ZIV GRID AUTOMATION / TRANSMISSION / ZLV Distance Protection

			distance protection

			ZLV

			ZLV relays provide distance protection for power transmission and subtransmission lines. They feature a complete package of functions and protection schemes offering selective, quick and reliable protection both for underground and overhead lines, with or without series compensation.

		Description
Distribution IRV / Protection, Control and Metering IRX / Protection, Control and Metering 6MCV / Control and Metering DRV / Busbar Differential / Feeder Protection Bay Unit IRD / Overcurrent Protection IVD / Overcurrent and Voltage Protection 6MCD / Control and Metering Power Machines IDV / Differential Protection, Control and Metering BCV / Capacitor Bank Protection and Control DCV / Bus Differential Protection Bay/ Capacitor Bank 6RTV / Transformer Voltage Regulator IDN / Differential Protection Relay RTN / Transfomer Voltage Regulator BCD / Capacitor Bank Protection MPI / Multifunction Motor Protection IED Industrial Relays Transmission ZLV / Distance Protection DLX / Line Differential Protection FIT / Breaker Failure Protection SCT / Trip and Close Circuits Monitoring ZLS / Distance Protection DBN / Bus Differential Protection 8PRN / Disturbance Recorder Communications 4CCY: Intelligent Optical Communications Concentrator / Diffuser 4CCN: Communications Concentrator / Diffuser S2F: Serial – O.F. Converter GPS: NTP Clock Systems CPX / Substation Central Unit CPP / Compact Substation Central Unit CPT / Substation Central Unit IEC61850 GIX-GIT / Protection Information Management Systems Software ZIVercomPlus / Communications Program SGR Software / Disturbance Management System SGP Software / Remoted Unified Protection Information Management Systems ZIVercom / Communications Program for Protection and Control Terminals ZIVerlog / Configuration Program for Control and Protection and Control Terminals PCD / System Operation Local HMI ZIVergraph / HMI and Central Unit Editing Software		Functions Additional Functions Models - Distance protection 3PH(4 reversible zones) - Distance protection 1PH/3PH(4 reversible zones) - Distance protection 1PH/3PH(5 reversible zones) - Recloser - Synchronism check - Minimum voltage - Maximum voltage - Maximum ground voltage - Directional phase overcurrent - Phase overcurrent - Directional ground overcurrent - Ground overcurrent - Negative sequence directional overcurrent - Negative sequence overcurrent - Weak Infeed logic - Maximum / minimum frequency - Rate of change - Thermal image element - Power swing blocking - Tripping on loss of stability - Negative sequence overcurrent (desq. I) - Close onto fault detector - Overcurrent supervision for distance detection - Stub bus protection - Teleprotection scheme - Breaker failure - Trip and Close Coil Supervision - Pole discordance detector - Fault locator - Oscillographic recorder - Dead Line detector - Protection schemes: ·Step distance trip. ·Extension zone 1. ·Permissive underreach trip. ·Direct transfer trip. ·Permissive overreach trip. ·Directional comparison unblocking. ·Directional comparison blocking. ·Additional logic: current reversal blocking, load limiters (load encroachment logic). - Power swing and fuse failure detector. - Series compensation line logic. - Breaker (KA2) supervision and excessive number of trips. - Integrated simulator. - Four (4) settings tables. - Time delay elements with curve selection (IEC and ANSI). - Control and monitoring: ·Alphanumeric display. ·Two (2) dedicated Open/Close buttons. ·Six (6) configurable command or control buttons. - Programmable logic. - Communications ports and protocols. - LEDs. - Configurable digital inputs (from 8 to 39). - Configurable digital outputs (from 6 to 36). - Time synchronization (protocol IRIG-B 003 and 123) or via communications. - Event and metering history records. - Oscillographic recording (CONTRADE 99 format). - Power supply voltage monitoring (depending on model). - ZiverComPlus communications software. [A] 21(3F) + 79 + 25 + 3x(3x27) + 3x(3x59) + 2x59N + 3x(3x67-3x50/51) + 3x(67N-50N/51N) + 3x(67Q-50Q/51Q) + 27WI + 3x81M + 3x81m + 3x81D + 49 + 68/78 + 46 + 50SOF + 50Sup + 50STUB + 85 + 50FI + 6x3 + 2 + FL + OSC [B] 21(1F/3F) + 79 + 25 + 3x(3x27) + 3x(3x59) + 2x59N + 3x(3x67-3x50/51) + 3x(67N-50N/51N) + 3x(67Q-50Q/51Q) + 27WI + 3x81M + 3x81m + 3x81D + 49 + 68/78 + 46 + 50SOF + 50Sup + 50STUB + 85 + 50FI(1F/3F) + 6x3 + 2 + FL+ OSC [E] 21(3F) + 79 + 25 + 3x(3x27) + 3x(3x59) + 2x59N + 3x(3x67-3x50/51) + 3x(67N-50N/51N) + 3x(67Q-50Q/51Q) + 49 + 68 + 50SOF + 50Sup + 2 + FL + OSC [F] B + 21-Z5 + DL (Dead-Line) [G] B + 21-Z5 + DL + (25 + 79 + 50BF + 2) and HW for breaker and a half Oscillographic and events capacity extended [H] A + 21-Z5 + DL (Dead-Line)