1.0

Manufacturer/Country

-

-

Equipment that are compliant with KEMA, KERRI or CESSI Certifications. 

(Attach Certificates and Type Tests report from STL  Members only)     

 YES

1.1

Type

-

Three-phase

OSFSZ-165000/330

1.2

Class

-

-

2.0

Rated data and characteristics

2.1

Rated power:

- primary/secondary
- tertiary

MVA
MVA

150/165
30

165/165

30

2.2

Cooling

-

ONAN/ONAF

ONAN/ONAF

2.3

Rated voltage

- HV winding
- LV winding
- tertiary winding

kV
kV
kV

330
132
33

330

132

33

2.4

Tap changer:

- type
- on-load tap changer location


- regulating range


- rating

-



%


-

Oil/Vacuum

HV Neutral side
 

+4 x 1.25%
-12 x 1.25%
Rated power on all taps

Oil

HV Neutral side
+4 x 1.25%
-12 x 1.25%
Rated power on all taps

2.5

Frequency

Hz

50

50

2.6

Connection of the three-phase windings (group of vectors IEC 76)

-

YN,a0,d11

YN,a0,d11

2.7

Rated current at ONAF rated power and rated voltage tap:

- HV winding
- LV winding
- tertiary winding

A
A
A

283
704
53

289

722(LINE)/433(PHASE)

303

2.8

No-load current through:

- HV winding
- LV winding
- tertiary winding

A
A
A

@100%

≤0.4(max)
≤0.6(max)
≤0.6(Max)

@100%

≤0.4(max)
≤0.6(max)
≤0.6(Max)

2.9

Short circuit impedance

Base: rated voltage and 150 MVA

Base: rated voltage and 165 MVA

2.9.1

Direct impedance at nominal voltage tap:

- HV/LV
- HV/TV
- LV/TV

%
%
%

15
50
33

15

50

33

2.9.2

Direct impedance at minimum voltage tap:

- HV/LV

%

15

11.0

2.9.3

Direct impedance at maximum voltage tap:

- HV/LV

%

15

16.3

2.9.4

Zero sequence impedance at nominal voltage tap

%

10,47

- HV / LV
- HV / TV
- LV / TV

%
%
%

-
-
-

-
-
-

2.10

Tolerance to be applied to the short circuit impedance, in terms of % of the guaranteed value on:

- nominal voltage tap
- other taps

%
%

+5
-15

+5
-15

2.11

Transformer capacity to withstand external short circuits:

2.11.1

Short circuit duration

S

2

2

2.11.2

Symmetrical short circuit current withstand during the indicated period and asymmetrical short circuit withstand:

- HV winding

kA RMS
kA (peak)

-
100kA/2s

-
100kA/2s

- LV winding

kA RMS
kA (peak)

60kA/2s

60kA/2s

- tertiary winding

kA RMS
kA (peak)

31.5kA/2s

31.5kA/2s

- pre-fault voltage

p.u.

1.05

1.05

2.12

Guaranteed losses

2.12.1

No-load losses at rated voltage and frequency, with rated voltage tap

kW

≤71.5

≤71.5

2.12.2

No-load losses at 110% of the rated voltage, at rated frequency and rated voltage tap

kW

≤87.8

≤130

2.12.3

No-load losses capitalized value

US $/kW

3000

3000

2.12.4

Tolerance to be applied to no-load losses
(in %  of the guaranteed value)

%

10

10

2.12.5

On-load losses at rated voltage and frequency, with rated voltage tap and ONAN rating:
- HV winding
- LV winding
- tertiary winding

At (165MVA)

kW
kW
kW

KW

-
-
-

≤276

-
-
-

≤360

2.12.6

On-load losses  capitalized value

US $/kW

3000

3000

2.12.7

Tolerance to be applied to total losses (in %of the guaranteed value) for all the windings

%

10

10

2.12.8

2.12.9

Auxiliaries consumption at second stage of cooling (ONAN/ONAF)

Efficiency at 75deg at:

         unity P.F.

1. 100%  loading
2. 75%     loading
3. 50%     loading

0.8  P.F.

1.    100%

2.     75%

3.     50%

kW

      %

      %

      %

      %

      %

      %

-

≥99.7

≥99.6

-

99.73%

99.67%

2.13

Highest voltage for equipment:

- HV winding
- LV winding
- tertiary winding

kV
kV
kV

362
145
36

362

145

36

2.14

2.14.1

Rated insulation level:

Short time power frequency withstand:

- HV winding - line terminal
- LV winding - line terminal 
- neutral
- tertiary winding
- control wiring

kV RMS
kV RMS
kV RMS
kV RMS
kV RMS

650
275
38
70
2.0

510

275

38

70

-

2.14.2

Basic impulse level:

- HV winding - line terminal
- LV winding - line terminal
- neutral point
- tertiary winding

kV (peak)
kV (peak)
kV (peak)
kV (peak)

1050
650
125
145

1050

650

125

145

2.14.3

Basic switching surge level HV winding

( Line-to-Ground/Line-to-Line )

kV (peak)

850/1275

850/-

2.15

Temperature rise limits at maximum power output at ONAN and ONAF ratings and at lowest voltage tap and corresponding voltage:

-    top oil at ambient temperature

-    average copper at ambient temperature

-    hot spot windings

K 
K

K

45
55

68

45

55

68

2.16

Permissible overload in emergency cases:

- Maximum continuous overload based on highest winding temperature which exceeds by 5^oC the guaranteed limit

MVA

- Maximum continuous over voltage based on the specified temperature rise limits (in % of the rated voltage)

%

5

5

2.17

Oil:

- manufacturer
- type
- data sheet attached

-
-
-

NYNAS NYTRO 10XN (Inhibited) (IEC 60296)

-
-
-

NYNAS NYTRO 10XN (Inhibited) (IEC 60296)

2.18

Bushings

2.18.1

HV bushings:

- class
- manufacturer
- type designation
- rated current
- short circuit withstand
- basic insulation level
- basic switching surge level
- power frequency withstand for 1 minute
- connectors for
- creepage distance

kV
-
-
A
kA RMS
kV (peak)
kV (peak)
kV RMS
-
mm/kV

420
-
-
2500
100kA/2s
1425
1175
650
TBA
31

550

XD

BRDLW

2500

100kA/2s

1800

1300

790
TBA

31

2.18.2

LV bushings:

- class
- manufacturer
- type designation
- rated current
- short circuit withstand
- basic insulation level
- power frequency withstand for 1 minute
- connectors for
- creepage distance

kV
-
-
A
kA RMS
kV (peak)
kV RMS
-
mm/kV

145
-
-
750
60kA/2s
750
325
TBA
31

170

XD

BRDLW

1250

60kA/2s

750

340

TBA
31

2.18.3

Tertiary bushings:

- class
- manufacturer
- type designation
- rated current
- short circuit withstand
- basic insulation level
- power frequency withstand for 1 minute
- connectors for
- creepage distance

kV
-
-
A
kA RMS
kV (peak)
kV RMS
-
mm/kV

36
-
-
-
-
170
70
TBA
31

40.5

XD

BRDLW

1600

200

80

TBA
31

2.18.4

Neutral bushings:

- class
- manufacturer
- type designation
- rated current
- short circuit withstand
- basic insulation level
- power frequency withstand for 1 minute
- connectors for
- creepage distance

kV
-
-
A
kA RMS
kV (peak)
kV RMS

mm/kV

170
-
-
1250A
50kA/2s
750
325
-
31

170

XD

BRDLW

1250

50kA/2s

750

340

-
31

2.19

2.19.1

Design data:

Maximum flux density in the columns at:

- rated voltage
- 105% of the rated voltage

tesla
tesla

1.5
1.58

1.7

1.79

2.19.2

Maximum flux density in the yokes at:

- rated voltage
- 105% of the rated voltage

tesla
tesla

1.5
1.58

1.7

1.79

2.19.3

Maximum current density at ONAN rated power and rated voltage tap:

- HV winding
- LV winding
-Tertiary winding

A/mm²
A/mm²
A/mm²

       1.4-1.9

         2.2-2.9
              TP

1.9

2.5

2.19.4

Winding resistance:

- HV winding
- LV winding
-Tertiary winding

ohms
ohms
ohms

-
-
-

0.64

0.20

0.10

2.19.5

Voltage regulation at ONAN rating and rated   voltage tap (in % of the rated voltage):

- With unity power factor:
. LV side
. TV side

%
%

-
-

-
-

- With 0.9 power factor (lagging):
. LV side
. TV side

%
%

-
-

-
-

- With 0.8 power factor (lagging):
. LV side
. TV side

%
%

-
-

-
-

2.19.6

Primary exciting current, LV side:

- at 0.01 second
- at 0.1 second

kA
kA

-
-

-
-

2.19.7

Core silicon steel grade

 (core or shell)

-

CORE:(23M-OH /23ZDKH)

CORE

2.19.8

Winding conductor

-

Copper

Copper

2.20

Audible noise level

- Voltage in percent of rated value
- ONAN rating
- ONAF maximum rating

%
dB(A)
dB(A)

105
≤83 max
≤86 max

105

≤83 max()
≤86 max()
 

2.21

Radio Interference Voltage at 0.5 MHz
as per IEC 694

mV

≤2500 max
 

≤2500 max
 

3.0

Weights and dimensions

3.1

Total weight of transformer, equipped for service

Kg

-

236000

3.2

Weight:

- oil
- core and coil assembling
- tank and accessories
- net copper
- net core steel

kg
kg
kg
kg
kg

-
-
-
-
-

74000

98000

64000

34000

55000

3.3

Maximum shipping weight (heaviest item)

Kg

-

132000()

3.4

Height from foundation to:

- highest point of HV bushing
- highest point of tank
- highest point of conservator tank
- highest point of lifting hook to remove
  core and coil assembly

mm
mm
mm

mm

-
-

-

8800

3300

6900

8500

3.5

Outline  dimensions:

- length
- width

mm
mm

-
-

14600

7200

3.6

Layout drawing n^o

-

To be enclosed
with bid

3.7

Maximum shipping dimensions of tank:

- outside height
- outside width
- outside length

mm
mm
mm

-
-
-

10200

3800

3300

3.8

Transportation drawing n^o

-

To be enclosed
with bid

4.0

On-load tap changer

4.1

Manufacturer

-

MR REINHAUSEN

GERMANY

MR

GERMANY

4.2

Type

-

Oil

Oil

4.3

Rated through current

A

-

600

4.4

Number of steps

-

17

17

4.5

Short circuit withstand

kA RMS

8

8

4.6

BIL to ground

kV (peak)

750

750

4.7

Power frequency withstand voltage for 1 minute

kV RMS

325

325

4.8

Tap transition device

-

Jansen

4.9

Parallel automatic controller

-

Master-follower

Master-follower

5.0

Current transformer incorporated into the power transformer

5.1

5.1.1

5.1.2

5.1.3

CT in HV phase bushings:

 Number of cores per bushing

Primary rated current

Secondary rated current

-

A

A

2

400

1

2

400

1

5.1.4

Accuracy class:

-        protection

-         metering

-
-

To be coordinated

(1)5P20, 20 VA
(1)CL0.2, 20 VA

(1)5P20, 20 VA
(1)CL0.2, 20 VA

5.1.5

Ratio

-

400:1

400/1

5.1.6

Short circuit withstand

A

100kA/2s

-

5.1.7

Continuous secondary current thermal limit

A

-

-

5.2

CT in LV phase bushings:

5.2.1

Number of cores per bushing

-

2

2

5.2.2

Primary rated current

A

800

800

5.2.3

Secondary rated current

A

1

1

5.2.4

Accuracy class:

- protection

- metering

-

-

-

To be coordinated

(1) 5P20, 20 VA,

(1)CL0.2, 20 VA

(1) 5P20, 20 VA,

(1)CL0.2, 20 VA

5.2.5

Ratio

-

800/1

800/1

5.2.6

Short-circuit withstand

A

60kA/2s

-

5.2.7

Continuous secondary current (thermal limit)

A

-

-

5.3

5.3.1

5.3.2

5.3.3

5.3.4

CT in LV neutral bushing:

Number of cores per bushing

Primary rated current

Secondary rated current

Accuracy class - protection (to be coordinated)

-

A

A

-

2

800

1

(1) 5P20, 20 VA

2

800

1

(1) 5P20, 20 VA

5.3.5

Ratio

-

800:1 / 400:1

400-800/1

5.3.6

Short circuit withstand

A

-

-

5.3.7

Continuous secondary current (thermal limit)

A

-

-

5.4

5.4.1

5.4.2

5.4.3

5.4.4

CT in tertiary phase bushings:

Number of cores per bushing

Primary rated current

Secondary rated current

Accuracy class:

- protection

-

A

A

-

2

800

1

(2) 5P20, 20VA

2

800

1

(2) 5P20, 20VA

5.4.5

Ratio

-

800:1

800/1

5.4.6

Short circuit withstand

A

-

-

5.4.7

Continuous secondary current (thermal limit)

A

-

-

6.0

Layout

6.1

Primary winding bushings

-

(3) Long. Axis

Long. Axis

6.2

Secondary winding bushings

-

(3) Long. Axis (opposite to HV)

Long. Axis

(opposite to HV)

6.3

Tertiary winding bushings

-

(3) Transv. Wall in junction box

Transv. Wall in junction box

6.4

Conservator tank

-

Transv. Axis

6.5

Tap changer

-

Transv. Axis

6.6

Control cabinet

-

-

6.7

Radiators

-

-

6.8

Terminal block connection drawing

-

As per enclosed drawings

7.0

Standards

Latest revision of IEC 60296

Latest revision of IEC 60296

7.1

Manufacturing

-

IEC 60044
IEC 60076
IEC 60137
IEC 60214
IEC 60529
IEC 60815
IEC 60947
NEMA TR-1

IEC 60044
IEC 60076
IEC 60137
IEC 60214
IEC 60529
IEC 60815
IEC 60947
NEMA TR-1

7.2

Quality assurance

-

ISO------------

ISO------------

8.0

Installation

-

Outdoor in substation yard

Outdoor in substation yard

9.0

Type test report

Copy of type test for similar transformer to be included with the bid

Copy of type test for similar transformer to be included with the bid