VKL11 Residual Current Device RCD Type F

VKL11 Residual Current Device (RCD) TYPE F

1. General

1.1 Function

VKL11F Residual Current Circuit Breaker Type F(RCCB Type F) is appearance design, compact structure,good reliability, and high safety.

The VKL11F RCCB Type F is defined according to IEC/EN 62423. It provides safe and reliable protection against sinusoidal residual currents and pulsating DC fault currents (like type A devices). It is also capable of handling residual currents with mixed frequencies of up to 1 kHz (10, 50, 1000 Hz) in accordance with the IEC 62423 standard. Type F RCCB maintain the standard functionality with superimposed smooth DC residual currents of up to 10 mA without affecting their standard functionality(However, smooth DC fault currents cannot be detected).

VKL11F RCCB Type F have additionally short-time delayed compared to RCCB Type A, and distinguish themselves from other devices thanks to their high resistance to power surges(have an increased surge current resistance of 3,000 A, prevent unwanted trippings e. g. due to surge currents, thunderstorms or operational leakage currents and thus increase system availability): this ensures minimal false tripping and a high degree of safety. They are available as RCCBs (2-pole or 4-pole up to 100 A) . With three versions for different residual currents (30mA,100mA and 300 mA), the RCCB type F functionality is voltage independent and can be used for fault and additional protection.

Note:Washing machines, hoovers, dishwashers, vibrators, hammer drills, heating and heat pumps, ballasts in lighting systems, air conditioners and welding equipment are all appliances that are in daily use in industry and households. As electronic controllers are increasingly used in such devices, residual currents occur that cannot be adequately detected by a type A RCCB. The reason for this is obvious: single-phase frequency converters are being used more and more frequently to control the motor speed in order to make the devices more energy efficient. These frequency inverters can generate residual currents with mixing frequencies other than 50 Hz by outputting a variable frequency in the order of 10 to 400 Hz. As a result, a RCCB Type A may not trip properly in the event of a fault, because it is affected by these mixing frequencies. This would mean that the RCCB will not possibly trip even if a fault occurs in the 50 Hz range.

Residual current circuit breaker VKL11F Type F solve all above problems!

Advantage:

• Suitable for use with single-phase frequency inverters

• Sensitive to alternating and pulsating DC fault currents of the mains frequency (Type A)

• Meets all requirements for RCCBs Type A, so that this can be replaced 1:1 by Type F

• Functionality maintenance with superimposed smooth DC residual currents of up to 10 mA (instead of only 6 mA, as with Type A)

• Sensitive to alternating residual currents with mixing frequencies unequal to 50 Hz (up to 1 kHz)

• High immunity against surge fault currents and mains voltage driven follow-on current pulses up to 3 kA

• Short-time delay of up to 10 ms prevents unwanted triggering by transient leakage currents

• Thunderstorm proof

• Small size for all rated currents

• High short-circuit current resistance of 10 kA

1.2 Selection

Detectable wave form

Type F

Tripping is ensured for sinusoidal AC residual currents pulsed DC residual currents, alternating residual sinusoidal currents up to 1000Hz, maintain the standard functionality with superimposed smooth DC residual currents of up to 10 mA

Tripping sensitivity

30mA - additional protection against direct contact.

100mA - co-ordinated with the earth system according to the formula IΔn＜50/R, to provide

protection against indirect contacts;

300mA - protection against indirect contacts, as well as fire hazard.

Tripping time

Short time delay

 

YUEQING VORAX ELECTRIC CO., LTD (hereinafter referred to as "VORAX"), founded in 2003, has established itself as a prominent player in the low voltage electrics industry in China. With a prime location in Liushi Town, Yueqing city, Zhejiang Province, VORAX benefits from being situated in one of the country's key manufacturing hubs.

Recognized for its dedication to providing professional solutions in the low voltage electric and smart electricity sectors, VORAX focuses on meeting the diverse needs of its customers. The company offers an extensive range of products, including terminal distribution electrical appliances, industrial distribution electrical appliances, and industrial control electrical appliances, ensuring that every aspect of the low voltage electrics field is covered comprehensively.

VORAX boasts a product portfolio that encompasses various essential items, catering to both residential and industrial clients. Among their main offerings are Residual Current Circuit Breakers (RCCB), Residual Current Circuit Breaker with Overload Protection (RCBO), Miniature Circuit Breakers (MCB), Molded Case Circuit Breakers (MCCB), Consumer Units, and Pilot Lamps. These products exemplify the cutting-edge technology and reliability that VORAX consistently delivers.

RCCBs play a vital role in electrical safety by providing protection against electrical shocks and fire hazards. They detect any imbalance in the current between the live and neutral wires and promptly interrupt the circuit, safeguarding individuals and properties from potential harm.

RCBOs, on the other hand, go a step further by combining the functionality of RCCBs with overload protection capabilities. This integrated design enables the immediate detection and isolation of electrical faults such as overcurrent and short circuits, enhancing overall electrical system security.

MCBs are widely used in domestic and commercial applications due to their compact size and reliable performance. These circuit breakers provide short circuit and overload protection, ensuring the smooth and uninterrupted flow of electricity.

MCCBs are preferred in industrial settings for their ability to handle higher currents and withstand heavy loads. These robust and durable circuit breakers offer reliable protection against dangerous electrical faults, helping to prevent damage to machinery and ensuring the safety of workers.

Recognizing the unique needs of consumers, VORAX also manufactures custom-built Consumer Units, allowing for efficient and organized power distribution within residential and commercial buildings. These units serve as the central hub for electrical distribution, ensuring optimum utilization of power while maintaining utmost safety.

Completing their comprehensive product range, VORAX offers high-quality Pilot Lamps that provide clear indication and visual feedback regarding power status, equipment operation, and faults. These lamps play a crucial role in simplifying diagnostics and troubleshooting, streamlining operations, and enhancing user convenience.

VORAX operates with a strong commitment to innovation, continuous improvement, and customer satisfaction. By staying at the forefront of technological advancements and adhering to stringent quality standards, the company has gained a reputation for excellence within the industry.

With a dedicated team of skilled professionals, VORAX delivers exceptional service and technical support to its valued customers. Through its extensive network, the company reaches customers not only domestically but also internationally, catering to a global clientele.

As the demand for low voltage electrics continues to rise, VORAX remains at the forefront, consistently striving to meet and exceed customer expectations. The company's unwavering dedication, extensive product range, and commitment to quality make it a trusted partner for both residential and industrial electrical solutions.

HONOR:

One of few Chinese companies with UL certification for US since 2007.

One of two Chinese companies who have NF certification for France.

The only Chinese company who have ISI certificate for India.