Protection Relay

DC Ground Processing System (DGPS-C30, C60)

This detection device constantly monitors leakage current value through the control DC power supply line (P phase/N phase) through the communication type current transformer (DCT), and serves as detection device with alarm output and fault history storage for each channel in case of DC leakage.

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Capacitor Protection Relay (YSCR-3150)

A relay used to measure and protect capacitance by measuring harmonic wave, and the energized status of capacitors in low-voltage and high-voltage distribution panels.

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UFR Digital Trip Control Device (YSUF-3300M)

It is a device that secures the necessary power by shutting down the general load D/L when low-frequency occurs due to system accident, and is also a control device that receives a signal from a low-frequency relay and can selectively block a number of D/Ls by frequency range.

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Automatic Voltage Regulator (YVC-03)

It is Automatic voltage regulator for driving OLTC (On Load Tap Changer). It maintains proper voltage using LDC (Line Drop Compensator) and Z-compensation function considering load characteristics. Tap adjustment device with built-in DVM (Digital Voltmeter) function allows effective voltage control upon sudden load change.

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Automatic Voltage Regulator for parallel operation (YVC-03P)

It is Automatic voltage regulator for driving OLTC (On Load Tap Changer). It maintains proper voltage using LDC (Line Drop Compensator) and Z-compensation function considering load characteristics. The OLTC can operate between up to eight transformers in parallel without additional equipment.

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Smart Automatic Voltage Regulator for Parallel Operation (YSVC-2110A)

It is Automatic voltage regulator for OLTC (On Load Tap Changer,) drive, which allows voltage control according to load characteristics. Up to 8 transformers can be operated in parallel without additional equipment. With IEC 61850 communication function, it is suitable for digital substation.

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Delay Time Control Relay (DTCR-A2)

The digital-type current auxiliary relay detects the instantaneous AC/DC current in the breaker trip coil during mechanical lockout and protection relay operation, to protect the power system, and accurately deliver operational details.

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Tap Position Indicator (YSTPI-9240A~K)

The indicator shows the tap position of the OLTC (On Load Tap Changer) of the main transformer as BCD (Binary Code, and Potentiometer value in MDU (Motor Drive Unit) The output is transmitted to the SCADA system in the central control room via the remote control unit or remote terminal unit.

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RS-485 Mosaic Indicator (RS-485)

A communication-type meter that can be mounted on the Mosaic panel. It receives RS-485 communication data and displays it in 4 digits and displays 3-phase circular and tidal current.

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Communication Module (YANS-COM2)

The product is composed of touch screen/alarm device modules (Watchdog, Converter)/ communication module (Converter, Output, and Repeater) and processes up to 256 signals and transmits field information to the worker through bell, buzzer and collective LED window.

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