P1

P2

P2

L1 T1 L2 T2 L3 T3

L1 T1 L2 T2 L3 T3

P

P

R

R

O

O

T.

T2

T2

T.

.

.

T

T

O

O

R

R

P

P

T3

T3

T6

T6

T9

T9

T1

T1

T8

T8

T5

T5

T4

T4

T7

T7

P1

P1

P2

P2

P1

P1

P2

P2

T6

T6
T9

T9
T1

T1
T4

T4
T7

T7
T2

T2

T5

T5

T8

T8

T3

T3

T9

T9

P1

PROT.

PROT.

PROT.

PROT.

PROT.

PROT.

WHEN MORE THAN ONE PROT. IS USED; PROT. ARE CONNECTED IN SERIES

WHEN MORE THAN ONE PROT. IS USED; PROT. ARE CONNECTED IN SERIES

REVISION BY REV DATE/

DRAWING REVISION

DRAWING REVISION

ECO

ECO

ECO DESCRIPTION

ECO DESCRIPTION

L

L

ECO-0168744

ECO-0168744

UPDATED TO CURRENT STANDARDS

UPDATED TO CURRENT STANDARDS

COPYRIGHT (PER REVISION DATE) REGAL BELOIT AMERICA, INC. ALL RIGHTS RESERVED.

COPYRIGHT (PER REVISION DATE) REGAL BELOIT AMERICA, INC. ALL RIGHTS RESERVED.

PROPRIETARY AND CONFIDE NTIAL INFORMATION - THI S DOCUMENT IS THE PROPERTY OF

PROPRIETARY AND CONFIDE NTIAL INFORMATION - THI S DOCUMENT IS THE PROPERTY OF

REGAL BELOIT AMERICA, INC. ("OWNER") AND CONTAINS OWNER'S PROPRIETARY

REGAL BELOIT AMERICA, INC. ("OWNER") AND CONTAINS OWNER'S PROPRIETARY

INFORMATION. ANY PERSON, CORPORATION OR OTHER FIRM RECE IVING IT IS DEEMED,

INFORMATION. ANY PERSON, CORPORATION OR OTHER FIRM RECE IVING IT IS DEEMED,

BY RECEIVING IT, TO AGREE THAT IT, AND/OR ANY PART OF IT, SHALL NOT BE DISCLOSED

BY RECEIVING IT, TO AGREE THAT IT, AND/OR ANY PART OF IT, SHALL NOT BE DISCLOSED
TO ANY PERSON, CORPORATI ON OR OTHER ENTITY, DUPLICATED, AND/OR USED, EXCEPT

TO ANY PERSON, CORPORATI ON OR OTHER ENTITY, DUPLICATED, AND/OR USED, EXCEPT

AS EXPRESSLY APPROVED IN WRITING IN ADVANCE BY OWNER. THIS DOCUMENT SHALL

AS EXPRESSLY APPROVED IN WRITING IN ADVANCE BY OWNER. THIS DOCUMENT SHALL

BE RETURNED TO OWNER UPON REQUEST. IT MAY BE SUBJECT TO CERTAIN

BE RETURNED TO OWNER UPON REQUEST. IT MAY BE SUBJECT TO CERTAIN

RESTRICTIONS UNDER APPLICABLE EXPORT CONTROL LAWS AND REGULATIONS.

RESTRICTIONS UNDER APPLICABLE EXPORT CONTROL LAWS AND REGULATIONS.

REVISION BY REV DATE/

APPROVED BY DATE

APPROVED BY DATE

JP

JP

MH

MH

P1

P2

P2

06-21-2019

06-21-2019

06-21-2019

06-21-2019

© DATE

© DATE

TOLERANCES (EXCEPT AS NOTED):

TOLERANCES (EXCEPT AS NOTED):

INCH mm ANGLE

INCH mm ANGLE

DEC.

DEC.
.X 0.1 [ 3] 7' 30"

.X 0.1 [ 3] 7' 30"
.XX 0.02 [ 0.5]

.XX 0.02 [ 0.5]
.XXX 0.005 [ 0.13]

.XXX 0.005 [ 0.13]
.XXXX 0.0005 [ 0.013]

.XXXX 0.0005 [ 0.013]
REMOVE BURRS & BREAK SHARP

REMOVE BURRS & BREAK SHARP
EDGES: .003/.015 [.08/.38] X 45

EDGES: .003/.015 [.08/.38] X 45
CORNER FILLETS: R.02 [.5]

CORNER FILLETS: R.02 [.5]
MACHINED SURFACES:

MACHINED SURFACES:
INCH mm

INCH mm
mm DIMENSIONS IN [BRACKETS]

mm DIMENSIONS IN [BRACKETS]
ARE FOR REFERENCE ONLY

ARE FOR REFERENCE ONLY

200

200

5.1

5.1

VIEW OF TERMINAL END

VIEW OF TERMINAL END

DRAWN BY

DRAWN BY

DATE

DATE

APPROVED BY

APPROVED BY

DATE

DATE

REFERENCE

REFERENCE

THIRD ANGLE

THIRD ANGLE
PROJECTION

PROJECTION

MJD

MJD

12-19-1997

12-19-1997

GK

GK

01-07-1998

01-07-1998

DESCRIPTION

DESCRIPTION

MATERIAL

MATERIAL

SIZE DRAWING NUMBER

SIZE DRAWING NUMBER

A

A

®

®

Regal Beloit America, Inc.

Regal Beloit America, Inc.

CONN DIAGRAM-EXTERNAL

CONN DIAGRAM-EXTERNAL

PROCESS/FINISH

PROCESS/FINISH

EE7308AD

EE7308AD

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SHEET

SHEET

1 OF 1

1 OF 1

CERTIFICATION DATA SHEET

Model#: 256TTGN16509 AA WINDING#: K256288 NONE 6
CONN. DIAGRAM: A-EE7308AD ASSEMBLY: F1 ONLY
OUTLINE: B-SS203001-1225

TYPICAL MOTOR PERFORMANCE DATA

HP KW SYNC. RPM F.L. RPM FRAME ENCLOSURE KVA CODE DESIGN

20&15 14.9&11.2 3600 3537&2955 256T EPFC G B

PH Hz VOLTS FL AMPS START TYPE DUTY INSL S.F AMB°C ELEVATION

3 60/50 230/460#190/

380

47/23.4&42/21 LINE OR

INVERTER

CONTINUOUSF3 1.15/1.15 40 3300

FULL LOAD EFF:

92.4&92.4

3/4 LOAD EFF: 91.7 1/2 LOAD EFF: 91 GTD. EFF ELEC. TYPE NO LOAD AMPS

FULL LOAD PF:

86&86.5

3/4 LOAD PF: 85 1/2 LOAD PF: 78 91.7 SQ CAGE INV RATED 14 / 7

F.L. TORQUE LOCKED ROTOR AMPS L.R. TORQUE B.D. TORQUE F.L. RISE°C

29.7 LB-FT 290 / 145 55 LB-FT 185 84 LB-FT 283 55

SOUND PRESSURE

@ 3 FT.

SOUND POWER ROTOR WK^2 MAX. WK^2 SAFE STALL TIME STARTS

/HOUR

APPROX. MOTOR

WGT

72 dBA 82 dBA 1.3 LB-FT^2 26 LB-FT^2 20 SEC. 2 370 LBS.

*** SUPPLEMENTAL INFORMATION ***

DE BRACKET

TYPE

ODE BRACKET

TYPE

MOUNT

TYPE

ORIENTATION SEVERE

DUTY

HAZARDOUS

LOCATION

DRIP

COVER

SCREENS PAINT

STANDARD STANDARD RIGID HORIZONTAL PREMIUM

SEVERE DUTY

EXP PROOF CL

I GR C&D CL II

GR F&G T3B

FALSE NONE BLUE (EPOXY)

BEARINGS GREASE SHAFT TYPE SPECIAL DE SPECIAL ODE SHAFT

MATERIAL

FRAME

MATERIAL

DE OPE

BALL BALL POLYREX EM T NONE NONE 1045 HOT

ROLLED (C-204)

CAST IRON

6309 6210

THERMO-PROTECTORS THERMISTORS CONTROL SPACE /n HEATERS

THERMOSTATS PROTECTORS WDG RTDs BRG RTDs

TSTATS (N/C) NOT NONE NONE NONE FALSE NONE VOLTS

If Inverter equals NONE, contact factory for further

information

*
N
O
T
E
S
*

INVERTER TORQUE: CONSTANT 10:1
INV. HP SPEED RANGE: NONE

ENCODER: NONE
NONE NONE
NONE NONE PPR

BRAKE: NONE NONE
NONE P/N NONE
NONE NONE

- FT-LB NONE V NONE Hz

DATE: 06/23/2017 07:20:15 AM
FORM 3531 REV.3 02/07/99

Uncontrolled Copy

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** Subject to change without notice.

Uncontrolled Copy

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Date:

Customer:

Attention:

Submitted by:

v

Speed (RPM)

Current (Amps)

P

E

10.0

20.0

30.0

0.0

0 500 1000 1500 20 00 2500 3000 3500 4000

40.0

TORQU

50.0

60.0

70.0

80.0

90.0

30.0

40.0

50.0

0% 20% 40% 60% 80% 100% 120% 140%

F

60.0

70.0

EFF

80.0

100.0

90.0

Torque (ft-lb)

Efficiency (%) P. F. (%) Current (Amps)

55.0 50.0 84.0 29.7 0.00 3600

145 131 100 23.4 7.0 20.0

0 1800 3155 3537 3600

P.F. (%)

3600 3585 3570 3555 3537 3,525 3515 0

0.00 7.5 15.0 22.0 29.7 31.0 37.5 55.0

10.5 58.5 78.0 85.0 86.0 87.0 88.5 37.0

LR Pull-Up BD Rated Idle

FAREEDA DUDEKULA

7.0 9.0 13.0 18.0 23.4 26.0 29.5 145

1/25/2019 256TTGN16509

Load 0% 25% 50% 75% 100% 115% 125% LR

Current (Amps)

Torque (ft-lb)

RPM

Efficiency (%)

Motor Speed Data

LOAD

87.5 91.0 91.7 92.4 91.7 90.2

Data Sheet

Torque Amps

Uncontrolled Copy

Speed -Torque Curve

Motor Load Data

RPM

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

A

M

P

S

HP

Sync. RPM

Frame

0

0

Additional Specifications:

0.2530 0.2230 1.0790 1.1190 37.7720

R1 R2 X1 X2 Xm

EQUIV CKT (OHMS / PHASE)

VFD Rating

Outline Dwg B-SS203001-1225

Conn. Diag A-EE7308AD

Ref Wdg

Sound Pressure @ 1M

Rotor/Shaft wk²

Temp Rise @ FL

Duty

Ambient

Elevation

Frequency

Design

LR Code letter

Service Factor

Enclosure

Voltage

Construction

Information Block

K256288 NONE

CONSTANT 10:1

72 dBA

0.0

20.0

40.0

60.0

80.0

100.0

120.0

140.0

160.0

A

M

P

S

CONT

3,300

1.30

feet

Lb-Ft²

1.15

40

55

G

°

°

C

C

230/460#190/380

EPFC

TGS

60

B

Hz

256

V

Submittal

Data @

460

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