CEIG APPROVED 33KV SUB STATION DRAWING

33KV SUBSTATION

33KV SUBSTATION PLAN

2 MVA TRANSFORMER CONTROL CABLE SCHEDULE

CABLE SCHEDULE

HEAT RUN TEST

  Heat Run test also called as temperature rise test is done for transformers to know about the behaviour of transformer.

   The heat run test is continued until the windings and the oil in the tank attain a steady temperature. This temperature rise must be within permissible limits which is set by designer

Over Head Lines Spacing Calculation

The Following mentioned formula gives the general safe spacing between the OH Lines

where
D = 500 + 18 U + (LxL)/50

D = spacing in mm,
U = phase-to-phase voltage in kV, and
L = span length in m.

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UPS INSTALLATION

INSTALLATION OF UPS

 An uninterruptible power supply, also uninterruptible power source, UPS or battery/flywheel backup, is an electrical apparatus that provides emergency power to a load when the input power source or mains power fails. A UPS differs from an auxiliary or emergency power system or standby generator in that it will provide near-instantaneous protection from input power interruptions, by supplying energy stored in batteries, supercapacitors, or flywheels. The on-battery runtime of most uninterruptible power sources is relatively short (only a few minutes) but sufficient to start a standby power source or properly shut down the protected equipment.

PROCEDURE OF INSTALATION

STEP-1:

Unload and Unpack the UPS safely and carefully

If the UPS is not immediately installed the following must be remembered:

·          The UPS should be stored in the original packing and shipping carton.

·          Do not tilt the UPS cabinet more than 10° from vertical or cabinet may tip over.

·          The recommended storing temperature is between +15° … 25°. • The equipment must always be protected from moisture and weather.

STEP-2:

Verify the rating of the UPS and follow the Instructions mentioned by manufacturer

STEP-3:

Verify the A.C Input required for UPS

Possible inputs

a.     Single Phase

b.     Three Phase

STEP-4:

Verify the D.C Voltage required for UPS

Some available inputs are

a.     12V D.C

b.     24V D.C

c.     240V D.C

No of Batteries is decided by D.V Voltage of UPS

S.No	D.C Voltage in Volts	No of batteries	Battery Voltage in Volts
1	12V	1 No	12V
2	24V	2 Nos	12V
3	240V	12 Nos	12V

STEP-5:

Connect the batteries required in Series and connect it on the D.C input required for UPS.

STEP-6:

Connect the A.C Input required for the UPS

STEP-7:

Switch ON the A.C input and follow the instruction manual

NOTE:

When we switch ON the UPS after few hours / days need to follow this

1.     Remove the battery terminal and discharge the battery with Load

2.     Then Switch ON the A.C Input and connect the D.C Input.

The D.C Voltage of UPS gives the No .of batteries required for back up of UPS.