BCCC080740
C B Ramesh
CLIENT
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IOCL BARAUNI (BIHAR)
CONSULTANT
�
HYDROCARBON PROJECT ENGINEERS LTD
PROJECT
�
ETP/BTP MODERNIZATION PROJECT
CONTRACTOR
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UEM INDIA PRIVATE LIMITED
03.10.2011
03.10.2011
21.10.2011
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UPS SIZING CALCULATIONS FOR BTP SN
Equipment/Item
Flow Transmitter (Magnetic Type) Oil Analyzer 1 pH Analyzer TOC Analyzer Sulphide Analyzer 12V DC, 8.33 A, Bulk Power Supply (Redundant) for DCS 2 controller 24V DC, 8.33A Bulk Power Supply (Redundant) for 3 wireless gateway
Unit Load (VA) 20 30 10 300 100
Qty 10 2 2 2 2
Load on UPS (VA) 200 60 20 600 200
100
1
100
200
1
200
4
24V DC, 41.67A Bulk Power Supply (Redundant) for Solenoid Valve
1000
1
1000
5 6 7 8 9 10
8 port Ethernet switch Dell 20.1" TFT Monitor Dell 25" LCD Monitor Dell Dell Precision T3500 Workstation without Monitor Dell Optiplex GX 760 Workstation without Monitor Battery charging load
35 100 125 375 195 400
2 1 2 1 2 1
70 100 250 375 390 400
11 Therefore Load on UPS
3965
12 Considering spare capacity of 25% for future expansion
991.25
13 Therefore, total load requirement on UPS
4956.25
14 Required UPS Rating (Minimum)
4956.25
15 Selected Rating of UPS
7500
16 Back up Time for Full Load
1 Hrs.
Inrush Current Calculations: Practically since the UPS is having a static bypass line, the system will transfer the load to the load to the main line during transients. However to verify the capability of the inverter to
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(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
A
A
Total load current during start up of the biggest block load on the running UPS
As per UPS datasheet overload capacity
= =
(62.27+23.59) 85.86
=
150% for 10s
=
1.5*7500/110
=
102.27
A A
A
The overload capacity of the UPS is "Greater" than the m aximum inrush current during start-up 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: Due to non-linearity of the instrument load connected to this UPS, crest factor verification is also done as follows. 3 (Assumed, to be cofirmed by vendor)
Crest factor for the load
=
Ipeak (for full load rms current of 36.05 Amp)
= =
3 * 36.05 108.14
A A
=
2.5 * 68.18
A
=
170.45
A
Ipeak for 7.5KVA UPS (Considering crest factor of 2.5 for UPS)
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.
12V DC & 24V DC Power Consumption Calculation for System Sr.
Group
Group Name
Model
1 2 3 4 5
CNTR AI16 AO8 DI32 DO32
BTP BTP BTP BTP BTP BTP
VE3006 VE4003S2B6 VE4005S2B1 VE4001S2T2B4 VE4002S1T2B5
Item Description
Quantity
Controller (MDPlus) Series 2 AI, 16-Channel, 4-20 mA, HART Card Series 2 AO, 8 Channel 4-20 mA with HART Card Series 2 DI, 32-Channel, 24 VDC, Dry Contact Card Series 2 DO, 32-Channel, 24 VDC, High-Side Card Smart Wireless Gateway
2 5 1 15 6 1
Unit Amp Total Amp Unit Amp Total Amp 12VDC 12VDC 24VDC 24VDC 1.80 3.60 0.00 0.00 0.15 0.75 0.60 3.00 0.15 0.15 0.30 0.30 0.08 1.13 0.15 2.25 0.15 0.90 0.00 0.00 0.00 0.00 0.50 0.50
Total With 20% Spare Grand Total
6.53 7.83 7.83
6.05 7.26 7.26
24V DC Power Calculation for Powering Field Solenoid 1
Relay
BTP
--
24V DC SOVs
66
0.00
Total With 20% Spare Grand Total
BCCC080740
C B Ramesh
0.00 0.00 0.00 0.00
03.10.2011
0.50
03.10.2011
21.10.2011
33.00 33.00 39.60 39.60
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.
110V AC UPS Power Consumption 110 V AC Incoming Supply Sr. 1
Group Name BTP
Make / Model Meanwell
Item Description 12V DC, 8.33 A, Bulk Power Supply (Redundant)
Quantity 1
Load (VA) 100
Unit Amp 0.909
Total Amp 0.91
Total Required Amp 0.91
2
BTP
Meanwell
24V DC, 8.33A Bulk Power Supply (Redundant)
1
1.82
1.82
BTP BTP BTP BTP BTP BTP
Meanwell 3-Com/D-Link Dell Dell Dell Dell
24V DC, 41.67A Bulk Power Supply (Redundant) 8 Port Ethernet switch 20.1" TFT Monitor 25" LCD Monitor Dell Precision T3500 Workstation without Monitor Dell Optiplex GX 760 Workstation without Monitor
1 2 1 2 1 2
200 1000 35 100 125 375 195
1.818
3 4 5 6 7 8
9.091 0.318 0.909 1.136 3.409 1.773
9.09 0.64 0.91 2.27 3.41 3.55
9.09 0.64 0.91 2.27 3.41 3.55
22.59 2.49
22.59
Total Load (Amp) Total KVA for 110 V AC
BCCC080740
C B Ramesh
2.50
03.10.2011
03.10.2011
21.10.2011
