CHT 355 Cast Iron Three-Phase Motor 2-Pole (220–315 kW)
CHT 355 cast iron three-phase motor, 2-pole (about 3000 r/min at 50 Hz) — Chiaravalli's IEC frame 355 cast iron motors in the IE3 / IE4 efficiency classes, 220–315 kW. Cast iron casing, IP54, class F insulation, IC411 fan cooling, Δ/Y 400/690 V 50 Hz. Mounting B3 (foot), B5 (flange) or B35 (foot and flange): pick it in the table's Mounting filter; the dimension sheets give the frame 355 mounting dimensions per efficiency class.
How to pick from the table: choose the power, the efficiency class — IE3 or IE4 (we supply IE3 and above only from 0.75 kW up; IE4 where the energy saving pays) — and the mounting. The type letter is the motor's length designation within the frame. Forced-cooling fan kits for inverter duty are available for every frame (catalogue p8).
Product Configuration
Select a row to add it to your quote
Three-phase Δ/Y 400/690 V 50 Hz; IP54, insulation class F, IC411 cooling; efficiency to IEC 60034-30 / 60034-2-1. The table opens on the B3 mounting — switch the filter for B5 or B35.
| Code | Mounting | Type | Efficiency class | Power | Speed | Torque | Current at 400 V | Efficiency | cos φ | Efficiency at 75 % | Efficiency at 50 % | Ms / Mn | Mmax / Mn | Is / In | J0 | Weight |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CHT 355 MA2 IE3 B3 |
B3
|
MA
|
IE3
|
220 kW
|
2960 r/min
|
709.8 Nm
|
394.6 A
|
95.8 %
|
0.84
|
96.2 %
|
94.8 %
|
2
|
2.3
|
6.5
|
2.9559 kg m²
|
1501.0 kg
|
CHT 355 MB2 IE3 B3 |
B3
|
MB
|
IE3
|
250 kW
|
2960 r/min
|
806.6 Nm
|
448.4 A
|
95.8 %
|
0.84
|
96.2 %
|
94.8 %
|
2
|
2.3
|
6.5
|
3.1427 kg m²
|
1538.0 kg
|
CHT 355 MB2 IE4 B3 |
B3
|
MB
|
IE4
|
250 kW
|
2980 r/min
|
801.5 Nm
|
420.1 A
|
96.5 %
|
0.89
|
96.5 %
|
96 %
|
1.6
|
2.2
|
8.5
|
4.481 kg m²
|
1678.0 kg
|
CHT 355 LA2 IE3 B3 |
B3
|
LA
|
IE3
|
280 kW
|
2960 r/min
|
903.4 Nm
|
502.2 A
|
95.8 %
|
0.84
|
96.2 %
|
94.8 %
|
2
|
2.3
|
6.5
|
3.4791 kg m²
|
1679.0 kg
|
CHT 355 LB2 IE3 B3 |
B3
|
LB
|
IE3
|
315 kW
|
2960 r/min
|
1016.3 Nm
|
558.3 A
|
95.8 %
|
0.85
|
96.2 %
|
94.8 %
|
2
|
2.3
|
6.5
|
3.8529 kg m²
|
1765.0 kg
|
CHT 355 LB2 IE4 B3 |
B3
|
LB
|
IE4
|
315 kW
|
2980 r/min
|
1009.9 Nm
|
529.4 A
|
96.5 %
|
0.89
|
96.5 %
|
96 %
|
1.6
|
2.2
|
8.5
|
5.6041 kg m²
|
1939.0 kg
|
CHT 355 MA2 IE3 B5 |
B5
|
MA
|
IE3
|
220 kW
|
2960 r/min
|
709.8 Nm
|
394.6 A
|
95.8 %
|
0.84
|
96.2 %
|
94.8 %
|
2
|
2.3
|
6.5
|
2.9559 kg m²
|
1501.0 kg
|
CHT 355 MB2 IE3 B5 |
B5
|
MB
|
IE3
|
250 kW
|
2960 r/min
|
806.6 Nm
|
448.4 A
|
95.8 %
|
0.84
|
96.2 %
|
94.8 %
|
2
|
2.3
|
6.5
|
3.1427 kg m²
|
1538.0 kg
|
CHT 355 MB2 IE4 B5 |
B5
|
MB
|
IE4
|
250 kW
|
2980 r/min
|
801.5 Nm
|
420.1 A
|
96.5 %
|
0.89
|
96.5 %
|
96 %
|
1.6
|
2.2
|
8.5
|
4.481 kg m²
|
1678.0 kg
|
CHT 355 LA2 IE3 B5 |
B5
|
LA
|
IE3
|
280 kW
|
2960 r/min
|
903.4 Nm
|
502.2 A
|
95.8 %
|
0.84
|
96.2 %
|
94.8 %
|
2
|
2.3
|
6.5
|
3.4791 kg m²
|
1679.0 kg
|
CHT 355 LB2 IE3 B5 |
B5
|
LB
|
IE3
|
315 kW
|
2960 r/min
|
1016.3 Nm
|
558.3 A
|
95.8 %
|
0.85
|
96.2 %
|
94.8 %
|
2
|
2.3
|
6.5
|
3.8529 kg m²
|
1765.0 kg
|
CHT 355 LB2 IE4 B5 |
B5
|
LB
|
IE4
|
315 kW
|
2980 r/min
|
1009.9 Nm
|
529.4 A
|
96.5 %
|
0.89
|
96.5 %
|
96 %
|
1.6
|
2.2
|
8.5
|
5.6041 kg m²
|
1939.0 kg
|
CHT 355 MA2 IE3 B35 |
B35
|
MA
|
IE3
|
220 kW
|
2960 r/min
|
709.8 Nm
|
394.6 A
|
95.8 %
|
0.84
|
96.2 %
|
94.8 %
|
2
|
2.3
|
6.5
|
2.9559 kg m²
|
1501.0 kg
|
CHT 355 MB2 IE3 B35 |
B35
|
MB
|
IE3
|
250 kW
|
2960 r/min
|
806.6 Nm
|
448.4 A
|
95.8 %
|
0.84
|
96.2 %
|
94.8 %
|
2
|
2.3
|
6.5
|
3.1427 kg m²
|
1538.0 kg
|
CHT 355 MB2 IE4 B35 |
B35
|
MB
|
IE4
|
250 kW
|
2980 r/min
|
801.5 Nm
|
420.1 A
|
96.5 %
|
0.89
|
96.5 %
|
96 %
|
1.6
|
2.2
|
8.5
|
4.481 kg m²
|
1678.0 kg
|
CHT 355 LA2 IE3 B35 |
B35
|
LA
|
IE3
|
280 kW
|
2960 r/min
|
903.4 Nm
|
502.2 A
|
95.8 %
|
0.84
|
96.2 %
|
94.8 %
|
2
|
2.3
|
6.5
|
3.4791 kg m²
|
1679.0 kg
|
CHT 355 LB2 IE3 B35 |
B35
|
LB
|
IE3
|
315 kW
|
2960 r/min
|
1016.3 Nm
|
558.3 A
|
95.8 %
|
0.85
|
96.2 %
|
94.8 %
|
2
|
2.3
|
6.5
|
3.8529 kg m²
|
1765.0 kg
|
CHT 355 LB2 IE4 B35 |
B35
|
LB
|
IE4
|
315 kW
|
2980 r/min
|
1009.9 Nm
|
529.4 A
|
96.5 %
|
0.89
|
96.5 %
|
96 %
|
1.6
|
2.2
|
8.5
|
5.6041 kg m²
|
1939.0 kg
|
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Product Information
Reading the table
Every row is one motor of this frame and pole count: the mounting, the type letter (the catalogue's length code), the efficiency class, rated power, speed, rated torque, current at 400 V, efficiency and power factor. "Show starting and part-load data" adds the starting torque and current ratios (Ms/Mn, Mmax/Mn, Is/In), the rotor inertia J0 and, for IE3 / IE4 motors, the efficiency at 75 % and 50 % load.
Mounting
The table opens on B3 (foot). Switch the Mounting filter to B5 (flange) or B35 (foot and flange); the electrical data is the same, the mounting dimensions are on the dimension sheets per efficiency class.
Efficiency classes
From January 2017 the EU regulation (CE) 640/2009 requires motors of 0.75 to 375 kW with 2, 4 or 6 poles sold in the European market to be at least IE3. Nusaf supplies IE3 and above only from 0.75 kW up — IE1 motors are listed below 0.75 kW only. Efficiency figures follow IEC 60034-30 / 60034-2-1.
Fitting to a gearbox
The frame size is the IEC size the gearbox flange is specified by — a gearbox listed for "IEC 80" takes a frame 80 motor in B5 or B14.
- Material
- Cast iron casing
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