CLIENT - IOCL BARAUNI (BIHAR)

CONSULTANT -

PROJECT -

HYDROCARBON PROJECT ENGINEERS LTD

ETP/BTP MODERNIZATION PROJECT

CONTRACTOR - UEM INDIA PRIVATE LIMITED

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AJG DKS

DOC. CONTROL NO. : DC/E/515

2 28.03.11

UPS LOAD CALCULATON

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FOR

APPROVAL

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Page :1 of 2

SN Unit Load

(VA)

Qty Load on UPS

(VA)20 10 20030 2 6010 2 20300 2 600100 2 200

2 100 1 100

3 200 1 200

4 1000 1 1000

5 35 2 706 100 1 1007 125 2 2508 375 1 3759 195 2 39010 400 1 400

11 3965

12 991.25

13 4956.25

14 4956.25

15 7500

16 1 Hrs.

= A

= A

= VA

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REV DATE PREPARED BY APPROVED BY

DOCUMENT NO.

7500 / 110

Selected Rating of UPS

Back up Time for Full Load

UPS SIZING CALCULATIONS FOR BTP

Therefore Load on UPS

Considering spare capacity of 25% for future expansion

Therefore, total load requirement on UPS

1

Flow Transmitter (Magnetic Type)Oil AnalyzerpH AnalyzerTOC AnalyzerSulphide Analyzer

Required UPS Rating (Minimum)

Equipment/Item

Battery charging load

36.05

Inrush current during start-up of the biggest block

load1370

Dell 25" LCD MonitorDell Dell Precision T3500 Workstation without MonitorDell Optiplex GX 760 Workstation without Monitor

Inrush Current Calculations:

Practically since the UPS is having a static bypass line, the system will transfer the load to

3965 / 110

Full load current of the UPS68.18

Total load current

the load to the main line during transients. However to verify the capability of the inverter to feed the transient in the worst case of mains not available during the transient, the inrushcurrent verification is done as below

12V DC, 8.33 A, Bulk Power Supply (Redundant) for DCS

controller

24V DC, 8.33A Bulk Power Supply (Redundant) for

wireless gateway

24V DC, 41.67A Bulk Power Supply (Redundant) for

Solenoid Valve

8 port Ethernet switchDell 20.1" TFT Monitor

REVIEWED BY

UPS LOAD CALCULATION

BTP-502-02-D19A

DOC. CONTROL NO. : DC/E/515

AJG

AJG

FOR APPROVALAJG

AJG

NIRAJ

AJG

AJG

Page :2 of 2

=

= A

=

= A

= A= A

=

=

= A

=

= A= A

= A

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DOCUMENT NO.

Crest factor for the load 3 (Assumed, to be cofirmed by vendor)

150% for 10s

(PLC connected load of 1300VA)

5*1370/110(Inrush current equals to 5 times the full load currrent)

62.27

Load current (excluding the biggest block load) (3965-1370)/110

23.59

Total load current during start up of the biggest block load on the running UPS

(62.27+23.59)85.86

As per UPS datasheet overload capacity

of the biggest block load with the rest of loads running.

Therefore, Selected UPS is suitable based on the inrush current calculation.

Based on Crest Factor:

102.27

The overload capacity of the UPS is "Greater" than the maximum inrush current during start-up

Due to non-linearity of the instrument load connected to this UPS, crest factor verification is alsodone as follows.

The selected UPS of 7.5KVA is suitable

170.45

Therefore, Selected UPS is adequate.

Conclusion:

Ipeak (for full load rms current of 36.05 Amp) 3 * 36.05108.14

Ipeak for 7.5KVA UPS = 2.5 * 68.18 A

(Considering crest factor of 2.5 for UPS)

1.5*7500/110

UPS LOAD CALCULATION

BTP-502-02-D19A

DOC. CONTROL NO. : DC/E/515

AJG

AJG

AJG

AJG

AJG

NIRAJ

REVIEWED BY

AJG

FOR APPROVAL

UPS Power Consumtion List

Doc. No. :15180135-DCS-BTP-UPS-LOAD

Revision 3 – 29-June-2011 – Page 6 of 20

IOCL,Barauni

UEM Pvt. Ltd.

Sr. Group Group Name Model Item Description QuantityUnit Amp

12VDC

Total Amp

12VDC

Unit Amp

24VDC

Total Amp

24VDC

1 CNTR BTP VE3006 Controller (MDPlus) 2 1.80 3.60 0.00 0.00

2 AI16 BTP VE4003S2B6 Series 2 AI, 16-Channel, 4-20 mA, HART Card 5 0.15 0.75 0.60 3.00

3 AO8 BTP VE4005S2B1 Series 2 AO, 8 Channel 4-20 mA with HART Card 1 0.15 0.15 0.30 0.30

4 DI32 BTP VE4001S2T2B4 Series 2 DI, 32-Channel, 24 VDC, Dry Contact Card 15 0.08 1.13 0.15 2.25

5 DO32 BTP VE4002S1T2B5 Series 2 DO, 32-Channel, 24 VDC, High-Side Card 6 0.15 0.90 0.00 0.00

BTP Smart Wireless Gateway 1 0.00 0.00 0.50 0.50

Total 6.53 6.05

With 20% Spare 7.83 7.26

Grand Total 7.83 7.26

1 Relay BTP -- 24V DC SOVs 66 0.00 0.00 0.50 33.00

Total 0.00 33.00

With 20% Spare 0.00 39.60

Grand Total 0.00 39.60

12V DC & 24V DC Power Consumption Calculation for System

24V DC Power Calculation for Powering Field Solenoid

Emerson Process Management 2009 - Confidential and Proprietary

UPS Power Consumtion List

Doc. No. :15180135-DCS-BTP-UPS-LOAD

Revision 3 – 29-June-2011 – Page 3 of 20

IOCL,Barauni

UEM Pvt. Ltd.

110 V AC Incoming Supply

Sr. Group Name Make / Model Item Description Quantity Load (VA) Unit Amp Total Amp Total Required Amp

1 BTP Meanwell 12V DC, 8.33 A, Bulk Power Supply (Redundant) 1 100 0.909 0.91 0.91

2 BTP Meanwell 24V DC, 8.33A Bulk Power Supply (Redundant) 1 200 1.818 1.82 1.82

3 BTP Meanwell 24V DC, 41.67A Bulk Power Supply (Redundant) 1 1000 9.091 9.09 9.09

4 BTP 3-Com/D-Link 8 Port Ethernet switch 2 35 0.318 0.64 0.64

5 BTP Dell 20.1" TFT Monitor 1 100 0.909 0.91 0.91

6 BTP Dell 25" LCD Monitor 2 125 1.136 2.27 2.27

7 BTP Dell Dell Precision T3500 Workstation without Monitor 1 375 3.409 3.41 3.41

8 BTP Dell Dell Optiplex GX 760 Workstation without Monitor 2 195 1.773 3.55 3.55

Total Load (Amp) 22.59 22.59

Total KVA for 110 V AC 2.49 2.50

110V AC UPS Power Consumption

Emerson Process Management 2009 - Confidential and Proprietary