OPERATION

Page 19

MANUAL OPERATION

Fig. 23 Preparing to Manually Close Breaker

WARNING

Powerful springs. Do not place your hands or any part of your body inside the circuit breaker while the indicators show CHARGED (yellow) or ON (red).

CAUTION

To avoid damaging the

 

mechanism, do not close

 

the circuit breaker when

 

the On-Off Indicator shows

 

ON (red).

MANUAL CLOSING (Motor-Operated MU and ML Types):

1.Check to make sure that the On-Off indicator shows OFF (green).

2.Attach the closing handle to the breaker if it is not already attached.

3.If the closing spring status indicator shows DISCHARGED (white):

Turn the closing handle clockwise (Fig. 23). The breaker will close (On-Off indicator changes to ON) after the handle is turned approximately 75° (Fig. 24).

NOTE If the handle is turned in small increments, the closing spring will store the energy from the handle action and the circuit breaker will close before 75° of rotation.

If the closing spring status indicator shows CHARGED (yellow):

Turn the closing handle clockwise. The breaker will close after the handle is turned approximately 10°.

4.Release the handle, and it will return to its initial position.

Fig. 24 Manually Closing Breaker

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Image 23
Toshiba HV6AS instruction manual Manual Operation, On red
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HV6AS specifications

The Toshiba HV6AS is a sophisticated high-voltage IGBT (Insulated Gate Bipolar Transistor) module, primarily designed for demanding applications in industrial and energy sectors. This module stands out due to its superior performance characteristics, which allow it to handle high voltages while delivering optimal efficiency and reliability.

One of the key features of the HV6AS is its high voltage rating, typically around 650V, making it suitable for various applications including motor drives, renewable energy systems, and UPS (Uninterruptible Power Supply) systems. This voltage capacity enables the module to effectively control large power loads, ensuring excellent performance in high-demand environments.

The HV6AS adopts cutting-edge technologies that improve its operational efficiency. The design incorporates advanced thermal management features, which help in enhancing its reliability and lifespan. Integrated with a robust heat sink, the module efficiently dissipates heat generated during operation. This is crucial as increased temperatures can lead to reduced performance and potential failure.

Additionally, the HV6AS utilizes a double-sided cooling structure, which allows for superior thermal conductivity and enables the module to perform optimally in high-temperature conditions. This aspect is particularly important for applications in renewable energy, such as solar inverters, where efficiency and durability are key.

Another notable characteristic of the HV6AS is its fast switching capability. The IGBT technology allows for rapid switching between on/off states. This feature is essential in applications such as pulse-width modulation (PWM), contributing to improved power conversion efficiency. The high switching frequency capability means that systems can operate more efficiently, resulting in lower energy losses.

Toshiba’s HV6AS also focuses on enhancing productivity through simplified circuit design. Its compact form factor means that it can be easily integrated into existing systems, saving space and simplifying installation processes. The module’s compatibility with existing drive technologies allows for seamless upgrades to newer systems without significant changes to the overall architecture.

In summary, the Toshiba HV6AS is a highly versatile IGBT module characterized by its high voltage capability, advanced thermal management, fast switching speed, and compact design. These factors make it an excellent choice for a wide array of high-performance applications in various industries, driving innovation towards more efficient and sustainable power solutions. Whether in industrial automation or renewable energy, the HV6AS sets a benchmark for reliability and effectiveness in power electronics.
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