Surge Arrester

Solar voltage, often called spikes (nails) or transient generally occurs in most electricity network in the form of a very rapid increase in voltage. The occurrence of solar voltage can be caused by lightning or switching movement (switching-termination) of the contactor, circuit breaker, thiristor and switching capacitors. Voltage solar can cause damage to electrical equipment due to the pressure on component isolation far beyond the limits of the voltage.

ACB (Air Circuit Breaker)

ACB Is Air Circuit Breaker.

 

Masterpact, reliability

Merlin Gerin latest technology has produced a new concept for the Power Circuit Breaker. With all the advantages of modular construction in polyester enclosure, Masterpact offers performance that is more than just meeting international standards. Masterpact has a high thermal resistance to enable the workings of the so-called Total Discrimination. This is to ensure continuity of service due to a power source in the event of disruption (short circuit), Masterpact would "suspend" disconnection, before all the circuit breaker on the bottom side cut off (trip). Thus, if such interference can only occur at one point, then the circuit breaker in that area alone is disconnected.

Masterpact, without treatment
Without treatment, Masterpact can be operated as many as 10,000 times on the 1600A. If it happens 2 times a day trip, then Masterpact to serve the plant for 13.7 years without treatment. Only by changing the contact point and the arc chutenya, Masterpact to operate 20,000 times on the 1600A.

ELCB / RCCB (Residual Current Circuit Breaker)

How to secure the human and equipment?

Did you know that 30% of power disturbances on the installation is not caused by overload or short circuit, but due to disruption of isolation? Equipment and wiring insulation is bad, or used the wrong tool can cause damage to equipment (fire) and humans (death).

The risk of fire.
The main result of the interference current through the conductors or other equipment is not expected to receive a stream is an abnormal increase in temperature. High temperatures can cause damage to the cable or even a spark of fire in the material, then burned.

 

The risk of death

This occurs in humans and is also called "Electrocution". Electrocution is the flow of current to the human body, and very dangerous. Two current flow damage vital body functions : respiration and heart rate. The study states the risk scale based on two factors : the rated current and duration of contacts.

Type of protection provided by the device leakage current
Leakage current devices provide two kinds of security :

MCCB (Moulded Case Circuit Breaker)

MCCB is a medium voltage circuit breakers. In choosing a circuit breaker things to consider are:

- Characteristics of the system where the circuit breaker is installed.
- The need for continuity of service power source.
- The rules and standards in force protection. 
 
Characteristics of system

1. System voltage
   Operational voltage of the circuit breaker must be greater or equal to the minimum system voltage.
2. Frequency system
   Rated frequency of the circuit breaker harussesuai with system frequency. Merlin Gerin circuit breaker can operate at a frequency of 50 or 60 Hz. For applications at a frequency of 400 Hz please contact us.

MCB (Miniature Circuit Breaker)

MCB is an electrical circuit breaker equipment at an electric power system, which is able to open and close the electrical circuit in all conditions, including short circuit, according to the rating. Also on the normal stress condition or not normal. Miniature Circuit Breaker (MCB) in design with main functions to:

• Secure the cable against overload and short circuit current.
• Pass more current without heating.
• Open and close a circuit under rated current.