W21Xdb – Flameproof Ex db

W21Xdb is an explosion-proof motor especially designed to operate in environments with the presence of explosive atmospheres. It has robust construction, a flame retention system with gaps between the parts carefully designed, accurate machining on the terminal box and screws with high mechanical strength. It meets the requirements of explosive atmospheres like Zone 1 and Zone 2, Group IIA and IIB, Temp. T4.The W21Xdb comply with the efficiency level, specified by IEC 60034-30-1.

Output

:

0.37 up to 330 kW

Poles

:

II up to VIII

Frame

:

90S/L up to 355M/L

Voltage

:

220-240/380-415 V (up to frame 100L)

380-415/660 V (frames 112 and above)

Frequency

:

50 or 60 Hz

Hazardous Area

:

Zone 1 – Gas Group IIB

Temperature Class

:

T4 (with inverter application T3)

Certification Marking

:

Ex db IIB T4 Gb

Enclosure

:

IC411 – Totally Enclose Fan Cooled (TEFC)

Protection

:

IP55

Insulation Class

:

F

Temperature Rise

:

B (80K)

Ambient Temperature

:

-20˚ C to +40˚ C at 1000 m.a.s.l.

Frame Material

:

Cast iron

Bearing Cap

:

Internal DE and NDE bearing cap to prevent flame propagation

Bearing Seals

:

Lip Seal frame 90 up to 280 (all poles) 315 up to 355 (2-pole)

Taconite 315-355 (4 up to 8 poles)

Thermal Protection

:

Thermistor PTC 150˚ C – 2 wires – one per phase

Finish Colour

:

RAL 5010 (IE1 motor)

RAL 5009 (IE2 motor)

Standard

:

IEC / NEMA

Manufacturing Site

:

WEG Motores (Brazil)

Certification

TÜV Rheinland

ATEX & IECEx certification