Under Voltage & Over Voltage Relay Testing System Manufacturer,Supplier and Exporter in India
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Product Code : SCL-EELE-12978
Indian Lab Suppliers supplies the Under Voltage & Over Voltage Relay Testing System (Product ID: 12978) as part of its electronics engineering lab equipment range. It is a test panel for setting and checking electromechanical under-voltage and over-voltage relays.
Quick Answer
Both relays have a normal voltage of 110 V AC. The over-voltage relay can be set at 121, 126.5, 132, 137.5, 143, 148.5 or 154 V (110% to 140% of normal) and has 2 N/O and 1 N/C contacts; the under-voltage relay can be set at 44, 51.3, 58.6, 65.9, 73.2, 80.5 or 88 V (40% to 80%) and has 1 N/O and 2 N/C contacts. An isolated single-phase variac (0–270 V, 0–5 A) raises or lowers the test voltage, and the pick-up and drop-off voltages are read on a 16 × 2 LCD. A mimic of a transmission line shows where each relay is connected.
Key Specifications
| Parameter | Detail |
|---|---|
| Mains supply | 230 V ±10%, 50 Hz |
| Variac | Isolated; input 230 V; output 0–270 V; 0–5 A |
| Over-voltage relay | 110 V AC nominal; settings 121–154 V in 7 steps; 2 N/O, 1 N/C |
| Under-voltage relay | 110 V AC nominal; settings 44–88 V in 7 steps; 1 N/O, 2 N/C |
| Relay type | Electromechanical |
| Display | 16 × 2 LCD |
| Dimensions / weight | W 830 × D 350 × H 645 mm; about 48 kg |
| Included | Learning material CD; 2-year warranty |
Where This Is Used
Used in protection laboratories to show how motors and distribution equipment are disconnected on sustained voltage sags or surges. The variac output can reach 270 V, so connect with the supply off and keep the panel earthed. Related: Over Under Voltage Protection Relay Kit (Product ID: 12994) and Under And Over Voltage Relay Setup (Product ID: 10407). Browse the full Electronics Engineering Lab Equipment range or related Electricity and Magnetism products.
Frequently Asked Questions
What is the over-voltage setting range?
121 V to 154 V in seven steps.
What is the under-voltage setting range?
44 V to 88 V in seven steps.
Is the test supply isolated?
Yes, the single-phase variac is isolated.
Related Categories
Electronics Engineering Lab Equipment · Electricity and Magnetism · Engineering Lab Equipment
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For pricing, bulk quantities or tender documentation on the Under Voltage & Over Voltage Relay Testing System, reach our team via Contact Us or submit your requirement through our Tenders page.
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