The power factor plays a vital role in entire electrical distribution network. The ratio of productive power (KW) to total power (KVA) is power factor. It is a measure of system electrical efficiency in an A.C. circuit, and is represented as a % or a decimal. A large number of electric machineries and light fittings has inherently low power factor which mean that the supply authorities have to generate much more current then is normally required. In addition transformers and cables also have to carry this extra current. To obtain best possible economic advantage from electric power, both the generation plant and consumer’s plant should be operated at higher efficiency. To achieve this it is essential to have higher power factor (nearing to unity) throughout the system.
The Automatic Power Factor Improvement Capacitor Panels designed and manufacture by SHEPHERD are purely custom designed as per the need of customer, location, loading pattern etc.. Using very sophisticated microprocessor based digital relays, which senses the actual P.F. at any point of time and compares it with the required P.F. it automatically switches ON or OFF the Capacitors. Relays capable of sensing and providing alarm signals for dangerous level of harmonics, resonance, temperature and capacitance drop can also be provided. Depending on the load condition, to get optimum power factor efficiency, the required capacitors are switched ON. The standard range is 2.5,5,10, 15 and 25 KVAR, there after capacitors are banked together as per site loading condition. The capacitors usually preferred are highly reputed makes for L.T applications and are manufactured using paper and polypropylene as dielectric; these capacitors are usually impregnated with oil.
Our APFC panels are well designed and also having manual function optionally. Indications for ‘Alert On’ for system failures like fuses blown, banks out of service, contactors welded or open etc.. Alarms for over current, over voltage, over temperature and also regular compensation indicator, low voltage release, low signal release etc. can be incorporated as per actual requirements.
The capacitors usually preferred are highly reputed makes for L.T applications and are manufactured using paper and polypropylene as dielectric; these capacitors are usually impregnated with oil. Our APFC panels are well designed and also having manual function optionally. Indications for ‘Alert On’ for system failures like fuses blown, banks out of service, contactors welded or open etc.. Alarms for over current, over voltage, over temperature and also regular compensation indicator, low voltage release, low signal release etc. can be incorporated as per actual requirements.
Technical particulars of SHEPEHRD APFC PANEL
Reference standard : ISS 13340: 1993
Insulation Resistance: 50 M W
Manufacturer’s Name: Madhav / Subodhan / Epcos
Rated Frequency : 50 (+ / - 3%) Hz.
Reference Ambient temperature: 50o C (With 5% 5th Harmonic)
No. of phases. : 3
Temperature Rise over Ambient: 50 C Maximum
Connection Symbol: Delta
Rated Voltage: 440 / 415 Volts
Type of dielectric: Metalized PP
Max Continuous Over - Voltage: 10% Continuous. (As per ISS)
Discharge Device / Res. Volt. Resistance value: Resistive. Residual Voltage 50 V
The power factor plays a vital role in entire electrical distribution network. The ratio of productive power (KW) to total power (KVA) is power factor. It is a measure of system electrical efficiency in an A.C. circuit, and is represented as a % or a decimal. A large number of electric machineries and light fittings has inherently low power factor which mean that the supply authorities have to generate much more current then is normally required. In addition transformers and cables also have to carry this extra current. To obtain best possible economic advantage from electric power, both the generation plant and consumer’s plant should be operated at higher efficiency. To achieve this it is essential to have higher power factor (nearing to unity) throughout the system.
