ITALVIBRAS
64
H
B
N
MTF
-
E
The MTF-E series has been designed for use in industrial
processes in environments with a potentially explosive
atmosphere, caused by gas and dusts, in compliance with
ATEX Directive (94/9/EC).
In particular, the MTF-E series can be used in areas 1 and
2 (gas) and areas 21 and 22 (dusts) according to the layout
and following features:
Power supply
Three-phase voltage from 220V to 690V,
50Hz or 60Hz; suitable for use with a
PWM inverter from 20Hz to the base fre-
quency with constant torque load profile.
Polarity
2 and 4 poles.
Conformity with European Directives
Low Voltage 2006/95/EC,
ATEX 94/9/EC.
Reference Regulations
IEC/EN 60079-0, IEC/EN 60079-7,
IEC/EN 60079-31, EN 60034-1.
Controls
The components that affect protection
are 100% accurately controlled and
recorded.
Functioning
Continual service (S1) at maximum decla-
red centrifugal force and electric power.
Centrifugal force
Range extended up to 2615 Kgf. (25.7 KN),
with centrifugal force adjustable from 0
to 100%.
Mechanical protection
IP 66 according to IEC 529, EN 60529;
mechanical protection is ensured in the
mounting phase of the vibrator onto the
vibrating machine, by introducing the
special seal into the seat on the coupling
flange.
Protection against thermal protection
IK 08 according to IEC 68, EN 50102.
Insulation class
Class F (155°C).
Tropicalization
Standard on all vibrators, with vacuum
encapsulation up to size 30, with “drop
by drop” trickle system for larger sizes.
Ambient temperature
From -20°C to +40°C, on request it is pos-
sible to have vibrators for max. ambient
temperatures of +55°C.
Vibrator thermal protection
On demand with PTC rated thermistor heat
detectors 130°C (DIN 44081-44082). Also on
request thermistors with different tempe-
ratures and anti-condensation heaters.
Fixing of the vibrator
In all positions and therefore without
restriction.
Lubrication
All vibrators are lubricated in the factory
and do not require further lubrication if
used in normal operating conditions. In
heavy duty operating conditions perio-
dical re-lubrication may be applied to
frame sizes 40-50-70.
Electrical connection box
The size guarantees passage of tools
used for fixing the vibrator to the vibra-
ting machine.
The electrical connection must be carried
out using the relative connectors inser-
ted inside the connection box.
Special shaped terminals allow to fix the
power supply cable, protecting it from
loosening.
Electric motor
Three-phase asynchronous type. De-
signed for maximum starting torques
and torque curves adapt for the specific
requirements of vibrating machines.
Insulated windings using vacuum encap-
sulating up to size 30; using the “drop by
drop” trickle system with class H resin
for sizes 40-50-70. The rotor is die cast
aluminium.
Casing
In high-tensile aluminium alloy up to size
50, in spheroidal cast iron for size 70.
An external earthing screw is located on
the casing as prescribed by Regulation
IEC/EN 60079-0
Bearing flange
Constructed in cast iron (ductile or grey)
or in aluminium with steel bearing seat.
The geometry of the flange transmits the
load to the casing uniformly.
Bearings
The lower and upper bearings have been
studied to support the relative load and
therefore they have a particular geome-
try, especially designed and made for
Italvibras.
Technical features