Automatic Power Factor Controller Type 1179

The Syntron Truly Intelligent Automatic Power Factor Controller type 1179 is specially designed to provide accurate and reliable control of Power Factor of an electrical installation.

1179 has Microcontroller technology. This is a Syntron exclusive trademarked as COSROBOT^TM . COSROBOT^TM . technology evolved at Syntron specifically for us ein APFCRs where the problems of electrical noise, transients etc, Are accentuated, and normal microprocessor technology fails under such condition.

1179 is a quantum leap over the other no-intelligent APFCRs like 1143.

Function
When switched on first, the 1179 measures it’s environment, and tells the user if there is anything wrong. Thus if the load current is extremely low (below about 0.5%) it gives a different display, if your connections are not correct, it gives an alarm, etc.

Once it knows that the panel is correctly connected in the system, it measures all capacitors under its control by switching them one by one, and store their valves and location (stage nos.) In memory. It them measures the Kvar at the main income and calculates the “BEST FITâ€� – i.e. The stages that when switched on would provide the best possible power factor without allowing it to go leading.

1179 then proceeds to switch them on one by one, all the time assessing the effect on the system, and re-calculating the Kvar requirement. The largest capacitor among those destined to be on is switched on first, so that the Power Factor is switched on first, so that the Power Factor is brought up as quickly as possible.

It switches off the capacitors one by one in like fashion, if the Power Factor goes leading, but this time switching the smallest capacitor off first.
Each stage of the 1179 has a corresponding software timer in memory. Thus whenever a stage is switched off the times begins counting 60 seconds, 1179 then does not switch it on even if needed, because that capacitor is charged, and re-switching it would ruin it on transients. 1179 then re-calulates and switches on other combination that will do the job. However the capacitor is used immediately after the timing is over.

Manual Control of the 1179 is also unique. You can select any stage and switch ONLY that stage on or off, without affecting the other stages.

Specifications
Voltage : 400-440 V (specify one) three phase three wire 50 Hz nominal
110V three phase versions available on request.
Current : Through CT on the Main Incomer. 1 Amp or 5 Amp secondary.
Low Current Cutout : Factory set at 1%. Display reads 1. uuu when the current is too low.
Wrong Connections : Three voltage wires and two wires from the CT on the main incomer connect the APFCR in the electrical system. The wiring must be made correctly. The APFCR switches off all stages and displays 2.uuu to warn the operator. This condition persists till correct connections are made.
Meter: 4 digit Digital Meter:Range:0.000 lag – 1.000 – 0.000 lead.
PF Setting Range : The controller being intelligent, you have no setting to make. It provides the best possible power factor under the system constraints.
Capacitor Swithing : Standard Models are for 4,6,8 and 10 stages, The capacitors are switched in reverse order of their size after calculating the requirements, i.e. the largest one in the chosen group is switched on first. The capacitors are switched off in the order of their size, i.e. the smallest capacitor is switched off first.
Contact Rating : Each contact is rated for maxima of 230 V, 5 Amps AC resistive loads. Provide a 2Amps fuse in the Common terminal, higher rating fuse will cause damage to controller in case of a fault in the contractor system.
Dimension: Front Bezel : 144mm X 144mm.
Panel Cutout: 138mm X 138mm.
Depth Behind Panel: 100mm, including terminals.
Weight: Approx 2 kg