SEL-4000 / SEL-T4287 — test systems for protection relays
SEL-4000 and SEL-T4287 are used to test protection terminals. The SEL-4000 verifies settings through low-level inputs and supplies 3U+3I at each line end, while the SEL-T4287 checks fault locators and protection functions that operate on traveling waves.
- SEL-4000
- 3U+3I source at each line end, testing of two terminals
- SEL-T4287
- pulse injection to test protection and traveling-wave fault location
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The SEL-4000 is designed for testing two terminals, for example a line differential protection set at both ends of a line. The SEL-T4287 applies pulse injection, followed by tests of protection and traveling-wave fault location. The equipment is used during commissioning and periodic protection tests at substations.
Technical specifications
| SEL-4000 | 3U+3I source at each line end, testing of two terminals |
|---|---|
| SEL-T4287 | pulse injection to test protection and traveling-wave fault location |
Request a price and lead time
SEL-4000 / SEL-T4287 — test systems for protection relays. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 9030 89 00 00 |
|---|---|
| HS, 6 digits | 9030 89 |
| CN (EU) | 9030 89 00 |
| HTSUS (USA) | 9030 89 01 00 |
| China customs tariff | 9030 89 90 90 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
What does the SEL-4000 supply during tests?
A 3U+3I source at each line end, through low-level terminal inputs.
Can both ends of a line be tested at once?
Yes, the SEL-4000 is designed for testing two terminals.
How are traveling-wave protections tested?
With the SEL-T4287, which uses pulse injection to test protection and fault location.
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