Janitza electrical power factor Regulator Prophi-series

The regulator of electrical power factor Prophi has the optimized control method. The exercised control of standard algorithms reduces quantity of cycles of switching, and also operating time of each step of condenser installation.

• The purpose consists in reaching identical quantity of cycles of inclusions and, at an opportunity, identical operating time of each step of the KRM system.
• Life expectancy of all system can be increased considerably by means of use automatically of the KRM regulated installation. It means that the invested capital earns money longer and that it is possible to avoid new investments.
• Hybrid switching (i.e. a combination of condenser contactors and dynamic thyristor modules for fast contactless switching of condensers) combines advantages of fast switching without perturbation of the electric network with advantages of cost of the KRM normal devices.

Principle of functioning

The single-phase electronic system of measurement collects the relations of reactive and active value of currents of the electric network through strain measurement and current. Using current from one phase and tension from two other phases, the regulator of reactive power calculates necessary reactive power, for achievement of a preset value of electrical power factor.

Steps of condensers join or switched off if there are deviations from the set electrical power factor, and the regulator of reactive power defines between switchings of condensers through condenser contactors or thyristors.

• Category of overvoltage: CATIII
• Extent of pollution: 2
• Working temperature: -10 °C. +55 °C
• Storage temperature: -20 °C. +60 °C
• Installation position: any
• Protection class: 1= device with protection of wires
• The measured and power voltage of Uh: (see versions
• Power consumption: max. 7BA
• Frequency: 45 Of Hz. 65 Of Hz
• Measurement of current: ./5A (1A)
• Power consumption: ca. 0.2 VA
• Minimum working current: 10 mA
• Updating of the display: 1 time per second
• Change of a rate (option)
• The consumed current:: ca. 2.5 mA. 10 mA
• Semiconductor exits (option)
• Relay exits
• Switching tension: max. 250 VAC
• The switched power: max. 1000 W

Management by means of condenser contactors is optimized; it means that the controller of reactive power reaches the set cos(phi) with the minimum quantity of switchings. Transistor exits are used for almost instant management of semiconductor contactors for compensation of different capacities.

Management of ventilation The simple ventilation system can be customized by means of the temperature sensor which is built in Prophi® and the fan. For control of the fan a relay exit or a signal exit is used. For this application can be set the upper/lower temperature limit. Shutdown when exceeding a temperature threshold

The connected steps of condensers can be disconnected with function of shutdown when exceeding temperature to reduce temperature of a distribution frame and to protect condensers. Thresholds of temperature and time of a pause are established upper/lower.

Specific Features

 Automatic configuration

 The display U, I, f, Q, P, S, cos-phi, all odd harmonics of current and tension, with 1 on 19yu

 Display of indirectly measured currents of condensers

 Display of number of inclusions of each step

 Operating time at power off - 15 ms

 Inductance degree in % is programmed for each step from 0-20%

 Installation of a delay of inclusion for all levels of protection against 0-1200 seconds

 Power of the condenser can be set manually

 The temperature sensor for control of the fan

 Possibility of installation of a limit temperature threshold for shutdown

 Control of external semiconductors (max. 50 switchings per second)

 An input for the current transformer. / 1A and... 5/A

 Automatic or manual configuration

 Password protection

 External switching of the set cos-phi

 A signal exit is programmed for

 Voltage drop determination

 Overvoltage determination

 Undercompensation

 Exceeding of currents of measurement

 Limits of values of harmonics

 Generation of active energy

 Exceeding of temperature