Distance Protection Relay
Product Code : LSK-EPS-10533
Distance Protection Relay (SKU LSK-EPS-10533) is an educational-format relay for studying the protection and monitoring of overhead transmission lines, with full-scheme phase and ground distance protection over up to five zones. It works with the Protection Relay Test Set in electrical engineering protection laboratories. Universities, polytechnics, tender contractors and distributors can request it from Science Lab Supplies, which prices and packs each order in Ambala, India.
Specifications
For the five-zone distance relay, the table gives one function or fitting per row. In short, the module comes in a robust carrying enclosure that rests on the test set desk, connects through a multi-core cable and safety leads, and adds directional overcurrent, earth fault and thermal functions to its distance zones.
| Specification | Value |
|---|---|
| SKU | LSK-EPS-10533 |
| Relay type | Distance protection relay, educational format |
| Application | Protection and monitoring of overhead transmission lines |
| Distance protection | Full scheme, phase and ground |
| Zones | Up to five |
| Phase overcurrent | Directional/non-directional |
| Earth fault | Directional/non-directional |
| Negative sequence overcurrent | Directional/non-directional |
| Thermal overload protection | Yes |
| Broken conductor | Yes |
| Blocking | Any one protection element |
| Records | Fault and disturbance records |
| Housing | Robust enclosure with carrying handle |
| Mounting | Desk area of the Protection Relay Test Set |
| Connection | Multi-core cable and safety leads |
| Programming | Keypad and display on the module |
| Software | Supplied with the test set, for use on a suitable computer |
| Simultaneous testing | Test set connections for two relay modules |
| Other use | Optional ancillary for selected power systems products |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Distance Protection Relay
Students can set zone reaches on the relay, apply line faults through the test set and check which zone operates. This turns impedance-based protection, otherwise drawn only as R–X diagrams, into a measured practical for transmission line and power system protection courses.
- B.E./B.Tech power system protection: zone settings and reach.
- Phase and ground faults on a simulated overhead line.
- Directional overcurrent back-up protection, contrasted with radial feeder circuits on the Distribution Trainer.
- Blocking one element and observing its effect on tripping, then relating line switching to the double bus of the Switched Busbar Module.
The fault circuits draw on mains power; make connections with the supply off and keep tests under qualified supervision.
Standard Scope of Supply
The Distance Protection Relay is delivered as a single relay module in its carrying enclosure, ready to set up from the front keypad. The Protection Relay Test Set (with its software) and a computer are separate purchases, and the quotation lists the cables and any optional accessories.
Packing, MOQ and Lead Time
Ask for one relay to extend an existing test set, or quote a full protection bench. Every quotation gives packing, delivery time and price for the quantity named, and other engineering lab equipment in India, such as line simulators, can be priced on the same document.
With an Importer-Exporter Code as a registered exporter, Science Lab Supplies can ship to buyers in Vietnam, Malaysia, Peru, Egypt, Iraq and Nigeria. Mention the zones and line exercises you plan when writing via the contact page, collect items in the enquiry cart, or follow the lab tender page for tender-based supply.
Frequently Asked Questions
How many distance zones can be set?
The relay provides full-scheme phase and ground distance protection with up to five zones, enough to show primary and back-up zone coordination along a line.
Does it offer back-up protection besides the distance zones?
Yes. Directional or non-directional phase overcurrent, earth fault and negative sequence overcurrent sit alongside the distance zones, with thermal overload and broken conductor protection, so back-up schemes can be set on the same module.
Who supplies the Distance Protection Relay?
Science Lab Supplies prepares the quotation and dispatch from Ambala, India. A laboratory can order the relay alone or with the test set and companion relays on a single quotation.
Can two relays run together?
Yes. Most tests need one relay, but the test set has enough connections for two relay modules at the same time, for example to compare zone tripping with an overcurrent relay.
Related Line Protection Equipment
A distance relay is only as instructive as the line and faults it sees. These items supply that context: the test set drives the relay, the simulators model real line lengths, the breaker trainer shows other protection devices, and the companion relays can share the same quotation.
- Protection Relay Test Set — its upper-panel transmission line lets students set up distance protection tests.
- Transmission Line Simulator — six-section three-phase line in per-unit values.
- Electrical Power System Simulator — reactances simulate overhead or underground lines of different lengths.
- Circuit Breaker Trainer — adjustable fault current in four circuits, each with a different protection device.
- Feeder Management Relay — adds under/over voltage, frequency and wattmetric earth fault functions.
- Overcurrent And Earth Fault Relay — first overcurrent stage selectable from any of 12 IDMT curves.
- Differential Protection Relay — numerical relay for transformers, auto transformers and generators.
Browse the full Electrical Power System range, the Electrical and Electronics range, or all engineering laboratory equipment.
Last updated: 22 October 2026
