Flanged Electric Vibrators MVB - Italvibras - #1

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/CE).

These vibrators can be supplied in B, C, D versions (see page 86) 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:

Category: II 2 G,D

Level of protection: Ex e II, tD A21 IP66

Gas: T3 (200°C) or T4 (135°C) Dusts: 150°C

EC certificate: LCI E 06 ATEX Areas of use: 1, 2, 21, 22

Three-phase voltage from 220V to 690V, 50Hz or 60Hz; suitable for use with an inverter from 20Hztothe base frequency with constant torque load profile.

4 poles.

ATEX 94/9/CE; Electromagnetic Compatibility

89/336/CE

I EC/EN 60079-0, IEC/EN 60079-7, IEC/EN 61241-0, IEC/EN 61241-1, EN 60034-1, EN 50081-1, EN 50081-2, EN 50082-1, EN 50082-2.

The components that affect protection are 100% accurately controlled and recorded. The vibrators undergo 100% dynamic tests on the bench.

Continual service (SI) at maximum declared centrifugal force and electric power.

1500 Kgf. (14.7 KN), adjustable with variation of the eccentric weights.

IP 66 according to IEC 529, EN 60529.

IK08 according to IEC 68, EN 50102.

ClassF(155°C).

Standard with "drop by drop" trickle system.

From -10°C to +40°C, on request it is possible to have vibrators for max. environmental tem­peratures 55°C. On request special greases for temperatures less than -10°C.

Standard PTC rated thermistor heat detectors 130°C (DIN 44081 -44082) from size 80, on request for smaller sizes. Also on request thermistors with different temperatures and anti-condensation heaters.

In all positions and therefore without restric­tion.

All vibrators are lubricated in the factory and do not require further lubrication if used in normal operating conditions. In heavy duty operating conditions periodical re-lubrication may be applied.

Large fixed electrical connections. Special shaped terminals allow to fix the power supply cable, protecting it from loosening.

Three-phase asynchronous type. Insulated windings using "drop by drop" trickle system with class H resin. The rotor is die cast aluminium.

In ductile cast iron to have high strength and optimal elasticity.

An external earthing screw is located on the casing as prescribed by Regulation IEC/EN 60079-0.

Constructed in ductile cast iron. The geometry of the flange transmits the load to the casing uniformly.

Custom made with particulargeometry, especially designed for Italvibras, suitable to support both high radial and axial loads.

In treated steel alloy (Isothermic hardening) resistant to stress.

Lamellar for clamped centric weigh have an ample possibility of adjustment: the particular adjustment system adopted allows to obtain phase shift from 0 to 180° of the group of upper weights with respect to the group of lower weights and to have ample adjustment of the centrifugal force within the same group of weights.

Not envisioned in the MVB-E and MVB-E-FLC

II 2 G, D - Class Ex e II T4/T3 tD A21 IP 66. IEC/EN 60079-0, IEC/EN 60079-7, IEC/EN 61241-0, IEC/EN 61241-1. Certificate n° LCIE 06 ATEX

GGTN Permit and Gost-R certificate for increased safety Ex e: GOST R 51330.0-99, GOST R 51330.8-99, GOSTR IEC 61241-1-1-99.

Comply with the applicable European Union directives

Electrostatic surface treatment based on poly­merised epoxy polyester powder in oven at 200°C. Tested in salt spray for 500 hours.

The MVB-E and MVB-E-FLC series are equipped with special cable-holders in compliance with ATEX Ex e II Regulations and are characterised by two plates.