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BM POWER SUPPLY &

ELECTRICAL SERVICES

BM POWER SUPPLY & ELECTRICAL SERVICES Tel# 563-2946 / 563-2957 / 561-0544 Fax# 563-2969 / 562-4421

Email Address: bmpowermain@yahoo.com

Customer : JMY ENGINEERING Date: Nov. 30,2013

Location : IM DIGITAL INC. (FPIP Sto. Tomas, Batangas)

Transformer Specifications Capacity 1500KVA

Phase Three (3)

Frequency 60 Hz

Cooling Class ONAN

High Voltage 460V

Low Voltage 380V

Vector Diagram Dyn

HV Tap Position Not applicable

Impedance 5.91%

Temperature Rise 60°C

Insulating Liquid Mineral oil

Brand Shinsoeng Industrial Co., Ltd.

Serial Number 11844

Year Manufactured 2011.10

Certified Test Results

1. Insulation Resistance and Dielectric Adsorption/Polarization Index of Windings

(Megger Test):

Test Voltage Five-Minutes

DC (in KV) (in GIgaohms)

Primary to Ground 1 24.5

Secondary to Ground 1 29.8

Primary to Secondary 1 22.1 Note: 1. The minimum Insulation Resistance two (2) Megaohms/KV or 100 Megaohms for 0 to 600V; 1000 Megaohms for

601-5000V; and 5000 Megaohms for greater than 5000V.

Remarks: PASSED

Test Instrument: MEGGER, MIT520/2

2. Transformer Insulating Oil Dielectric Breakdown Voltage (DBV) test:

Trials As Found DBV

1 41.9 KV

2 39.0 KV

3 30.1 KV

4 30.0 KV

5 32.2 KV

Average 34.6 KV Note: The average Dielectric Breakdown Voltage of transformer insulating oil should be 26KV or higher to be considered

Satisfactorily Good.

Remarks: PASSED

Test Instrument: HIPOTRONICS, DIGITAL OIL TESTER

BM POWER SUPPLY & ELECTRICAL SERVICES Tel# 563-2946 / 563-2957 / 561-0544 Fax# 563-2969 / 562-4421

Email Address: bmpowermain@yahoo.com

3. Transformer Turns Ratio (TTR) Test:

Tap Primary Voltage Computed As found Ratio

(per phase) ratio U,V/O,U V,W/O,V W,U/O,W

1 460 2.091 2.075 2.075 2.075 Note: As found ratio must not exceed ± 0.5% of computed ratio

Remarks: PASSED

Test Instrument: MEGGER, TTR

4. Winding Resistance Test:

Tap As Found Resistance Test

Test Current 1A

U,W U,V W,V

1 0.002mΩ 0.002mΩ 0.003mΩ

Secondary Side

O,U O,V O,W

0.002mΩ 0.002mΩ 0.003mΩ

Note: Data obtained to be compare for each phases must at least approximately balanced.

Remarks: PASSED

Test Instrument: BIDDLE, DLRO

5. Excitation Current Test (No Load Test):

As Found Excitation Current @ HIGH SIDE

Test Voltage U,V U,W V,W

491 4.22 5.08 3.97 Note: 1. Excitation current, test data pattern for three phase transformer is two (2) similar readings and one (1) lower

reading;

2. Excitation current at rated voltage of transformer should not exceed 3% of full load current

Remarks: PASSED

Test Instrument: NANOVIP (ammeter,voltmeter,wattmeter)

6. Evaluation and Recommendation:

All tests conducted on transformer with the above specifics satisfactorily passed and/or meet

the standards for maintained liquid filled transformers (ANSI/NETA-MTS2011) thus transformer is

ready for energization.

Tested By: Checked by:

ERWIN GARCIA CHRISTIAN AARON AZCUETA

Secondary Voltage

(per phase)

220