TECHNIC-DELTA M&E ENGINEERING SDN BHD
No. 54, Mezzanine Floor, Jalan Cerdas,
Taman Connaught, Off Jalan Cheras,
56000 Kuala Lumpur.
Tel: 03-91018066
Our Ref: IMS070
Date: 21th July 2010
Attn: Mr. A.M Chai
Dear Sir,
Below is the detail as you mentioned in your purchase order for your onwards submission to
consultant approval.
1. Design Basic
a) UPS 10kVA / 3 phase input/3phase output

Model: PW9355-10-N-10

Rating: 10kVA / 9kW

Dimensions of UPS(HxWxD): 817x305x702

weight: 165 kg

Battery: Built-in battery with 10minutes backup time
b) Battery backup Calculation

Inverter Efficiency, n= 0.93

Power factor, p=0.9

Number of cell, N= 192
UPS Requirement:

Watts per cell= 10kVA*0.9/192*0.93= 50.4 Watts/cell

Watts per battery= 50.4*6 = 302.4 Watts/block
Proposed Battery:

Model: 7Ah 12V

No of cell: 6

No of Block: 32

Battery Type: Sealed Lead Acid Battery

Battery Watt/cell@10mins: 29.00

Battery Watt/Block@10mins: 174.00

Referring to the technical manual of battery, model of 7Ah 12V will deliver up to 29.00
Watt Per Cell for 10mins. It will takes 2X 29.00 Watt Per Cell= 58 Watt Per Cell to
meet requirement of 50.4 Watt Per Cell.

Our selection is 2 banks x 32 blocks of Rocket Model: ES 7 12
2. Installation methodology of equipment

Please refer to attachments files of 9355_15kVA_manual_ENG_1023625_rev_C
3. Plant equipment requirement

Please refer to attachments files of 9355_15kVA_manual_ENG_1023625_rev_C
4. Commisisioning procedure

Please refer to attachments files of 9355_15kVA_manual_ENG_1023625_rev_C
5. Maitenance and recommendation of spare parts list of equipment

2 times routine preventive maintenance services for 1st year

Half year of maintenance frequency

1 time for inspecting maintenance services & 1 time for full maintenance services