PFC systems are used to discharge unnecessarily overloaded supply systems through inductive reactive power and save consumption costs. JANITZA Power Factor Control Relays detects the reactive and real vectors of current via current and voltage path through single phase electronic measuring system. By means of these values the controller computes the phase divergence between the fundamentals of current and voltage, and compares it to the set phase divergence. In case of a difference, capacitor duty contactors will be switched on or off. Here the reactive power controller distinguishes the switching of capacitors via contactors or semiconductor switches. Janitza relays have the following features
Application
PFC systems are used to discharge unnecessarily overloaded supply systems through inductive reactive power and to save reactive consumption costs. The reactive power controller is the main part of a PFC system and automatically switches capacitors steps on or off. The Prophi® power factor controller is suitable for use in conventional and dynamic PFC systems. A mixed operation (hybrid switching) is possible as well.
Features
- Automatic or manual configuration
- Zero voltage releasing within 15ms
- Choke degree in % for each stage programmable from 0-20%
- Setting of the discharge time for all contactor stages of 0-1200 seconds
- Capacitor power programmable for each stage
- Temperature feeler for ventilator control
- Over temperature disconnection programmable
- Controlling of external semiconductor switches (max. 50 switching per second)
- Current transformer input for ../1A and ../5A
- Password protection
- External switchable target cos phi
Alarm Signals
- Under voltage
- Over voltage
- Underscoring of measuring current
- Exceeding of measuring current
- Insufficient capacitor output
- Supply of real power
- Harmonics thresholds
- Over temperature
Display Parameters
- Voltage
- Current
- Frequency
- Active Power
- Reactive Power
- Apparent Power
- Power Factor
- 3rd, 5th, 7th, 9th, 11th, 13th, 15th, 17th & 19th harmonic & THD percentage of current and voltage
There are four different types of PFC’s. According to the range and feat
Prophi 6r
It has
- Six conventional outputs
- Potential free relay outputs
Features
- Automatic or manual configuration
- Zero voltage releasing within 15ms
- Cyclic switching
- Timer for each stage connection time
- Indirect measurement of stage capacitor current
- Counter for each stage switching
- Setting of disconnection time
- Setting of the discharge time
- Capacitor power programmable for each stage
- Temperature feeler for ventilator control
- Over Temperature disconnection programmable
- Current transformer input for xxx/A and xxxx./5A
- Password protection
- Isolation for defective stages
- Fixed stage selection
- Harmonics thresholds
- LCD display with contrast adjustment
Prophi 12r
It has
- Twelve conventional outputs
- Potential free relay outputs
Features
- Automatic or manual configuration
- Zero voltage releasing within 15ms
- Cyclic Switching
- Timer for each stage connection time
- Indirect measurement of stage capacitor current
- Counter for each stage switching
- Setting of the discharge time
- Capacitor power programmable for each stage
- Temperature disconnection programmable
- Current transformer input for xxxx/5A
- Password protection
- Isolation for defective stages
- Fixed stage selection
- Harmonics thresholds
- LCD displays with contrast adjustment
- Optional Features
- Target power factor changeover
- Modbus RTU/Profibus DP VO Communication
- Slave operation
Application
- Continuous Varying Load
- Harmonics loads
- Central Monitoring System
Prophi 12t
It has
- Twelve semiconductor ouputs
- Very fast switching up to 50 switching /sec
Features
- Automatic or manual configurationProphi 12T
- Zero voltage releasing within 15ms
- Cyclic switching
- Timer for each stage connection time
- Indirect measurement of stage capacitor current
- Counter for each stage switching
- Setting of disconnection time
- Setting of discharge time
- Capacitor power programmable for each stage
- Temperature feeler for ventilator control
- Over temperature disconnection programmable
- Current transformer input for xxxx/1A and xxxx./5A
- Password protection
- Isolation for defective stages
- Fixed stage selection
- Harmonics thresholds
- LCD display with contrast adjustment
Optional Features
- Target power factor changeover
- Modbus RTU/Profibus DP VO Communication
- Slave operation
Application
- Continuous Varying Load
- Harmonics loads
- Central Monitoring System
Prophi 6t
It has
- Six semiconductor outputs
- Very fas switching upto 50 switching/sec
Features
- Automatic or manual configuration Prophi 6T
- Zero voltage releasing within 15ms
- Cyclic Switching
- Timer for each stage connection time
- Indirect measurement of stage capacitor current
- Counter for each stage switching
- Setting of disconnection time
- Setting of the discharge time
- Capacitor power programmable for each stage
- Temperature feeler for ventilator control
- Over temperature disconnection programmable
- Current transformer input for xxxx/1A and xxxx./5A
- Password protection
- Isolation for defective stages
- Fixed stage selection
- Harmonics Thresholds
- LCD display with contrast adjustment application
- Continuous Varying Load
- Harmonics Loads
