sew-eurodrive.ca

Login
 
You are here: Home >

Gear Units / Gearmotors

Documentation
  Documentations for: Gear Units / Gearmotors
Products
Field of application
Directive 94/9/EC or ATEX specifies new regulations for explosion protection for all types of devices for the European market.

This directive applies to gearmotors and motors. As of July 1, 2003, directive 94/9/EC applies without restriction to the use of gearmotors and motors within the European Union. Other European countries, such as Switzerland, have also adopted this regulation.

Scope
SEW-EURODRIVE now supplies explosion-proof gearmotors and motors only in accordance with the corresponding ATEX directive. This also applies to options and accessories in the explosion-proof version.

SEW-EURODRIVE offers gearmotors and motors of categories

for use in zones 1, 21, 2 and 22

Zone
Units that can be used
Gas
Dust
Presence of explosive atmosphere
Gas
Dust
Safety
0
20
Continuously, frequently or over long periods
 
1
21
Occasionally
II2G
II2D
High
2
22
Seldom, short-term
II2G
II2D
II3G
II3D,
Normal

ATEX-compliant EC prototype test certificate
Explosion-proof AC asynchronous motors in category 2 (94/9/EG) in combination with SEW frequency inverters

Below is an overview of the benefits of this combination in comparison to an AC asynchronous motor in protection type “d” (EN 60079-1 flameproof enclosure).

It is important to observe and comply with guidelines particularly in areas containing potentially-explosive air/gas or air/dust mixtures. Thanks to many years of experience and competency in this area, SEW-EURODRIVE guarantees that the applicable guidelines are observed. Furthermore, the company’s expertise is continually being expanded to include new and further developments.

This basic type of approval was implemented for all 4-pole motors of category 2 from SEW-EURODRIVE, and certificates are available for all eDT and eDV motors.

The new approvals for the motors were performed according to the new European standards applicable to explosion protection:

Gas (EN 60079-0; EN 60079-7) and dust (EN 61241-0; EN 61241-1).

These motors meet the requirements for equipment intended for use in potentially-explosive areas of category 2 as defined in directive 94/9/EC (ATEX 95). A device for direct temperature monitoring in combination with the defined parameters of the frequency inverter offers the best possible protection against excessive heating caused by an overload.

Technical data
eDT/eDV motors in 15 sizes
PMains [kW]
MMains [Nm]
MFI [Nm]
IN-FI at 400 V/50 Hz [A]
0.37 – 16.0
2.6 – 103.9
2.2 – 85.3
1.04 – 26.8

Compared to the nominal torque, the permitted overload value had to be changed when the frequency inverter was operated to the values given in order to guarantee thermally safe operation. Convert the currents for voltage 400 V/50 Hz in star connection and the currents for delta connection 230 V/50 Hz (400 V/87 Hz) using the factor √3.

Explosion-proof motors / Gearmotors
Your benefits

Gear Units / Gearmotors
Explosion-proof drives
Operating systems and machines in areas with potentially explosive air / gas or air / dust mixtures requires special measures. If mixture formation cannot be prevented, specially protected drives must be used. Applicable standards and regulations govern the use of equipment within existing hazard zones. They also prescribe the quality prerequisites that must be met by drive manufacturers.

Technical data
Category/zone
Types
Power range [kW]
II3D / II3G
R..D../II3 helical gearmotors
F..D../II3 parallel shaft helical gearmotors
K..D../II3 helical-bevel gearmotors
0.12 to 75
S..D../II3 helical-worm gearmotors
0.12 to 22
SPIROPLAN® gearmotors W..D../II3
0.12 to 0.75
II2D
R..D../II2D helical gearmotors
F..D../II2D parallel shaft helical gearmotors
K..D../II2D helical-bevel gearmotors
0.37 to 22
S..D../II2D helical-worm gearmotors
0.37 to 22
SPIROPLAN® gearmotors W..D../II2D
0.37 to 0.75
II2G
R..D../II2G helical gearmotors
F..D../II2G parallel shaft helical gearmotors
K..DG/II2D helical-bevel gearmotors
0.15 to 16
S..D../II2G helical-worm gearmotors
0.15 to 16
SPIROPLAN® gearmotors W..D../II2G
0.15 to 0.75
II2G_T4
R..D../II2G_T4 helical gearmotors
F..D../II2G_T4 parallel shaft helical gearmotors
K..D../II2G_T4 helical-bevel gearmotors
0.15 to 1.5
S..D../II2G_T4 helical-worm gearmotors
0.15 to 1.5
SPIROPLAN® gearmotors W..D../II2G_T4
0.15 to 0.55

 
back to top