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RELAY

Alstom LFDC1015ADD01ED Digital Directional Comparison Protection Relay for EHV/UHV Transmission Lines

Name: Alstom LFDC1015ADD01ED Digital Directional Comparison Protection Relay for EHV/UHV Transmission Lines
Brand: OTHER BRAND
SKU: 750
Price: 85000.00 INR
Availability: InStock

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₹ 85,000.00 ₹ 106,250.00 -20%

USED

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Parameter	Details
Brand:-	Alstom
Model:-	LFDC1015ADD01ED
Relay Type:-	Digital Directional Comparison Protection Relay
Protection Functions:-	Directional Overcurrent (DOC), Directional Earth Fault (DEF)
Scheme Type:-	Pilot Wire / Carrier Aided Comparison
Input Signals:-	CT & VT Operated
Application:-	Transmission Line / Feeder Line Protection
Mounting Type:-	Panel Mount
Indication:-	LED Status Indicators
Communication:-	Pilot Channel Interface
Trip Logic:-	High-Speed Comparison Tripping
Auxiliary Supply:-	110V / 220V AC/DC (model dependent)
Operating Frequency:-	50 / 60 Hz
Output Contacts:-	Trip / Alarm / Auxiliary
Usage:-	Utility Substations, Power Plants, Industrial Panels

Country of origin:-	Made in UK
Condition:-	Used Excellent Working (As per photos)
Shipping	Fast & Safe Worldwide shipping available.

Brand	OTHER BRAND
Category	RELAY

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Digital Directional Comparison Line Protection Relay
Model: LFDC1015ADD01ED
High-speed fault detection for transmission & sub-transmission lines
Supports pilot wire / carrier aided tripping schemes
Directional overcurrent & earth fault discrimination
Numerical relay with LED status indications
Panel mount industrial design for control & relay panels
Reliable operation in utility substations & switchyards
Suitable for long feeder and tie-line protection
CT & VT operated inputs for accurate fault sensing
Designed for distance / line differential style comparison logic

The Alstom LFDC1015ADD01ED Digital Directional Comparison Protection Relay is an advanced numerical protection device engineered for high-speed transmission and feeder line protection. Built for directional comparison schemes, this relay uses communication between line ends via pilot wire or carrier channels to ensure instantaneous fault clearance and superior selectivity.

Widely used in utility substations, power plants, and industrial switchyards, the LFDC101 series provides precise directional overcurrent and earth fault protection, enabling reliable isolation of faulty sections without affecting healthy feeders. Its digital processing ensures stable operation under system disturbances, CT saturation, and transient conditions.

The relay is ideal for long transmission lines, tie feeders, and inter-substation links where fast and selective protection is mandatory.