To check and correct the defects of the system equipment
1.? To check and correct the defects of the system and electrical equipment in the building, 2
. To check and correct the defects of transformer
.To check and correct the defects of the system, and the electrical equipment in building maintenance (maintenance) be done continuously and every time examine repair.In the future, check break out 2 methods
1. Check with the senses. Check the working condition of electrical equipment listening, look, smell, or touch
2.To check the test tool is mainly used multimeter maker or Insulation tester meter air measuring resistance grounding. Monitoring tool, one that can be created using the easy way with so-called Tess Lampe
.The test lamp is a test tool
circuit breaker แรงต,
g circuit breaker 1 phase consists of CB size 1 polarity. Use with safety load center. (Load Center) used with the system 1 phase
B.Circuit breaker 3 phase is the size 3 terminals (3 Pole) CB models used with the system 3 phase
(a) 1 Pole
(b) 2 Pole1.
monitoring circuit breaker
1.1 inspection system of Mechanical
the test pressing the reset button 1
.2 checking before touching and insulation
G. Test contact
inspection methods contact with Multimeter
B. the insulation test.
how the insulation with a multimeter, 2
. Maintenance circuit breaker
1.Hose connector of circuit breaker
g connectors loose or
B. burns caused by arc scorched the nodes or
C. Not to fly. To make dirty the connectors such as various debris 2. Contact
.Contact of the moving parts that the move will be close together. When the contact to each other. Resistance to the zero ohms
3.? The generality of the installation and fasteners
. Be strong. Don't decay
B.Attached to the secondary key firmly. No loose insulation of cables
1. Causes of talent. Make insulation deterioration 1.1
1.2 temperature. Insulation covering crack bad
1.3 current flows through too
g late too small
B.Install more equipment, but the same
C. Install line protection device 1.4 inappropriate
. Cables being pressed
1.5 vibration 1.6 joint loose 1.7. The lack of inspection and maintenance, 2
. The insulation of the electric wires
.When a control circuit to open and close a light bulb to use megger. Insulation test on electrical wiring with the belt harnesses
1.? The resistance value equal to zero or less 0.5 Mega ohm insulation deterioration
2. Resistance more than 0.5 Mega ohm insulation does not deteriorate
B. tube, along with 1 point, then check the insulation between the wiring 2 Heaven and earth
1. The less resistance 0.5 MEG ohms. Insulation deterioration
2. Resistance than 0.5 Mega ohm insulation does not deteriorate
2.2. Test methods of insulation of cables when wiring
electrical conduit figure 10.8 testing insulation of cables. When the electrical wiring in conduit
a. the maker or insulation tester meter test terminal any
B.Test between the cables and soil
3., maintenance of the insulation of the wire cable.
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