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
Turkey
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Neutral Grounding Resistors
NGR
Neutral Grounding Resistors (NGRs) are used to limit the fault current for safety of equipment and personnel in industrial systems.
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PLC Line Traps
Line Traps are used in transmission and distribution networks and they are the key components in Power Line Carrier (PLC) systems used for remote control signals, voice communication, remote metering and control between substations in the electrical T&D networks.
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Resistive Load Banks
R Series
Load banks are devices which contain resistive, inductive and/or capacitive loads, apply the load to an electrical power source and dissipate the power of the electrical source. Portable and stationary resistive load banks incorporate as low as 1 kW load step increments for testing small to large generating sets. The fine control resolution ensures accurate load control and power factor targeting adjustments.
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Air Core Smoothing Reactors
Smoothing Reactors are serially connected reactors inserted in DC systems to reduce harmonic currents and transient over currents and/or current ripples in DC systems.
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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 Test Lab Reactors
Test Laboratory Reactors are designed for high voltage and high power test laboratories. They are designed to withstand the most extreme electrical service conditions during test periods. Design techniques are implemented in accordance with the most demanding service conditions. These reactors are used for various purposes in test laboratories such as current limiting and synthetic testing of circuit breakers, capacitor testing, artificial line simulation etc.
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Anti-Condensation Heaters
Anti-Condensation Space Heaters are designed to maintain the temperature of an electrical enclosure. Anti-Condensation Heaters are used for elimination of water vapor contained inside the enclosures. They also provide frost protection by keeping the internal temperature of electrical enclosure above the freezing temperature. The Anti-Condensation Space (Panel) Heaters prevent condensation through convection.
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Air Core Shunt Reactors
Shunt Reactors act as absorbers of reactive power to increase energy efficiency of the power system. Shunt Reactors are inductors that 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. The shunt reactors provide inductive compensation.
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LV Iron Core Smoothing Reactors
Smoothing Reactors are serially connected reactors inserted in DC systems to reduce harmonic currents and transient over currents and/or current ripples in DC systems. They are necessary in order to smooth the direct current wave shape to reduce losses and improve system performance.
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LV Iron Core Line & Load Reactors
Line and load reactors are generally serial-connected to the input and/or output terminals of three phase equipment such as motor speed controllers, inverters and UPS systems. These equipment make use of semiconductor switches such as IGBTs, thyristors, and diodes and therefore create harmonic distortion and high switching over-voltages (dv/dt). Use of such equipment has been becoming more widespread as the technology advances. However, the negative effects of these equipment should not be overlooked.
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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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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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High Resistance Neutral Grounding Devices
HRG systems limit the fault current by placing high resistance between neutral point of transformer (or generator) and ground. As it is not possible to locate the fault point in delta connected systems, an artificial neutral point is created and delta connected system can be grounded. This allows a fault current of a few amperes thus locating the fault point gets easy. When the neutral point is grounded thru high resistance, both continuity of operation is provided during fault condition and sufficient current (typically between 2 A and 10 A) flow is provided for ease of locating the fault point.
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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.
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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.
