6tH weEk!

Next department is service department. We met Pn.Sharinee bt. Mamat who work as the coordinator. She kindly explained to us about this department.She told us that our time table a bit weird because we should follow service department before meter department.But we told her that we just follow the timetable given. She briefly explained that Service Unit responsible is to provide the service line from low voltage overhead line (SAVR) to house (meter board). Low voltage services are line (usually insulated) that tap off from main low voltage line to feed one customer or group of customer.


sizes of overhead used in service unit department are:

a) 3 x 16 mm2 + 25 mm2 for 3 phase meter
b) 1 x 16 mm2 + 25 mm2 for 1 phase meter


The equipments used are:
a) J-hook
b) Suspension clamp
c) Dead end clamp
d) Insulator piercing connector (IPC)
e) End tube

>J-hook is made from galvanize steel. It is use to detain and support the suspension clamp and the dead end clamp.

>Suspension clamp is suitable for neutral without damaging the insulator at the suspension clamp. This clamp is set up at direct pole and angle pole that not exceeded 30˚. If so the dead end is used. Suspension clamp is needed to support the wire service too long and used more than one spun pole.

>Dead end clamp suitable for the termination pole, section pole and the angle pole which is the angle exceeded 30˚. The size of dead end clamp also depends on neutral wire (25 mm2).

>IPC is used to connect the electric supply from the low voltage overhead line (SAVR) to service line. This connector used to make sure the continuity of supply between the main line (Main) and the tee-off (Tap)

>End tube is used for covering up the conductor that exposed at the end. It is made from EPDM material that can detained very high density weather

a view before the cable connection

TNB's workers try to complete the service part.

this is IPC.

this is phase rotator. The function are:
· Used for check the phasing of the three-phase connection.
· Connect the three wires (Red, Yellow and Blue) to the cut-out according to its phase.There are 3 cut-out for three-phase supply.
· The phase rotator will rotate in clockwise if the connection is correct.

the villagers called for help because they don't receive electricity.So we check the connection .

the "person who work under contract" did not put the cable the way it should be.This is the reason why the villagers didn't get the electricity.

We can not follow the workers under service department frequently because they have only one group.The van is also small and we don't have much space to follow them.But once we follow them, we used the opportunity to learn soo many things from them...:)