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MVB-E/MVB-E-FLC
The MVB-E and MVB-E-FLC flanged vibrator series have
been designed for use in industrial processes with screens
and sieves in environments with a potentially explosive
atmosphere, caused by gas and dusts, in compliance with
ATEX Directive (94/9/EC).
These vibrators can be supplied in B, C, D versions (see
page 70) according to the eccentric weights supplied with
the vibrator and to be mounted by the user.
In particular, these vibrators can be used in areas 1 and 2
(gas) and in areas 21 and 22 (dusts) according to the layout
and the following features:
Technical features
Power supply Protection against mechanical impacts Terminal box
Three-phase voltage from 220V to 690V, IK 08 according to IEC 68, EN 50102. Large fixed electrical connections.
50Hz or 60Hz; suitable for use with a Special shaped terminals allow to fix the
PWM inverter from 20Hz to the base fre- Insulation class power supply cable, protecting it from
quency with constant torque load profile. Class F (155°C). loosening.
Polarity Tropicalization Electric motor
4 poles. Standard with “drop by drop” trickle system. Three-phase asynchronous type. Insula-
ted windings using “drop by drop” trickle
Conformity with European Directives Ambient temperature system with class H resin.
Low Voltage 2006/95/EC, From -20°C to +40°C, on request it is pos- The rotor is die cast aluminium.
ATEX 94/9/EC. sible to have vibrators for max. ambient
temperature +55°C. Casing
Reference Regulations In spheroidal cast iron to have high
IEC/EN 60079-0, IEC/EN 60079-7, Vibrator thermal protection strength and optimal elasticity.
IEC/EN 60079-31, EN 60034-1. On demand with PTC rated thermistor heat An external earthing screw is located on
detectors 130°C (DIN 44081-44082). Also on the casing as prescribed by Regulation
Controls request thermistors with different tempe- IEC/EN 60079-0.
The components that affect protection are ratures and anti-condensation heaters.
100% accurately controlled and recorded. Bearing flange
Fixing of the vibrator Constructed in spheroidal cast iron.
Functioning In all positions and therefore without The geometry of the flange transmits the
Continual service (S1) at maximum decla- restriction. load to the casing uniformly.
red centrifugal force and electric power.
Lubrication Bearings
Centrifugal force All vibrators are lubricated in the factory Custom made with particular geome-
1500 Kgf. (14.7 KN), adjustable with varia- and do not require further lubrication try, especially designed for Italvibras,
tion of the eccentric weights. if used in normal operating conditions suitable to support both high radial and
(“FOR LIFE” lubrication). In heavy duty axial loads.
Mechanical protection operating conditions periodical re-lubri-
IP 66 according to IEC 529, EN 60529. cation may be applied. N
B
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