Hilkar
Hilkar, combines extensive research and development with high quality systems in both manufacturing and design processes. In addition to this, an extensive sales organization and experienced customer response have founded. Today, dedicated to serving our customers in Turkey and abroad, Hilkar is one of the main power resistors, reactors, special transformers and motor control and testing systems supplier in the world.
- +90 264 275 5540
- +90 264 275 1276
- hilkar@hilkar.com
- Organize Sanayi Bolgesi 10.Cad. No:9
Arifiye/Sakarya, 54580
Turkiye
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Reduced Voltage Motor Starting Panels by Reactors
A method to limit motor starting current is a series reactor. Iron core or air core reactors can be used for starting purposes. If an air core is used for the series reactor then a very efficient and reliable soft starter can be designed which is more suitable for high MW ratings of synchronous/induction motors at MV levels. The reactors are designed with taps.
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Harmonic Filter Resistors
The widespread use of nonlinear loads such as power electronics based equipment and electric arc & ladle melt furnaces all around the world hinder the quality of electric power. One of the most important parameters for defining the power quality is harmonic distortion.
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LCL Filters
LCL Type Harmonic Filter Modules are used to filter out the input current harmonics of the Motor Drives having six-pulse diode/thyristor rectifiers, where harmonic current distortion exceeds the limits defined in standards.
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Reduced Voltage Motor Starting Panels by Auto-Transformers
Reduced Voltage Motor Starting Panels are designed for starting of squirrel cage induction and synchronous motors. A RVMS Panel reduces the torque by temporarily reducing the voltage and/or current input. It reduces voltage applied to the motor during start up causing lower starting currents from the connected grid.
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Sensing Resistors
Resistive Voltage Dividers
NGR Sensing Resistors are attached in parallel to the neutral grounding resistor. The sensing resistor allows a protective relay to detect a resistor failure in a continuous manner. Sensing Resistors are used in combination with neutral grounding resistor monitor relays. The relay measures neutral grounding resistance, neutral grounding resistor current and neutral to ground voltage. The relay continuously measures neutral grounding resistor ohmic value in an unfaulted system and it trips on if neutral grounding resistance varies from its calibrated value.
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LV Iron Core Shunt Reactors
Iron core Shunt Reactors act as an absorber of reactive power to increase energy efficiency of the power system. Shunt Reactors are used in order to compensate capacitive reactive power generated by long and lightly loaded transmission lines as well as underground cables, thus allowing the flow of more active power through the system and avoiding over voltages. Shunt Reactors can be directly connected to the power line or to a tertiary winding of a three-winding power or distribution transformer.
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Air Core Neutral Grounding Reactors
Neutral Earthing (Grounding) Reactors, which resist current flow through inductive elements, are single phase reactors generally connected between ground and neutral of transformers or generators in order to control single line-to-ground faults at a desired level.
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Air Core Harmonic Filter Reactors
Use of nonlinear loads such as power electronics based equipment and electric furnaces have been on the rise for the last decades. Such loads decrease the power quality of the network that they are connected to. One of the most important parameters for defining the power quality is harmonic distortion.
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Iron Core Current Limiting Reactors
Current Limiting Reactor (CLR) is one of the most effective short circuit current limiting devices. It reduces stresses on busses, insulators, circuit breakers and other high voltage devices. Use of CLR is the most practical and economical approach at current limiting.
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Dynamic Braking Resistors
Speed of three phase asynchronous squirrel-cage motors and three phase synchronous motors are generally controlled by motor drives where frequency of the drive output determines the motor speed, and it can be adjusted without dependence on the voltage magnitude.
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LV Iron Core Motor Starting Reactors
Motor starting reactors are used to reduce voltage during starting of large 3 phase motors while limiting inrush currents.
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Generator Neutral Grounding & Leads Cubicles
Generator Neutral Grounding Cubicles are designed to minimize fault damage incurred by generators, maintain sufficient fault detection and improve power system reliability. Generator Neutral Grounding and Lead Cubicles are manufactured as for IEEE or IEC standards.
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Motor Starting Auto-Transformers
Motor Starting Auto-Transformers reduce the inrush current by stepping down the applied voltage during the start-up operation of induction and synchronous motors.
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High Current Transformers
High Current Transformer is designed to elevate and check the temperature of the conductors at high current levels, in order to simulate the current loading conditions found in electrical circuits. High Current Transformer is designed as an open type transformer that uses the test object as its secondary coil or has 1 or 2-turn self secondary winding. The conductors cores' temperature depends on the short-circuit high current caused by the test object. According to the current going through the test object, the test temperature of the conductor will change. The loop temperature is measured by a thermocouple probe which is directly connected to conductor.
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Anti-Islanding Load Banks
AI-Series
AI-series anti-islanding load banks containing purely resistive, inductive, or capacitive load, have segmented combination control of power input, and can simulate a variety kinds of power loads to meet the grid-connected inverter full load test requirements.
