Warner Electric Electro-Packs EP-250-W, EP-400-W - Manual (Page 5)

5 Warner Electric • 800-825-9050 P-1510 • 819-0475
Part Numbers
Model Voltage
No. DC Part No.
EP-250 24 5130-273-060
90 5130-273-061
EP-400 24 5131-273-030
90 5131-273-031
Selection Procedure
Determine the shaft speed at the Electro
Pack location. The number listed at the
intersection of horsepower and speed is
the size Electro Pack you require.
1/50
1/20
1/12
1/8
1/6
1/4
1/3
1/2
3/4
1
1-1/2
2
3
p p
HP
100 1000 200 300 400 500 600 700 800 900 1100 1200 1500 1800 2000 2400 3000 3600 4000 4500 5000
SHAFT SPEED AT CLUTCH (IN RPM)
EP-250
EP-400
Horsepower vs. Shaft Speed
Clutch/Brake Selection Information
Mechanical Specifications
Voltage Horsepower @ Static Torque Inertia–WR 2 (lb-in 2 ) Max. Weight
Model Size DC 1800 RPM lb. in. Output Input RPM lbs.
EP-250 24
1/2 70 .331 .293 7,500 7.1
90
EP-400 24
1 270 2.566 2.222 4,500 19.7
90
Electrical Coil Data
EP-250-W EP-400-W
Clutch/Brake Clutch/Brake
Voltage – DC 24 90 24 90
Resistance @ 20˚ C – Ohms 76.4 1079 73 1087
Current – Amperes .314 .084 .332 .083
Watts 7.5 7.51 8.04 7.45
Coil Build up – milliseconds 48 44 154 154
Coil Decay – milliseconds 15 13 60 55
Build-up time equals current to approximately 90% of steady state value and flux to 90%. Decay time equals current to approximately 10% of
steady state value and flux to 10%. Values are approximate because current changes lead or lag flux changes by a small amount.
Output
A
B
C
D
H
E
G
F E
D
C
B
Input
Brake Clutch
O
Dimensions
All dimensions are nominal, unless otherwise noted.
Size A B C Min. D E F G Max. H I J K L M N O
250-W 1/8 x .4995 1.250 2.468 3.312 2.250 8.968 .312 Wide 5.281 2.318 .375 1.625 3.250 4.250 1/2 - 14 NPT
1/8 x .4985 (4 slots) 2.308 conduit x 2
7/8 Dia.
400-W 3/16 x .7495 1.875 3.515 4.593 2.500 11.781 .312 Wide 6.937 3.474 .500 2.578 5.156 6.000 1/2 - 14 NPT
3/16 x .7485 (4 slots) 3.464 conduit x 2
1-3/8 Dia.
M
N
L
K
J
I