APF series

ModelA1C A2C A3C
B1C B2C B3C
PowerUp to 540 kW
VoltagesUp to 690 V
Frame63 ÷ 355
Poles2, 4, 6, 8, 10 and 12
CoolingIC 411 as standard
IC 416 and IC 418 available as option
IPIP 55 as standard
IP 56, IP 65 or IP 66 available as option
EnclosureTEFC MOTORS – Totally Enclosed Fan Cooled
Main ApplicationsAir conditioning, Compressors, Manufacturing processes, Metals, Mining, Power, Pulp and paper, Sugar mill, Water pumping and treatments
SectorIndustrial
  • Poles | kW | 50 Hz
  • Poles | kW | 60 Hz
  • Main components
  • Construction
  • Technical data
  • Optional features

Poles | kW | 50 Hz

2
2
Up to 450
4
4
Up to 450
6
6
Up to 355
8
8
Up to 315
10
10
Up to 160
12
12
Up to 132

Poles | kW | 60 Hz

2
2
Up to 540
4
4
Up to 540
6
6
Up to 426
8
8
Up to 378
10
10
Up to 192
12
12
Up to 158

Main components

Housing
Housing
Motors from size 63 to 180 are made in aluminum or cast iron.
Starting from frame 200 and up to 355 the frame is in cast iron only.
(EN 1561-GJL – 200)
Shield
Shield
Made of aluminum for aluminum motors.
Made of grey cast-iron (EN 1561 – GJL 200) for cast iron motors.
Shaft
Shaft
Shaft design
Cylindrical shaft with key.
Material
Material
The table below, show the materials used on the mechanical components for standard motors.

ComponentsFrame size
A_C 63-180
Frame size
B_C 63-315
Frame size
B1C/B2C 355
Frame size
B3C 355
Frame size
B_C 355K
Housing Aluminum Cast Iron Cast Iron Cast Iron Cast Iron
Endshields D-End
Endshields N-End
Fan FRPP* FRPP* Aluminum FRPP* Steel
Fan cover Steel Steel Steel Steel
Terminal box Aluminum Cast iron Cast Iron Cast Iron Cast Iron
Terminal box cover

FRPP* Flame Retardant Polypropilene
Main terminal box
Main terminal box
Mounted on top and made of aluminum or cast iron depending from size.
Degree of protection of standard terminal box is IP 55.

A_C 63-180
Frame sizeType of terminalTerminal size Maximun cable diameter (mm)Clearance holes formetric cablands
A1C / A2C 63-71 Threaded Terminals M4 10 M18 x 1.5
A_C 80 M4 12 M20 x 1.5
A_C 90-100 M4 M20 x 1.5 + M16 x 1.5 (aux)
A_C 112-132 M5 12 2-M20 x 1.5 + M16 x 1.5 (aux)
A_C 160-180 M6 25 2-M32 x 1.5 + M16 x 1.5 (aux)

B_C 71-355
Frame sizeType of terminalTerminal size Maximun cable diameter (mm)Clearance holes formetric cablands
B_C 71-80 Threaded Terminals M4 18 M25 x 1.5
B_C 90-100 M4 18 M25 x 1.5 + M16 x 1.5 (aux)
B_C 112-132 M5 25 2-M32 x 1.5 + M16 x 1.5 (aux)
B_C 160-180 M6 32 2-M40 x 1.5 + M16 x 1.5 (aux)
B_C 200-225 M8 38 2-M50 x 1.5 + M16 x 1.5 (aux)
B_C 250-280 M10 44 2-M63 x 1.5 + M16 x 1.5 (aux)
B_C 315 M12 44 2-M63 x 1.5 + M16 x 1.5 (aux)
B_C 355 M20 44 2-M63 x 1.5 + M16 x 1.5 (aux)

Construction

Cooling System
Cooling System
IC 411 as per IEC60034-6
Totally enclosed standard motor, frame surface cooled with fan
4: Frame surface cooled
1: Self circulation of primary coolant
1: Self circulation of secondary coolant
On request for variable speed application an external ventilation unit can be supplied to get the IC 416 cooling type.
Also IC 418 ventilation (ventilation provided by air flowing from the driven system) is available on request.
Degree of protection
Degree of protection
Motors are supplied in IP 55 as per IEC60034-5 (IP 56, IP 65 or IP 66 available on request)
Mounting
Mounting
Mounting and positions are defined according to IEC 60034 - 7
See complete list on Industrial motors catalogue.

Technical data

Bearing
Bearing
General data

Antifriction bearings grease lubricated (ball or roller type).
The theoretical lifetime of bearings, L10h according to ISO 281/1 standard, of standardhorizontal construction motors, without external forces (radial and/or axial) is in excessof 50.000 hours.
On request, the lifetime of bearings, L10h can be in excess of 100.000 hours.
Locating bearings are on the D-End side and floating bearings on the ND end side.
On request special bearings are designed where high radial and axial forces are applied.
The motors ≤ 132 frame size have double screen prelubricated ball bearings.
The motors from 160 to 180 frame size have single screen prelubricated ball bearings.
The correspondent grease life under normal operating conditions for a motor with horizontal shaft, at 50Hz and maximum ambient temperature of 40°C is
  • 10.000 hours in continuous duty for 2-pole motors,
  • 20.000 hours in continuous duty for 24-pole motors.

The motors from 280 frame size and above have regreasable bearings (with greasenipples Tecalemit UNI type) and the relative exhausted grease drainage.
For initial charge of standard motor bearings a grease with mineral oil as basic oil and lithium soap as thickener, NLGI consistency grade 3, is used.
Motors for unfavourable operating conditions can be lubricated with special grease.
The name plate indicates the type of grease, the quantity and the relubrication intervals.
Impregnation system
Impregnation system
VPI with an epoxy resin.
Insulation system
Insulation system
Low voltage
Stator: F class insulated with a synthetic enamel.
(H class insulation available on request)
Protective treatments
Protective treatments
External surfaces

The surface treatment categorization of motors is based on the ISO 12944 standard.
ISO 12994-5 divides paint system durability into three categories: low (L), medium (M), and high (H).
Low durability corresponds to a lifetime of 2-5 years, medium to 5-15 years, and high durability to over 15 years.

The durability range is not a guaranteed lifetime. Its purpose is to help the owner of the motor plan for appropriate maintenance intervals. More frequent maintenance may be required because of fading, chalking, contamination, wear and tear, or for other reasons.


The painting treatment of motors in standard configuration is in accoordance to C1 low corrosivity category which is suitable for indoor atmospheres (Heated buildings with a clean atmosphere).

Internal surfaces

Motor endwindings can be tropicalized with an insulating enamel to prevent motor corrosion due to humidity and aggresive substances. The standard configuration offers the following solutions:

  • Aluminum motors (63÷180): tropicalization is optional;
  • Cast iron motors (63÷355): tropicalization is standard.

Aluminum motors can be supplied with tropicalization on request.
Grounding
Grounding
Motors in standard configuration are provided with the following grounding terminals:

ALUMINUM MOTORSFrame size
-63 71 80 90 100 112 132 160 180 200-355
IE1 C1 C2
IE2 C2
IE3 - - C1 C2

CAST IRON MOTORSFrame size
-63 71 80 90 100 112 132 160 180 200-355
IE1 C1 C2
IE2 C2
IE3 - - C2

C1 | Configuration 1 : n°1 terminal in main terminal box
C2 | Configuration 2 : n°2 terminals, one inside the terminal box and one outside
Condensation drainage
Condensation drainage
When installed outdoors or used for intermittent work in environments with high humidity levels, motors must be provided with holes for condensation drainage.
In order to assure the correct positioning of the holes the operating position of the motors must be specified.
Motors with frame sizes from 280 to 355 have holes for condensation drainage as standard.
Motors can be supplied with drainage holes on request.
Anticondensation heaters
Anticondensation heaters
Motors subject to atmospheric condensation, either through standing idle in damp environments or because of wide ambient temperature variations, may be fitted with anticondensation heaters.
Anticondensation heaters are normally switched on automatically when the supply to the motor is interrupted, heating the motor to avoid water condensation.
They are normally mounted on D-End winding heads.
Normal feeding voltage is 220//230/240V.
Motors can be supplied with anticondensation heaters with terminals in main terminal box.
The power values normally used are shown in the table below:

Frame size Power (W)
63-112 10
132-160 30
180-200 50
225-250 65
280 100
315S 130
315M 200
355/355K 300
Thermal protections
Thermal protections
Standard magnetothermal circuit brakers are sufficient to suitably protect the motor from overloading.
Anyway the motors can be supplied with additional thermal protections with the characteristics described in the following table.

TypeOperating principleActive temperature [°C]
Positive temperature coefficient thermistors PTCAt the active temperature this device quickly changes its resistance value.155
Platinum resistance thermometer PT100Variable linear resistance with the winding temperature, particularly suitable for a continuous winding temperature monitoring.Set up in control panel


Motors from 160 frame size are supplied with N. 3 PTC with terminals in main terminal box, in standard configuration.
Motors from 160 frame size can be supplied with PT100 thermal detectors on the bearings on request.

Optional features

List
List
Options and configurations

Options available are listed below. Please note some options cannot be selected together.

Key

(1) Optional for aluminium motors, standard for cast-iron motors
(2) Optional for 160-250 sizes, standard for 280-355 sizes
(3) Optional for 160-355 sizes, standard for 355K motor sizes

s = standard
o = optional
x = contact Marelli Motori
n/a = not available

OptionDescription63÷132160÷355
100 Insulation class H o o
102 N° 9 Terminals o o
103 N° 12 Terminals o o
104 Flying Leads = L 1000mm n/a n/a
105 VPI Impregnation s s
107 Tropicalisation o/s(1) o/s(1)
108 Anticondensation heaters, with terminals in main terminal box o o
109 Anticondensation heaters, with terminals in auxiliary terminal box n/a n/a
110 Bi-metal cut-out switch with terminals in main terminal box o o
111 PTC thermistors with terminals in main terminal box o s
112 PT100 thermodetectors with terminals in main terminal box o o
113 Bi-metal cut-out switch with terminals in auxiliary terminal box n/a n/a
114 PTC thermistors with terminals in auxiliary terminal box n/a n/a
115 PT100 thermodetectors with terminals in auxiliary terminal box n/a n/a
120 Transducer for thermodetectors PT100 n/a o
122 PT100 thermodetector in D-End bearing - single element n/a o
123 PT100 thermodetector in D-End bearing - double element n/a o
124 Protection degree IP66 o o
125 Protection degree IP56 o o
126 Protection degree IP65 o o
127 Second shaft end o o
128 Sealed bearings s o
129 Roller bearings on D-End n/a o
129bis N-End angular contact bearing for high axial loads (vertical mounting) n/a o
130 Oil seal s o
131 Drainage hole with tap o o/s(2)
133 Vibration level B o o
134 Metallic Fan o o
136 D-End special shaft extension o o
137 Low temperature duty -25°C -40°C o o
138 D-End and N-End grease nipples n/a s
139 Arrangement for SPM D-End side n/a o
140 Complete with vibration transducer D-End side standard type (CEMB) n/a o
141 Complete with vibration transducer D-End side Bently Nevada type n/a o
160 Arrangement for encoder standard type o o
160bis Arrangement for encoder special type o o
161 Complete with encoder standard type o o
165 Brake adaption like Precima or Pintsch Bubenzer o o
170 Anti rain canopy for IM V1 s s
171 Anti sun canopy o o
174 Locked D-End bearing s s
177 3-Phase forced ventilation x o
178 Enhanced insulation system for Inverter application < 500V n/a n/a
179 Special fan for reduced noise level o o
180 Insulated N-End bearing - Horizontal Mounting (≥280 frame) n/a o
181 Insulated N-End bearing - Vertical Mounting (≥280 frame) n/a o
188 Enhanced insulation system for Inverter ≥500V (≥280 frame) n/a o
221 Special cable entry direction o o
222 Lateral terminal box (dedicated housing for B_C motors) o o/s(3)
304 Special voltage and/or frequency o o
312 Special cable entry o o
313 Brass cable glands o o
317 Additional nameplate for VFD o o
318 TAG plate o o
319 Additional Rating Nameplate o o
320 Nameplate with final customer logo o o
321 "Made in" Nameplate o o
325 Stainless steel screws o o
919 Non standard RAL paint colour o o
930 Special painting process for aggressive environments (F96819) o o
931 Special painting process for aggressive environments (F96826) o o
932 Special painting process for aggressive environments (F96827) o o

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