1- Date and Time:
Date and time is the most important in log book. If we want to know about exact parameters from last week then we can easily find out.
2-Incoming voltage.
HT energy consumption is taken from HT meter in the format of KVAh. Many reading are available in HT meters but billing is processed in KVAh formate.
3- Outgoing voltage.
Ones time recorded highest load limit is called a maximum demand. It should be low in against of section load. Section load is the highest load of premises which has to be approved from electricity board authority.
4- Current in Amp.
HT voltage is received from electricity board according HT connection like as 11KV or 33KV. If the voltage is receiving as low or high against 11KV or 33 KV then we will have to increase or decrees from substation.
5- Load in percentage of capacity (KVA)
Premises total load is checked in HT panel through amp meter. R , Y and B phase amp are taken for checking load and unbalance load.
5- Energy load in KW.
Line power factor should be .98 of .99 . If the power factor value is low as .85 then energy consumptions will be 100 present but actual energy will be used only.85 % . It means 15 % energy losses so power factor value is important for system.
6- Battery voltage.
Control supply is used for all protection relay auxiliary supply, ON and OFF TNC switch, Circuit breaker shunt and closing coil. The UPS or battery is used for control supply. If the battery voltage then 12 volt is used. If the UPS supply then 230 V AC is used.
7- Battery charging current.
Temp and humidity meter are used in HT room because high temp and high humidity is very dangerous for technical system. So temp and humidity parameters are required.
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