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Megger NTS300a Network Relay Tester
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In stock
Product Details
Brand:
Megger
Current Range:
00.000 to 1.999/19.99/25 A
Timer range:
6-digit display with 0.375 in. (10 mm) numerals
Current outputs:
0 to 25 A (trip current)
Voltage outputs,:
0 to 15 V (closing voltage), 0 to 480 V (supply voltage)
Dimentions:
20 H x 21 W x 16.5 D in., (508 H x 533 W x 419 D mm)
Weight:
Control Section: 114.5 lb (51.5 kg) approx, Meter Section: 100.5 lb (45.2 kg) approx
Megger Nts300a
The Megger NTS300A Network Relay Tester is a specialized instrument for testing and maintaining network protectors, particularly those made by General Electric and Westinghouse. This portable, robust test set is essential for electrical professionals, ensuring the reliability and performance of network protection devices.
The NTS300A features a compact, two-piece design that enhances portability, making it easy to transport and lower into manholes for testing. It delivers up to 25 Amps, ideal for high instantaneous tests and verifying trip characteristics, ensuring correct operation under load.
It offers versatile testing capabilities, including overall close tests, overall trip tests, and mechanism tests, handling both electromechanical and solid-state relays. Multiple phase angle settings (0°, 10°, 60°, 120°, 180°, and 240°) allow precise relay testing that requires specific phasing characteristics.
The tester incorporates autoranging, solid-state digital meters for accurate readings of trip currents, closing voltages, and supply voltages, eliminating errors common in analog scales. The built-in solid-state digital timer ensures accurate timing tests on relays with time-delay modules.
A phase sequence indicator verifies proper source voltage rotation and identifies blown fuses, ensuring safe and effective testing. The unit also includes a 50 ft (15 m) multiconductor test cable, allowing for testing from outside the vault, with coded alligator clips for quick, easy connections.
The NTS300A is designed for testing network protectors, particularly 216 and 480-volt models, making it ideal for operational testing, troubleshooting, maintenance, and commissioning in electrical distribution systems.
This tester is an indispensable tool for maintaining the integrity of network protection systems. Its high current output, versatile testing capabilities, and user-friendly design ensure the performance and safety of electrical installations, enhancing the reliability of network protectors.
Megger Nts300a Specifications
| Input Voltage (switch-selected) | 216 or 480 V, 3ø, 50/60 Hz |
| Outputs | 0 to 25 A (trip current) |
| 0 to 15 V (closing voltage) | |
| 0 to 480 V (supply voltage) | |
| Phasing (switch-selected) | 0, 10, 60, 120, 180, 240° |
| Voltmeter | 0.000 to 1.999/19.99/199.9/600 V |
| Ammeter | 00.000 to 1.999/19.99/25 A |
| Digital Timer | 6-digit display with 0.375 in. (10 mm) numerals |
| Ranges (switch-selected) | 0 to 99.9999 s, 0 to 9999.99 s, 0 to 99999.9 cycles |
| Dimensions (each section) | 20 H x 21 W x 16.5 D in. (508 H x 533 W x 419 D mm) |
| Weight | Control Section: 114.5 lb (51.5 kg) approx |
| Meter Section: 100.5 lb (45.2 kg) approx |
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Megger NTS300a Network Relay Tester
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