HT INDUSTRIAL AUTOMATION LIMITED

Automatic Voltage Regulator Mecc Alte AVR UVR6

SR7 , UVR6 Product Specification Download.pdf

We have Mecc Alte AVR UVR6 in our regular stock!

The Brands mentioned here are for reference purpose only, our parts can exactly replace the original ones.

The Mecc Alte UVR6 AVR Automatic voltage regulator is an advanced design electronic regulator that ensures excellent performance of the lternators while they are running and during starting. The regulator is equipped with a complete protection system against operation conditions that could be dangerous for the machine.

The Mecc Alte Automatic Voltage Regulator UVR6 is suitable for being used with all Mecc Alte alternators and is standard provide for power outputs above or equal to 85 KVA, both three-phase and single phase.

The components of this regulator (see fig. 8) are modern utilising solid-state integrated circuit technology. These components were chosen to guarantee maximum durability and reliability. The entire unit, also made using a hybrid circuit, is inside a box of modest dimensions that has been impregnated with resin to protect against vibrations and ingress of water. 

The terminal board is equipped with indications to help connection and avoid errors. Some connection diagrams that are suitable for different configurations are given on the back of the regulator.

2.2) Technical characteristics of AVR UVR6

2.2.1) Supply of AVR Mecc Alte UVR6

The supply to the regulator can be from 170 to 270 Vac between terminals + and 2 of the terminal board, with + and B not connected, or from 80 to 160 Vac between terminals + and 2 but with + and B connected to each other. Supply can also be separate from the sensing and in this case should be insulated from it.

2.2.2) Sensing of UVR6 AVR Mecc Alte

The regulator is equipped with three differential sensing inputs (terminals 1-2, 3-4, 5-6), which measure up to three different machine voltages. In this way you can check the average voltage on one or three phases of your choice.

The most common connections are the following:

a) Direct voltage adjustment of one of the phase windings, with the machine either star or delta connected.

b) Direct adjustment of the voltage of the three phase windings (also for 12 terminal machines), with the machine

either star or delta connected. In both cases (“a” and “b”), the passage of the machine connection from triangle to star does not need regulator connection modification.

c) Direct adjustment of the voltage to the terminals being used, with machine either star or delta connected.