4.5.7An electrical interlock shall be provided to ensure the isolation switch does not open with the control power transformer under load. This interlock shall be designed such that during switch opening, the transformer secondary is disconnected prior to the opening of the switch blades. Also, during switch closing, the switch blades must close before the secondary load is reconnected.

4.5.8An electrical interlock shall be provided to prevent the vacuum contactor from being closed using external test power unless the isolation switch is fully opened and the secondary of the normal control power transformer is disconnected from the control circuit to prevent backfeeding the transformer.

5.Ratings

5.1Controllers shall be rated as follows: 5.1.1 Interrupting Ratings

- Contactor

7.2kA @ 6.6kV Max.

- Controller

50kA RMS Sym. @ 5.0kV Max.

 

200MVA @ 2.3kV

 

350MVA @ 4.0kV

 

400MVA @ 4.6kV

5.1.2 Continuous Current Ratings

 

N-1

Enclosure (Ventilated)

720A

N-1

Enclosure (Non-ventilated)

650A

N-12, 3, 3R Enclosure

600A

5.1.3 Horsepower Ratings - Induction Motors (Approximate)

 

 

@2.3kV@4.2kV

 

N-1

Enclosure (Ventilated)

3000

5500

N-1

Encl. (Non-ventilated)

2750

5000

N-12, 3, 3R Enclosure

2500

4500

5.1.4 Short Time Current Ratings

4320A - 30 seconds

10,800A - 1 second

5.1.5 Impulse Voltage Withstand

60kV

1.2 x 50 microsecond wave

Rev. 5, 2/16/1999

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Toshiba JK Series manual 50kA RMS Sym. @ 5.0kV Max

JK Series specifications

The Toshiba JK Series represents a significant advancement in the field of home appliances, specifically in cooking technology. This innovative range of microwave ovens combines cutting-edge features, energy efficiency, and sleek design, making them a standout choice for modern kitchens.

One of the primary characteristics of the Toshiba JK Series is its robust power capacity. Most models come equipped with high wattage, allowing them to cook food quickly and evenly. This feature is especially beneficial for busy households where time is of the essence. Additionally, the JK Series incorporates advanced heating systems that utilize a combination of microwave and grill functions, enabling users to achieve perfectly cooked meals with a crispy finish.

A key technology integrated into the Toshiba JK Series is the Smart Sensor function. This intelligent feature adjusts cooking times and power levels based on the moisture levels of the food, ensuring optimal results every time. Users can easily reheat leftovers or cook fresh ingredients without the guesswork typically associated with microwave cooking. This smart approach not only enhances convenience but also promotes energy efficiency, targeting precision in both cooking and power consumption.

Another notable aspect of the Toshiba JK Series is its user-friendly interface. Many models feature a large LED display and intuitive controls, allowing for seamless navigation through various cooking settings. The series often includes pre-programmed options for common foods, such as popcorn, pizza, and vegetables, making meal preparation straightforward and efficient.

In addition to functionality, Toshiba emphasizes safety in the JK Series. Models typically come with child safety locks to prevent accidental operation, giving parents peace of mind. Furthermore, the durable materials used in construction ensure longevity and reliability, making the JK Series a worthwhile investment for any kitchen.

The stylish design of the Toshiba JK Series also deserves mention. With a contemporary finish and compact form factor, these microwave ovens can easily complement any kitchen décor, enhancing overall aesthetic appeal.

In summary, the Toshiba JK Series is a well-rounded choice for consumers looking for powerful, efficient, and stylish microwave ovens. Its combination of smart technology, user-friendly features, safety considerations, and appealing design solidifies its reputation as a leading option in modern cooking appliances. Whether for reheating or cooking, the JK Series is designed to meet the demands of today’s fast-paced lifestyles while ensuring high-quality results.