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.

Motor Contactors and Circuit Breakers

For this section, quite a lot of the items will be explained

Motor Starter
 

Control
- Manual: used when the starter motor is operated manually (on, off, done directly on the starter)
- Auto: used when necessary on, off can be done from somewhere else (remote control) and usually a separate starter motor fitted with a control panel (operation panel).

Association

1. Components: control functions, short circuit protection, overload protection and isolation into a single component (integrated).
2. Components: the control function carried out by contactors and other functions carried out by GV motor circuit breaker.
3. Component: control functions performed by the contactor, and overload protection function performed by a safety relay overload, while the short-circuit protection function and isolation with GV motor circuit breaker or circuit breaker type of MA.

Zelio Smart Relay

Zelio is a smart relay.

The purpose of creation of the Smart Relay :

1. To replace the logic and relay control circuit construction which is a direct installation.

2. With smart relay control circuit is built in software.

3. Smart Relay is designed for installation and maintenance of industrial electrical technicians who do not have to have a high electronics skills.

Advantage Smart Relay:

1. Very easy to implement and faster project implementation time.

2. Is flexible and very reliable.

3.Easy to modify (with software).

4. More economical than PLC for simple applications.

5. Require a shorter training time.

General Rules Grounding System

General Rules Grounding System

> All open conductive parts must be connected to earth via the protective conductor (PE)

> Section that can be touched by the open conductive simultaneously grounded conductor shall be connected with the same (equipotential bonding)

> Switching devices (switching device) should be automatic release of all the installations are troubled by the touch of dangerous disturbance.

> The maximum tripping time rather than switching device must be lower than the time specified on the map "effect of current - the duration of current flow in the human body."

Basic Principles of Protection of Human Life

BASIC PRINCIPLES OF PROTECTION OF HUMAN LIFE

1 Tap Jump (Direct Contact)
2 Tap Indirect (Indirect Contact) PUIL 2000

> Protection of humans from direct touch
Definition is "the contiguity of human or livestock with live parts" (PUIL 2000), such contacts occurred between members of the human body directly or livestock with live parts that will cause electric shock. "

Human protection in accordance with PUIL 2000

> Impedance of the human body

UC = ZT ID

> ZT depends on :
* Frequency
* Voltage touch
* Track the flow of electricity in the human body

> The hazard depends on :
* Strong noise current ID
* The length of time the flow of electricity through the human body
* At 50 Hz, sensitivity at the maximum rate.