IDMT Over Current Relay Kit Manufacturer,Supplier and Exporter in India
Product Code : SCL-EELE-12995
Indian Lab Suppliers supplies the IDMT Over Current Relay Kit (Product ID: 12995) as part of its electronics engineering lab equipment range. It is a rack-mounted kit for plotting the IDMT and definite-time characteristics of a three-phase numerical overcurrent relay.
Quick Answer
The relay is a three-phase numerical IDMT overcurrent unit with a user-selectable 1 A or 5 A rating, 2 NO and 2 NC contacts and a wide auxiliary supply (85–275 V AC/DC or 21–130 V DC). A voltage/current injector (0–270 V, 3 A) and switchable lamp and resistor loads set the test current, and an over-current and elapsed-time panel with a 20 A ammeter times the trip up to 999 s at 1 ms resolution. A DOL starter panel (4-pole 4 A MCB, 9 A contactor) and a bidirectional three-phase multifunction meter complete the set. Two experiments are listed: the IDMT curve and the definite-time characteristic.
Key Specifications
| Parameter | Detail |
|---|---|
| Relay | 3-phase numerical IDMT overcurrent, 1 A / 5 A selectable, 2 NO + 2 NC, 50/60 Hz |
| Relay auxiliary supply | 85–275 V AC/DC or 21–130 V DC |
| Injector panel | Input 230 V AC 50 Hz; output 0–270 V, 3 A |
| Timer panel | AC ammeter 20 A; elapsed-time counter up to 999 s, 1 ms resolution |
| DOL starter panel | 4-pole MCB 415 V / 4 A; 9 A contactor, 230 V 11 VA coil; R-Y-B indicators |
| Multifunction meter | 3-phase 3/4 wire, 415 V, CT 5 A; V, A, Hz, PF, kVA, kW, kWh; Modbus RS485 optional |
| Loads | Lamps 15/40/60/100/200 W (3 sets); resistors 100–750 Ω in 8 steps, 400 W |
| Frame | 40 × 40 mm aluminium profile rack, table-top panel |
| Optional | Three-phase variac 415 V / 470 V 3 A; working table, tachometer, multimeter, tool kit, demo CD |
Where This Is Used
Used in protection laboratories for relay characteristic and grading exercises. The DOL panel and loads carry mains voltage and the lamps and resistors get hot, so connect with the supply off. Related: Over Current Relay Testing System (Product ID: 12977) and Three Phase Over Current & Earth Fault Numeric Relay Testing System (Product ID: 12985). Browse the full Electronics Engineering Lab Equipment range or related Electricity and Magnetism products.
Frequently Asked Questions
Which characteristics are plotted?
The IDMT curve and the definite-time characteristic.
What relay rating is used?
1 A or 5 A, user selectable.
How is trip time measured?
With an elapsed-time counter of 1 ms resolution.
Related Categories
Electronics Engineering Lab Equipment · Electricity and Magnetism · Engineering Lab Equipment
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