Functional Description

LineTroll3100T Fault Indicator indicates earth-

and shortcircuit-faults by detection of changes in the magnetic field set up by the fault current. The indicator can detect and independently indicate both permanent and transient faults. A cluster of red LEDs for permanent fault and one green LED for transient fault. One LED will give indication on low battery status. High visibility, Features LineTroll

3100T

Programmable operating parameters High visibility ( > 10 lumens) Usable on all Medium Voltage distribution/

sub transmission networks 66-138kV. Dual indications (permanent and transient

faults) Display unit can rotate for maximum visibil-

ity. Built in log and fault counter. Resistant to tough weather conditions Communication modules available. Battery capacity monitoring.

Line Troll 3100T

Fault Passage Indicator for overhead lines (66-138kV)

LineTroll3100T continuously monitors the line voltage and current, the sources of informa-

tion it needs to operate. The unit is fully self-contained, no external transformers or connec-tions is required. During normal line conditions, LineTroll

3100T remains extinguished.

The indicator is looking for a specific sequence of line conditions to happen before it starts. A. The line should be energised (voltage present) for a minimum of 5 seconds. B. Di/Dt: The line current should increase rapidly by the amount of a user set trip level The

line should be de-energised, (Circuit-breaker trip, voltage not present). The user may program the criteria for operation to suit his local requirement by manipulating a bank of micro-switches inside the indicator. LineTroll

3100T can be equipped with a relay card, short-range radio or GSM communica-

tion module for remote indication. Interconnection with Nortrolls MicroSCADA Hardware relay interface / software protocols, IEC-870 and RP-570 available for integration to third-party systems.

DS LT 3100T 2009

Technical Specifications

Ordering Information

About Nortroll AS Your Representative

Application: Short circuit and Earth fault indication on HV distr. & transmission single circuit lines System Voltage: 66 - 138kV (> 138kV; contact Nortroll!) Grounding system: Isolated, resistor and solidly grounded. Impedance grounded networks with restrictions. Frequency: 50Hz & 60 Hz Fault-detection levels: Short Circuit (PtP) Di/dt: 100% or 200% Earth Fault (PtG) 150, 240, 300 or 390A (see UG for ref.pole) Duration (min): 60 ms or 120 ms Inrush-blocking: 5 sec Reset: Automatic: Re-energized line (Voltage), Timer: 1.5, 3, 6, or 12 hours Manual: By rotating display unit to reset position. Remote: From SCADA RTU Note: All trip-levels, timers etc. are selectable and programmable by micro switches. Indication: 1 Green LED for transient fault 4 Red LEDs for permanent fault Low battery indication LED Intensity: > 10 lumens Log, fault counter Built in log and fault counter with rel. time tagging Power supply: 2 pcs Lithium Cell (D size 16,5 Ah) External DC 10-24VDC (with relay card) Battery life time: >3000 hours flashing (8 years of operation). Mounting: 9 to 15 meters below the conductor Temp: -40 to +70 deg Housing: Polycarbonate, UV stabilized Dimension: 100 x 380x200mm Weight: 1200g (including box and 2 pcs battery) Degree of protection: IP55 (cat 2) IK09 & V-0 UL

Since the foundation in 1976, Nortroll AS has devoted its activities to the development of equipment aiming to reduce electric utilities outage times. We offers a wide range of prod-ucts for fault detection and remote operation in the MV Distribution Network.

Product no: 3111 LineTroll3100T (2 Lithium batteries included)

Product no: 3121 LineTroll3100T w. relay card ext. DC

Product no: 3131 LineTroll3100T w. QL. Mess (Short Range Radio) batteries included

Product no: 3141 LineTroll3100T w. GLM (GSM-modem) batteries included

Product no: 3150 Relay card (for upgrade) Product no: 1056 KBB-11 Lithium med.rate cell; Battery for Indicator Product no: 1301 KBB-20 Lithium high rate cell. Battery for GSM-modem

DS LT 3100T 2009