RCCB / RCD - Hangpa ni kenai ke tak kenai rating dia?

RCCB ni Residual Current Circuit Breaker atau nama am RCD - Residual Current Device. Dalam BM ... kita panggil Peranti Arus Bocor Ke Bumi.

Dulu-dulu, la ni pun ada lagi, orang duk panggil ELCB atau Earth Leakage Circuit Breaker. Tapi jenis ELCB ni sebenarnya ni orang pakai dulu-dulu dan ia adalah jenis Voltage Operated. Lain dari RCD yang mana dia adalah jenis Residual Current Operated. Jika nak tahu lebih lanjut apa beza ELCB dan RCD ni boleh ke pautan ni https://www.youtube.com/watch?v=Wo7IUzUT-rU

Harap hangpa semua ni panggil la RCD ke RCCB (Residual Current Operated). Jangan tersilap pula dengan ELCB (Voltage Operated)

Tambahan:

Types of ELCB

Excerpted from Siemens Residual Current Protective Devices

0. Definition

RCD - Residual Current Device (Generic Name)

RCCB - Residual Current Operated Circuit Breaker. It does not have integrated Over Current Protection for Overload and Short Circuit Interruption, only for Residual Current Interruption. It requires to be installed in series with Miniature Circuit Breaker or Fuses, which will trip or cut off the short circuit current.

RCBO - Residual Current Circuit Breaker with Overcurrent. It is integrated with Overcurrent Protection Unit for Overload and Short Circuit Currents.

1. Type AC

Type AC residual current protective devices are suitable only for detecting sinusoidal AC residual currents. This device type is not authorized in every country (e.g. Germany as per DIN VDE 0100-530) for residual current protection and cannot carry the VDE mark of conformity.

2. Type A

Type A residual current protective devices detect pulsating DC residual currents in addition to sinusoidal AC residual currents. This type of device is the most commonly used pulse current sensitive residual current protective device in Germany. It can therefore also handle the residual current waveforms which can occur in the power supply units of single-phase loads with electronic components (e.g. ECG, dimmer switches). Smooth DC residual currents up to 6 mA do not affect the trip properties unacceptably.

3. Type F

Type F residual current protective devices detect all residual current types as do Type A. Additionally, they are suitable for detecting residual currents from mixed frequencies of up to 1 kHz. This will also be able to cope with the possible residual current waveforms on the output side of single-phase connected frequency converters (e.g. in washing machines, pumps). Smooth DC residual currents up to 10 mA do not affect the trip properties unacceptably. Type F residual current protective devices additionally have short-time delayed tripping and enhanced current withstand capability.

4. Type B

In addition to detecting residual current waveforms of Type F, residual current protective devices of Type B are used to detect smooth DC residual currents. Residual current protective devices of this type are suitable for use in 50/60 Hz three-phase AC systems, but not in DC voltage systems or where frequencies differ from 50/60 Hz as on the output side of frequency converters. Tripping values defned up to 2 kHz.

5. Type B+

The same conditions apply for Type B+ residual current protective devices as for Type B residual current protective devices. It is only that the frequency range for the detection of residual currents is extend to 20 kHz: The device will trip within this frequency range below 420 mA.

Di atas sekali, dilampirkan gambar RCCB bersama pengenalan kepada simbol-simbol dan rating yang ada padanya. Harap bermanfaat dan berguna untuk semua.

Untuk perkongsian elektrikal yang lain, Jangan Lupa Subscribe Channel saya (Crux Of EE) ye tuan puan:

Youtube: https://www.youtube.com/c/CruxOfEE

Terima kasih.

Ikhlas,

Crux of Electrical Engineering