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In the realm of electrical power systems, the ATO Relay Tester stands out as a crucial tool for ensuring the reliability and safety of relay protection devices.
Current and Voltage Capabilities
The ATO Relay Tester is designed to provide precise and versatile current and voltage outputs, making it suitable for a wide range of testing scenarios. For AC current output, the tester can deliver a phase current of up to 40A (effective value) with an output precision of 0.2 degree. When it comes to three-phase parallel current output, the tester can handle up to 120A (effective value), with a maximum output power of 900VA. This capability ensures that the tester can simulate various current conditions, from normal operating levels to fault scenarios, with high accuracy.
In terms of voltage, the ATO Relay Tester offers equally impressive specifications. The phase voltage output (effective value) ranges from 0 to 120V, with a precision of 0.2 degree. The line voltage output can reach up to 240V (effective value), providing ample range for testing different voltage levels in power systems. The tester also supports a wide frequency range of 0 to 1000Hz for both current and voltage outputs, allowing for comprehensive testing of various protective relays under different frequency conditions.
Usage and Applications
The ATO Relay Tester is a versatile tool that can be used in a variety of applications within the electrical power industry. It is capable of testing single-phase, three-phase, and six-phase protection relay systems, making it a valuable asset for both small-scale and large-scale power systems. The tester can simulate a wide range of complex transient, permanent, and conversion faults, enabling comprehensive testing of relay protection devices.
One of the key features of the ATO Relay Tester is its ability to support both stand-alone operation and connection to a laptop. This flexibility allows users to choose the most convenient mode of operation based on their specific needs. The tester is equipped with a high-quality Windows system and a large screen display, making it user-friendly and easy to operate. Its ultra-light and small structure ensures portability, allowing technicians to carry it to different testing sites with ease.
The ATO Relay Tester is also designed with safety and reliability in mind. It includes overheat, overflow, overvoltage, and short circuit protections to safeguard both the tester and the devices under test. Additionally, the tester features a software time termination system that automatically limits output power and shuts down the power amplifier circuit under high current conditions to prevent overheating.
How to Use the ATO Relay Tester
The ATO Relay Tester is a sophisticated tool designed for testing and calibrating various types of relays in electrical systems. Here’s a concise guide on how to use it effectively:
Pre-Operation Instructions
- Power Supply: Connect the tester to an AC220V outlet. If using an external computer, ensure the serial communication line is properly connected.
- External Devices: Connect any external keyboard or mouse before turning on the power supply.
- Safety: Avoid frequent on/off cycles of the power supply to prevent damage to the system.
Turning On the Tester
1. Plug in the power line and turn on the tester.
2. Wait for the ‘Relaystar’ software interface to appear.
3. Use the tracking ball or external mouse to navigate and select the desired testing module.
Operating the Interface
Tracking Ball Mouse: Move the cursor using the tracking ball. The left and right keys below the tracking ball function as the mouse buttons.
Keyboard: Use the optimized keyboard on the faceplate for data entry and navigation. The ESC key stops tests or cancels selections, while the RUN key starts tests.
Testing Modules
The software includes various testing modules such as:
AC Test: For testing AC current and voltage outputs.
DC Test: For testing DC current and voltage outputs.
Harmonic Superposition Test: To test harmonic components.
State Series I & II: For state series testing.
Saving and Reporting
Saving Parameters: Use the shortcut key Ctrl+S to save testing parameters. These can be recalled later using the ‘Opening Parameters’ option.
Turning Off the Tester
Shutting Down: Do not directly switch off the power supply. First, terminate the Windows operating system. Then, press the power supply button when the safe shutdown prompt appears.
Alternative Method: Use the ‘start’ menu of the operating system to shut down.
The ATO Relay Tester is a powerful and versatile tool for testing relay protection devices in electrical power systems. Its precise current and voltage output capabilities, combined with its user-friendly interface and robust safety features, make it an indispensable tool for power engineers and technicians. Whether used for routine maintenance, fault diagnosis, or complex system testing, the ATO Relay Tester ensures the reliability and safety of power systems.
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