What is ZCT? it operating principle and how is work with
RCCB (residual current circuit breaker)?
- 4 Answers
- 49042 Views
- I also Faced
- E-Mail Answers
Answer Posted / g de nys
A ZCT is installed in the Neutral-Earth bonding conductor.
It will initiate a trip only when neutral current is
returned by the Protective Earth conductor rather than the
load neutral conductor. This usually occurs when there is
phase-earth leakage (or fault). This protection only works
effectively in Direct earthed installations (not MEN).
RCCB's operate by monitoring current balance with a CT
around all phases and neutral. A trip is initiated when
current flowing out one phase is not balanced by current
flowing in another phase (or neutral). This occurs when
current takes the return path via Protective Earth
bypassing the RCCB. This system works well in direct
earthed installations or MEN, provided the neutral is not
bonded to earth on the load side of the RCCB.
| Is This Answer Correct ? | 8 Yes | 12 No |
Post New Answer View All Answers
diff.between servo motor and ac motor
For some transformers we are using solid neutral earthing while some others we are using resistance earthing why ?
How to Make relay co ordination chart for a Electrical power distribution of a plant
Explain the role of a car driver as one of a feedback mechanism.
What happens if the negative to earth voltage is greater than positive to earth voltage in the battery of substation?
Hi Friend I am used multimeter to measure the voltage between R Phase(SS1) to R Phase(SS2). In SS1 is connected with UPS loads. But I am getting voltage between these 2 R Phases. Please give some idea friend
What will be the diameter of pipe between conservation tank and transformer
What are the two segments of nyquist contour.
What is difference between Over Current & Earth Fault protection?
when generator short circuit condition, the current how dissipates. or at short circuit voltage not available then current how can flow?
how can i reduce sparking without stepdowning the voltage
please give some hindalco placement papers for written exam
What does bode plots shows?
I have 1500/1A CT If i connect this CT in 6.6KV bus bar means what will be the voltage present in CT?
what's the simultenous maximum demand (SMD)..what the diffrent MD and SMD?
