How To Install Avr On Generator

Functions and Wiring Diagram AVR of Three Phase Generators
For those of you who accept activities in the field of electricity and power generation, especially Electricity, alternating current with 3 phases, of course know an important part that is independent in a generator, namely the AVR device.

Wiring Diagram AVR of Three Phase Generators, and Functions

wiring-diagram-avr-of-3-phase-generators

AVR generators Wiring diagram

AVR (Automated Voltage Regulator), AVR generally functions equally a voltage regulator automatically to remain stable in accordance with the expected voltage, At each ability establish, especially 3-phase alternating current electricity, information technology is certainly equipped with AVR as a tool to regulate the voltage to remain stable.

However, in addition to adjusting the output voltage produced by the generator, the AVR on the generator besides has several other functions.

Functions AVR of 3-phase Generators
The AVR used in the generator is very diverse, with a multifariousness of brands, models, types and sizes, and each AVR certainly has some differences, both in terms of quality, price, advantages, how to install, wiring, and features -Other additional features.

So, when we want to supplant the AVR Generators, make sure the AVR type is in accordance with the specifications of the generator, or for simplicity, replace the AVR with the same brand and model as the previous AVR.

In general, the type of AVR tin can exist divided into ii types, co-ordinate to the Generator Type:

AVR of Cocky-EXCITED GENERATORS
AVR of PMG-EXCITED GENERATORS

Some examples of brands and types of AVR commonly used in 3-stage Ac generators include:

Stamford AVR type MX-321
Stamford AVR blazon MX-341
Leroy Somer R-449 AVR
BESTRON AVR AVR Bestron type: VS420-7A-S1A2
AVR Marelli
AVR Marcon
AVR AVK MA-330
AVR SX440
AVR Universal
ABB AVR
And others

And it should be noted, that each AVR may have a series or different Wiring installation methods, To make information technology easier to understand AVR and its functions, we also need to know how the Principles of Generators, On this occasion we will try to share virtually the serial or wiring for AVR in general.

Installation of AVR on a generator consists of several parts that must be connected with cables in accordance with the wiring or AVR circuit, The cables that are connected to the AVR concluding take their respective functions and uses, and in full general the cables on the AVR are coded or letters or numbers to facilitate the installation of cables at the AVR terminal.

In lodge for AVR to function to stabilize the voltage produced by a generator, of course it requires several parts that must exist connected to the AVR, In general, the AVR consists of ii primary parts, namely:

AVR Input Terminal
Input values connected to AVR have functions, namely:

Power Supply for AVR
Sensing
Control

AVR Output Terminal
Output value of AVR has a function, namely:

Command
Control

AVR Input and Output, consists of several parts and functions that are connected from the Generator to the AVR, or from the AVR to the Generator or Command Panel, Actually, each AVR may take differences seen from the wiring diagram, the circuit and the method of installation, but in general the parts of the AVR have similar functions.

Therefore, to be able to find out the wiring of AVR Generator, it is amend to know in advance the functions of the terminal or cable contained in an AVR.

Example of AVR Self-Excited Generators Wiring diagram:

AVR Self-Excited Generators

Examples of AVR PMG-Excited Generators Wiring diagram:

AVR PMG-Excited Generators

From the examples of the AVR Wiring diagram higher up, there are differences in the terminal for PMG, In the first AVR, AVR Universal is not available terminal for PMG, while the second AVR has a terminal for PMG (Terminal with lawmaking X2, X1, Z2), in another types of AVR the PMG terminal uses P2, P3, P4.

The following are some parts that are ordinarily found on a wiring or cable last excursion in a 3 phase AVR AC generator.

AVR Input Terminal
Voltage supply from the Main Field, serves equally a voltage source every bit well as for sensing.

Sensing (Input Voltage)
The cable terminal on the AVR which functions equally a voltage supply (Input Power) or Sensing, ordinarily installed on:

L1 & L2 terminals
N & Ph Final
P2 & P3 terminals (AVR SX-440)
Terminals 6.7 & 8
Terminal S1 & S2 (ABB AVR type EA63-5)
Terminals 0V & 110V, 220V, 380V
Terminal 1,two,3

PMG Terminal
Terminals that are also used for voltage sources, specifically for generators equipped with PMG, are commonly institute in terminals P2, P3, P4 or X2, X1, Z2 or P1, P2, voltage produced by PMG commonly ranges from 150Vac - 220Vac.

A clarification of PMG and its functions

AVR Output Terminal
The Output Terminal on the AVR, unremarkably installed on:

Final Ten, XX
Concluding X +, X-
East + terminal, East-
F1, F2 terminals
Concluding F +, F-

The output on the AVR, is a value of voltage that is practical to the Exciter Stator field, The AVR Output Voltage to Exciter Stator usually ranges from 13Vdc - 60Vdc, The voltage applied to the Exciter depends on how much voltage (Sensing) the AVR receives from the generator voltage.

The college Sensing voltage, the AVR will automatically decrease the voltage to the Exciter, conversely if the Voltage Sensing lower, AVR volition increment the output voltage leading to the Exciter, With this working principle, AVR automatically keeps the output voltage of the generator to remain constant or stable.

If AVR does not requite the Voltage to the Exciter Scroll, of course the Generator volition not produce electric Voltage.

This last is usually given generator voltage from 12Vdc Battery when the Generator does not come out Voltage, to provide Voltage to the Exciter, usually this event when the Exciter field is just Rewinding, or the Generator has not operated for long time, so it needs external voltage, simply if the Generator is equipped with PMG it is not necessary.

Concluding Voltage Adjustment
In AVR in that location is a terminal that can be used for the addition of Potentio (Trimmer), this final is usually coded: Terminal 1, two

If you do non need an external voltage setting, this concluding must be jumped (continued), Commonly for Generators that are operated in parallel (synchronous), a voltage regulator in the control panel needs to be installed to facilitate synchronous or parallel processes.

CT Droop kit last
In the AVR that is used for a generator that is operated in parallel (Synchronous Generator), the AVR needs to exist connected to CT (Current Transformer) for sensor changes in Flow / Load. Especially for generators that operate in parallel, only if the generator operates unmarried, this last needs to be jumped.

The Droop kit CT terminal on the AVR is ordinarily connected to:

Concluding S1, S2
Terminal A1, A2
Terminal 1000, L

Over Current Protection Terminal
In the AVR there is usually a concluding that is connected to an overcurrent protection device such as an MCB, Fuse, or automatic disconnect, This terminal serves to maintain that when an Over electric current occurs in the Exciter, the protection volition disconnect the circuit, so that information technology tin secure the AVR and the Generator.

Over current Protection on the AVR, unremarkably installed on: Terminal K1, K2

Notation:
AVR terminals above is a general description, there can be differences in the Final on the AVR with a unlike Brand or Type.
In each AVR generator, it has several differences according to the wiring or circuit of the manufacturer.
Of course we need to make sure that each AVR is adjusted to the Wiring from the bachelor guide.

My Electrical Diary