LLI-3000DC Live Line Indicator
Battery-powered live line indicator kit from T&R Test Equipment for confirming that 3000 V DC metro and tram overhead lines or third rail are dead before earthing.
The LLI-3000DC is a battery-operated live line indicator from T&R Test Equipment for DC systems up to 3000 V, aimed at metro and tram networks. It is mainly used on overhead catenary but also works on third rail installations. Its job is to prove that a section has been de-energized so it can be earthed safely before maintenance or installation work begins.
The indicator alarms when the line exceeds a threshold of about 33% of system voltage, which is 1000 V DC on this model. Pressing the test button triggers the alarms and checks the battery; on release the red LEDs switch to green for about 5 minutes, during which the unit is applied to the conductor. A live reading brings back flashing red LEDs and a 70 dB buzzer. The resistor chain is 6 MΩ.
Availability
Backordered — sourced independently
Not on our shelf today. Z Power Electric sources this part through independent, surplus, and new-old-stock channels rather than waiting on the factory queue, and confirms price and lead time within 24 hours.
Catalog pricing
Request pricing and availability for this item. Z Power Electric can confirm lead time, sourcing options, and part details.
- 30-day returnsOn standard orders
- 24-hour quoteFrom our sourcing team
Quick facts
- Brand
- T&R Test Equipment
- Part number
- LLI-3000DC
- Category
- Safety & Test Equipment
Also searched as
LLI3000DC · LLI 3000DC
Downloadables
Product overview
The kit includes the indicator with earth lead and clamp on a long handle, a Bowthorpe rod adaptor, a universal star-wheel adaptor for other operating poles, hook, Y and straight electrodes, a polymer cleaning kit, a manual and a carry satchel. Alternative clamps are available for other earthing arrangements such as buried rail. T&R makes the LLI in 750 V, 1500 V and 3000 V DC versions; choose the one that matches the system voltage.
Specifications
- Part Number
- LLI-3000DC
- System voltage
- Up to 3000 V DC
- Threshold
- 1000 V DC (about 33% of system voltage)
- Resistor chain
- 6 MΩ
- Alarms
- Flashing red LEDs; 70 dB buzzer, 3.1 kHz modulated at 2 Hz
- Armed period
- About 5 minutes after test button release
- Operating temperature
- -5 °C to +50 °C
Questions about this part
Where can I buy the T&R Test Equipment LLI-3000DC?
Not on our shelf today. Z Power Electric sources this part through independent, surplus, and new-old-stock channels rather than waiting on the factory queue, and confirms price and lead time within 24 hours. Z Power Electric is an independent MRO supplier in Calimesa, California — we buy outside authorized distribution, which is why we can quote parts that a standard distributor shows as unavailable.
Is the T&R Test Equipment LLI-3000DC discontinued or obsolete?
Manufacturer lifecycle status changes by part number and region, so we confirm it per quote rather than publishing a claim that may be out of date. Either way it does not change what we do: we source discontinued, obsolete, and backordered parts as a matter of course, and the quote states whether we located the original or are proposing an equivalent.
How long does it take to get a quote on the T&R Test Equipment LLI-3000DC?
We respond to every sourcing request within 24 hours, and the quote states a confirmed ship date rather than an estimate. Mark the request urgent if the part is holding up a line.
Is Z Power Electric an authorized T&R Test Equipment distributor?
No — and that is the point. Z Power Electric is an independent supplier, so we are not limited to T&R Test Equipment's authorized channel or its order book. We source through surplus, new-old-stock, and independent inventory, and we state the condition and source channel of every unit on the quote.
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