nhp medium voltage transformers

NHP Medium Voltage Transformers

MEDIUM VOLTAGE POWER

Customised transformer solutions built to last

Sales 1300 NHP NHP nhp.com.au Sales 0800 NHP NHP nhp-nz.comNHP Electrical Engineering Products Pty Ltd

MVSOLUTIONS

MV

WHy NHP? We’re easy To do busiNess WiTH.At NHP we’re solely committed to serving the needs of our customers in the industrial electrical industry. From concept design through to installation and after sales service, we are confident we have the experience and expertise to exceed your expectations and ensure you get the best result for your project. How? Well, put simply, we’re easy to do business with. Combining Partnerships, Agility, Knowledge and Scalability, NHP offer the Australasian market quality, around-the- clock service that forms the ultimate choice in our industry.

ParTNersHiPs:When you choose NHP you gain a valuable industry partner. You gain access to an exclusive network of quality global suppliers who together with NHP’s 50+ branch and regional locations across Australia and New Zealand, can achieve an engineered solution for your medium voltage application.

Providing the perfect balance of knowledge and experience, a partnership with NHP promises to last the life of current and future projects, working together with you to offer complete trust, assurance and peace of mind.

If it’s Medium Voltage, partner with NHP.

agiliTy: At NHP we understand your Medium Voltage application needs and know that these needs can often change throughout the life of a project. But with a seamless combination of local and technical support and a network of global suppliers, NHP have the agility to provide real-time solutions that are backed by around the clock service and support for not only the life of a project but any future needs as well.

Don’t be caught waiting. Choose NHP and get the very best in Medium Voltage solutions – day in, day out, right where you need them.

KNoWledge:If your Medium Voltage application demands a specialist team of trained project management, design and engineering professionals, then NHP is the ultimate choice. Bringing together over 40 years of electrical industry experience, NHP’s dedicated Medium Voltage project team promises to deliver customiseable solutions from concept design through to installation and project management.

We know that you have a range needs and that these needs can change but calling on our vast industry experience we know how to meet them. When it comes to Medium Voltage, look no further than NHP.

scalabiliTy:With all the scale of a large multi-national company, NHP maintain a premium level of customer service and attention to detail no matter how big or small your Medium Voltage project.

Be it our 1000+ expert staff, our 50+ branch and regional locations, or our extensive network of global suppliers, when you deal with NHP you will receive all of this combined knowledge and expertise in an ‘easy to do business with’ solutions with a local focus!

easy To do busiNess WiTH

50kVA - 20MVA, with voltages up to 36kV Customised cast resin transformers.

50kVA - 30MVA, with voltages up to 145kVHermitically sealed and conservator type oil immersed transformers. Available with mineral, synthetic and ester based oils.

oil immersed Transformers

cast resin Transformers

TABLE OF CONTENTS

NHP Medium Voltage Transformer Overview .................................................... 5 Quality & Characteristics ................................................................................................ 6Section 1: Cast Resin Transformers ........................................................................... 7Section 2: Oil Immersed Transformers .................................................................16Section 3: Reactors ..........................................................................................................22

6000A with insulation classes up to 36kV Dry and oil immersed types.

reactors

NHP MEDIUM VOLTAGE TRANSFORMER OVERVIEw

PAGE 7

PAGE 16

PAGE 22

6 7

SEcTION 1: cAST RESIN TRANSFORMERS

NHP Medium Voltage cast resin transformers offer an exclusive customised design and are ideal for installation in various applications that range from the production to distribution of electricity. Our cast resin transformers range from 50kVA to 20MVA with voltages up to 36kV.

Cast resin transformers offer a safer and easier solution for customers as there is lower fire potential and reduction in maintenance requirements.

Reduced partial discharges obtained thanks to an innovative casting process

Longer life due to lower partial discharge levels on windings

High resistance to short circuit events thanks to the application of fibre glass on windings

Low losses compared to traditional transformers

Tailored design in order to increase the cooling on the windings

Reduced dimensions through design aimed to optimise materials and satisfy with site requirements

Features:

TRAFO ELETTRO PROFILE

NHP has selected Trafo Elettro as their preferred supplier of transformers. Trafo Elettro is a tried and proven manufacturer of quality cast resin transformers ideal for medium voltage applications since 1969. Trafo Elettro can provide custom made transformers to specifications through their customer’s quality product range.

QUALITY & cHARAcTERISTIcS

Certified: Certification to UNI EN ISO 14001:2004 ensures NHP Electrical Engineering Products Pty Ltd can provide the customer with the highest quality products.Testing: All transformers undergo a series of tests using cutting edge equipment to ensure compliance with all functional parameters.Design and Development: Our team of experienced and expert technicians have developed the NHP Medium Voltage Transformer range and continue to research new solutions to ensure they remain at the forefront of the industry. Advanced technology allows the planning and tracking of all components at every stage of production. Globally recognised products.

8 9

cAST RESIN TRANSFORMERS PRODUcT FEATURES APPLIcATIONS

As the high voltage windings are cast, the transformers are totally screened against moisture, dust and industrial waste common in heavily polluted environments. The result is greater installation flexibility and maintenance-free life-cycle.Due to the flame-resistant and self-extinguishing materials used, the NHP Medium Voltage cast resin transformers are particularly suitable for special applications, such as:• Rail• Data centres• Hospitals/health• Mining• Power utilities

Design of clamps that allow a greater aeration and cooling of windings

Off-load tap changer

Greater cooling surfaces

Channel for probesLow Voltage

Terminals 4 lifting eyebolt Provision for Medium Voltage surge arresters

Rating plate can be placed as required

Windings supports fixedto the lower clamps

2 earthing terminals

Holes on the trolley for transformer fastening

during transport

Vacuum casting process allows uniform distance

between windings

High Voltage Terminals

10 11

Environmental classes climatic classes Fire behaviour classes

E0 No condensation and pollution is negligible. Achieved in a clean, dry indoor installation

C1 Suitable for operation at ambient temperature not below -5° and storage to ambient temperature down to -25°

F0 No special fire risk except for the characteristics inherent in the design of the transformer. No special measures to limit flammability. Emission of toxic substances and opaque smoke shall be minimised.

E1 Occasional condensation can occur. Limited pollution is possible

C2 Suitable for operation, transport and storage at ambient temperature down to -25°

F1 Subject to fire hazard. Restricted flammability required. Emission of toxic substances and opaque smokes shall be minimised.

E2 Frequent condensation or heavy pollution or combination of both

MANUFAcTURING FEATURES

Magnetic core

Manufactured with grain oriented low-loss laminations, insulated with carlyte, mitred type or step-lap, the magnetic core of the transformer results in the reduction of the sound level and no-load loses. This also guarantees high sturdiness and stability during movements and in the event of short-circuit stresses.

Low voltage windings

The low voltage windings consist of electrolytic aluminium foils, insulated by pre preg material, impregnated with “H” class epoxy resin and heat treated in an oven to form a compact unit which provides sufficient strength which can withstand short-circuit forces in the transformer. The low voltage terminals are produced with aluminium bars through automatic welding and fixed to the upper yoke clamping frame by suitable spacers. On request, it is also possible to manufacture copper windings (i.e. terminals arrangement for connection to busbars).

High Voltage windings

The high voltage windings are manufactured with overlapped coils in aluminium strips, connected in series, with rounded corners and insulated with polyester material films. Once the single winding is completed the entire coil is anchored by glass fiber net and after a suitable drying cycle, all windings are casted under vacuum with epoxy resin “F” class mixed with quartz and trihydrated alumina. Each production cycle is sampled with calorimetric analysis to test the vitreous transition. The adjustment points are obtained directly in the centre of the winding and the various positions are made through brass bridges.

All NHP Medium Voltage transformers are manufactured in accordance with AS 60076-11 standards.

cLIMATIc, ENVIRONMENTAL AND FIRE BEHAVIOUR cLASSES

E2 C2 F1E2 C2 F1

12 13

kVA 100 160 200 250 315 400 500 630 800 1000 1250 1600 2000

mm 1060 1160 1240 1160 1250 1310 1310 1360 1430 1500 1540 1640 1760mm 610 625 640 650 760 760 760 760 910 910 910 910 1220mm 1120 1200 1250 1370 1440 1480 1600 1600 1730 1780 1900 2060 2260mm 520 520 520 520 670 670 670 670 820 820 820 820 1070mm 100 100 100 125 125 125 125 125 125 125 150 150 200mm 40 40 40 40 40 40 40 40 40 40 60 60 70

kg 450 640 730 850 1050 1200 1450 1650 2000 2300 2700 3250 3850

L1 mm 1700 1700 1700 1800 1800 1800 2000 2000 2000 2250 2250 2250 2800W1 mm 1100 1100 1100 1150 1150 1150 1250 1250 1250 1350 1350 1350 1650H1 mm 1650 1650 1650 1880 1880 1880 2150 2150 2150 2450 2500 2500 2600I1 mm 520 520 520 670 670 670 670 670 670 820 820 820 1070

kg 280 280 280 315 315 315 370 370 370 450 450 450 550

mm 60 100mm 15 25mm / / / / / / 30 50mmmm

TRANSFORMER IP00

Power

L

W

H

I

D

T

Total weight

ENCLOSURE IP 21 - 31

Total weight

LV - HV TERMINALS

A 12080

TERMINALI MT / HV TERMINALS / NS ANSCHLUESSEN

M

15 25

1712

2040

Dimensions and weight not binding

TERMINALI BT / LV TERMINALS / OS ANSCHLUSSEN

C

Ø

3060

13

B30 50

2500 3150

1970 19701320 13202240 22701070 1070200 20070 70

4650 5350

2800 28001650 16502600 26001070 1070

550 550

TRANSFORMER IP00


LV - HV TERMINALS

120

Dat

a: 0

5-12

-201

2

TERMINALI MT / HV TERMINALS / NS ANSCHLUESSEN

Rev

. 01

1716


TERMINALI BT / LV TERMINALS / OS ANSCHLUSSEN

3060

Dimensions and weight are a guide only

7,2 / 20 / 60 kV

OIL IMMERSED TRANSFORMERS WITH NORMAL LOSSES Insulation levels 12 / 28 / 75 kV17,5 / 38 / 95 kV24 / 50 / 125 kV

kVA 50 100 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150

4/4 97.48 97.97 98.27 98.25 98.46 98.54 98.64 98.70 98.75 98.79 98.79 98.77 98.79 98.76 98.80 98.813/4 % 97.89 98.29 98.54 98.52 98.70 98.76 98.84 98.89 98.95 98.99 99.00 98.98 99.00 98.97 99.01 99.032/4 98.17 98.51 98.71 98.70 98.84 98.90 98.97 99.02 99.09 99.13 99.14 99.13 99.15 99.14 99.17 99.204/4 97.21 97.75 98.09 98.06 98.30 98.38 98.49 98.55 98.62 98.66 98.66 98.63 98.66 98.62 98.67 98.68

Efficiency 3/4 % 97.66 98.10 98.38 98.36 98.55 98.63 98.71 98.77 98.84 98.88 98.89 98.86 98.89 98.86 98.90 98.922/4 97.98 98.34 98.57 98.55 98.72 98.78 98.86 98.91 98.99 99.04 99.05 99.04 99.06 99.04 99.08 99.114/4 96.88 97.48 97.85 97.82 98.09 98.18 98.30 98.38 98.45 98.49 98.50 98.46 98.49 98.45 98.51 98.523/4 % 97.37 97.87 98.18 98.15 98.37 98.46 98.56 98.62 98.70 98.74 98.75 98.72 98.75 98.72 98.77 98.792/4 97.73 98.14 98.39 98.38 98.56 98.63 98.72 98.78 98.87 98.92 98.93 98.92 98.94 98.92 98.97 99.00

Cosfì = 1 4/4 2.256 1.815 1.538 1.569 1.372 1.310 1.223 1.174 1.246 1.224 1.224 1.254 1.237 1.274 1.234 1.238Voltage drop Cosfì = 0,95 4/4 3.164 2.827 2.604 2.629 2.467 2.416 2.343 2.301 3.000 2.982 2.982 3.008 2.993 3.025 2.990 2.993

Cosfì = 0,9 4/4 3.457 3.173 2.980 3.002 2.859 2.814 2.748 2.711 3.655 3.638 3.638 3.662 3.648 3.678 3.646 3.649Cosfì = 0,8 4/4 3.774 3.575 3.429 3.446 3.335 3.299 3.247 3.217 4.483 4.468 4.468 4.488 4.477 4.501 4.475 4.477

TES-‐OM

ELECTRICAL CHARACTERISTICS

32002100650W 320 460 570 1700930 14001100 1200 3800

13500 17000 220001750 2350 3000 3250

770 2600 4400

5500 6750 8400 105004600 335003900 26500W

4 6 6 64 6% 4 4 4 4 4 6 6

0.6 0.60.9 0.7% 2.5 2.3 2.0 1.8 1.6

68dBA 54 55 56 56 57 58 6053

1.4 1.3 1.3 1.2

62 67

68 70 71 81

6559

Load losses at 75°C

Impedance voltage

No load losses

Cosfì = 0,8

Sound power level

Cosfì = 1

Sound pressure level at 1 meter

18.0 18.0 17.0

63 64 65 66dBA

9.0 8.512.5 9.5 9.0

82 82 8367

12.0

0.02

Ie/In 16.0 15.0 14.5

0.03 0.04 0.050.02sec. 0.02 0.02 0.12Time costant Ie/In 0.09 0.100.060.06 0.10 0.100.08

77 7874

1.1 1.0

10.5

63 64

10.0

66

6 6

Power

%

Rush current

Cosfì = 0,9

18.0

No load current

kA 3.6 5.8 7.2Short circuit current 24.114.4 18.0 15.2 19.211.4 60.1 75.830.1 38.5 48.19.0

52

18.0

0.02

1.8

190

1100

4

2.6

Manufacturing according to StandardsEN 60076-1Data and characteristics are not bindingand can be changed without notice.

The a/m technical data are based on:Frequency 50 HzMax ambient temperature 40 °CTolerance according to EN 60076

IEC - CkEo / DIN - AA' The a/m technical data are based on: Frequency 50 Hz Max ambient temperature 40oC HV/LV insulating material F/F Winding over temperature 100oC Efficiency based on losses at 75oC Tolerance according to AS60076 Manufacturing according to standards AS60076.11 Data and characteristic are a guide only and can be changed without notice.

Ф

ФФФ

Ф

Ф

Ф

kVA 100 160 200 250 315 400 500 630 800 1000 1250 1600 2000

4/4 97.60 97.93 97.99 98.29 98.48 98.60 98.73 98.78 98.84 98.93 98.99 98.95 99.023/4 % 97.99 98.26 98.32 98.56 98.72 98.82 98.92 98.97 99.02 99.09 99.15 99.12 99.172/4 98.26 98.50 98.55 98.76 98.88 98.97 99.05 99.10 99.13 99.19 99.25 99.23 99.284/4 97.34 97.70 97.77 98.10 98.31 98.44 98.59 98.65 98.72 98.81 98.88 98.83 98.91

Efficiency 3/4 % 97.77 98.07 98.13 98.41 98.58 98.69 98.80 98.86 98.91 98.99 99.05 99.02 99.082/4 98.07 98.34 98.39 98.62 98.76 98.85 98.94 99.00 99.04 99.10 99.16 99.15 99.204/4 97.02 97.42 97.50 97.87 98.11 98.25 98.41 98.49 98.56 98.66 98.75 98.69 98.773/4 % 97.50 97.84 97.90 98.21 98.40 98.53 98.66 98.72 98.78 98.86 98.94 98.90 98.972/4 97.84 98.14 98.19 98.45 98.60 98.71 98.81 98.87 98.92 98.99 99.06 99.04 99.10

Cosfì = 1 4/4 2.258 1.976 1.915 1.649 1.473 1.373 1.254 1.206 1.150 1.076 1.056 1.147 1.081Voltage drop Cosfì = 0,95 4/4 3.860 3.626 3.575 3.350 3.198 3.111 3.008 2.966 2.916 2.851 2.989 3.227 3.169

Cosfì = 0,9 4/4 4.426 4.219 4.174 3.972 3.835 3.756 3.662 3.624 3.578 3.518 3.720 4.012 3.959Cosfì = 0,8 4/4 5.105 4.943 4.906 4.744 4.632 4.567 4.488 4.456 4.418 4.368 4.653 5.015 4.969


27.8 33.0 41.26.0 24.19.6 12.0 15.2 19.27.6kA 2.4 3.8 4.8Short circuit current

74

10.5

79

1.0

62

0.300.18

Power

0.20 0.250.160.140.11

73

11.5

5855

1.0

57

7500

6

%

Rush current

0.120.10sec. 0.09 0.09Time costant Ie/In

12.0 11.512.5

0.13

11.012.0

Cosfì = 0,9

0.10

11.0Ie/In 13.5 13.5 13.0 13.0 12.5

dBA

No load current

Sound pressure level at 1 meter dBA

%

No load losses

Cosfì = 0,8

Sound power level

Cosfì = 1


Impedance voltage


59 62 63 65 67 68 69 70 76

6154

1.3 1.2 1.2 1.1

71

46 49 50 52 53 53

1.8 1.7 1.5 1.5 1.4

6

0.9 0.9

776

60

% 6 6 6 6 6 66 6.5

9000 10300 12000 16500 18500

25501050

W 2600 3350 3900 4200 4650

10600 145004100 90004800

1850 2100

16800

760W 360

5500 6100

5400 6500 7800

3050890490 600 1250 1550650

W 2100 2900 3500 3700

HV/LV insulating materials F/F

Efficiency based on losses at 75 °C

Tolerance according to EN 60076


Winding over temperature 100 °C

The a/m technical data are based on:

Frequency 50 Hz

Max ambient temperature 40 °C

2500 3150

99.11 99.0999.25 99.2399.33 99.3399.01 98.9999.16 99.1599.26 99.2598.89 98.8699.06 99.0499.17 99.16

0.990 1.0203.087 3.1143.883 3.9084.905 4.926


51.6 65.0

10.5 10.5

0.35 0.40

81 82

7

0.8 0.7

7

64 65

28000

2450018700

21000

3700 4550

NOMINAL PRIMARY VOLTAGE 7.2kV 12kV

cAST RESIN TRANSFORMERS

TES-R TES-RO

OO

OO

OO

14 15

7,2 / 20 / 60 kV


kVA 50 100 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150

4/4 97.48 97.97 98.27 98.25 98.46 98.54 98.64 98.70 98.75 98.79 98.79 98.77 98.79 98.76 98.80 98.813/4 % 97.89 98.29 98.54 98.52 98.70 98.76 98.84 98.89 98.95 98.99 99.00 98.98 99.00 98.97 99.01 99.032/4 98.17 98.51 98.71 98.70 98.84 98.90 98.97 99.02 99.09 99.13 99.14 99.13 99.15 99.14 99.17 99.204/4 97.21 97.75 98.09 98.06 98.30 98.38 98.49 98.55 98.62 98.66 98.66 98.63 98.66 98.62 98.67 98.68

Efficiency 3/4 % 97.66 98.10 98.38 98.36 98.55 98.63 98.71 98.77 98.84 98.88 98.89 98.86 98.89 98.86 98.90 98.922/4 97.98 98.34 98.57 98.55 98.72 98.78 98.86 98.91 98.99 99.04 99.05 99.04 99.06 99.04 99.08 99.114/4 96.88 97.48 97.85 97.82 98.09 98.18 98.30 98.38 98.45 98.49 98.50 98.46 98.49 98.45 98.51 98.523/4 % 97.37 97.87 98.18 98.15 98.37 98.46 98.56 98.62 98.70 98.74 98.75 98.72 98.75 98.72 98.77 98.792/4 97.73 98.14 98.39 98.38 98.56 98.63 98.72 98.78 98.87 98.92 98.93 98.92 98.94 98.92 98.97 99.00


Cosfì = 0,9 4/4 3.457 3.173 2.980 3.002 2.859 2.814 2.748 2.711 3.655 3.638 3.638 3.662 3.648 3.678 3.646 3.649Cosfì = 0,8 4/4 3.774 3.575 3.429 3.446 3.335 3.299 3.247 3.217 4.483 4.468 4.468 4.488 4.477 4.501 4.475 4.477

TES-‐OM


32002100650W 320 460 570 1700930 14001100 1200 3800

13500 17000 220001750 2350 3000 3250

770 2600 4400

5500 6750 8400 105004600 335003900 26500W

4 6 6 64 6% 4 4 4 4 4 6 6

0.6 0.60.9 0.7% 2.5 2.3 2.0 1.8 1.6

68dBA 54 55 56 56 57 58 6053

1.4 1.3 1.3 1.2

62 67

68 70 71 81

6559


Impedance voltage

No load losses

Cosfì = 0,8

Sound power level

Cosfì = 1


18.0 18.0 17.0

63 64 65 66dBA

9.0 8.512.5 9.5 9.0

82 82 8367

12.0

0.02

Ie/In 16.0 15.0 14.5


77 7874

1.1 1.0

10.5

63 64

10.0

66

6 6

Power

%

Rush current

Cosfì = 0,9

18.0

No load current


52

18.0

0.02

1.8

190

1100

4

2.6



IEC - CkEo / DIN - AA'

Tensione di riferimento

CAST RESIN TRANSFORMERS Insulation levels

Isolationsreihe

kVA 100 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150

4/4 97.20 97.75 98.00 98.19 98.32 98.50 98.60 98.74 98.82 98.93 98.99 98.99 98.99 99.11 99.083/4 % 97.65 98.09 98.29 98.46 98.57 98.73 98.81 98.92 98.99 99.07 99.13 99.13 99.14 99.23 99.212/4 97.96 98.32 98.48 98.63 98.74 98.88 98.94 99.03 99.08 99.15 99.21 99.22 99.24 99.30 99.304/4 96.90 97.50 97.78 97.99 98.13 98.33 98.45 98.60 98.69 98.81 98.88 98.87 98.88 99.01 98.97

Efficiency 3/4 % 97.39 97.88 98.11 98.29 98.42 98.59 98.68 98.80 98.88 98.97 99.03 99.04 99.05 99.15 99.132/4 97.74 98.14 98.32 98.48 98.60 98.75 98.83 98.92 98.98 99.06 99.12 99.14 99.16 99.23 99.224/4 96.53 97.20 97.51 97.74 97.91 98.13 98.26 98.43 98.53 98.66 98.74 98.73 98.74 98.89 98.853/4 % 97.07 97.63 97.88 98.08 98.22 98.41 98.52 98.65 98.74 98.84 98.91 98.92 98.93 99.04 99.022/4 97.46 97.91 98.11 98.30 98.43 98.60 98.68 98.78 98.86 98.94 99.01 99.03 99.05 99.13 99.12

Cosfì = 1 4/4 2.600 2.099 1.866 1.708 1.598 1.447 1.353 1.222 1.150 1.051 1.040 1.085 1.091 0.978 1.013Voltage drop Cosfì = 0,95 4/4 4.136 3.728 3.534 3.400 3.306 3.176 3.094 2.980 2.916 2.829 2.975 3.172 3.178 3.077 3.108

Cosfì = 0,9 4/4 4.667 4.310 4.137 4.017 3.933 3.815 3.741 3.636 3.578 3.498 3.707 3.962 3.967 3.873 3.902Cosfì = 0,8 4/4 5.289 5.014 4.877 4.780 4.712 4.615 4.554 4.467 4.418 4.351 4.642 4.972 4.976 4.897 4.922

Data: 06-02-2012 Rev. 00

24 kV

34002400770W 430 590 690 21001000 1750

TES-‐R

1200 1450

CARATTERISTICHE ELETTRICHE - ELECTRICAL CHARACTERISTICS - ELEKTRISCHE CARATERISTICHE

4150

10400 13500 170002450 3100 3400 3850

890 2900 5100

5750 6700

5900 6600 7800 87505100

27500

24300

W 2850 3500 3900 4350 5100 7550

4500 18400W

9000 9950 11700 15400 19000 20900

6 6 6 66 6.5% 6 6 6 6 6 7 7

0.6 0.60.9 0.7% 2.5 2.3 2.0 1.8 1.6

68dBA 46 49 51 53 53 53 56

1.4 1.3 1.3 1.2

58 66

68 69 71 77

6255


Impedance voltage


No load losses

Cosfì = 0,8

Sound power level

Cosfì = 1


14.0 13.5 13.5

59 62 54 66dBA

11.0 11.012.5 11.5 11.0

79 81 8467

12.0

0.11

Ie/In 13.0 13.0 12.5


73 7472

1.1 1.0

12.0

59 61

11.5

63

7 7

Power

%

Rush current

Cosfì = 0,9

14.0

No load current


HV/LV insulating materials F/F

Efficiency based on losses at 75 °C

Tolerance according to EN 60076


Winding over temperature 100 °C

The a/m technical data are based on:

Frequency 50 Hz

Max ambient temperature 40 °C

kVA 100 160 200 250 315 400 500 630 800 1000 1250 1600 2000

mm 1060 1160 1240 1220 1250 1310 1360 1430 1500 1540 1640 1760 1830mm 610 650 640 760 760 760 760 760 910 910 910 910 1220mm 1140 1220 1230 1380 1430 1480 1580 1620 1740 1790 1920 2080 2260mm 520 520 520 670 670 670 670 670 820 820 820 820 1070mm 100 100 100 125 125 125 125 125 125 125 150 150 200mm 40 40 40 40 40 40 40 40 40 40 60 60 70

kg 550 700 850 950 1100 1300 1500 1800 2130 2550 2950 3560 4000

L1 mm 1700 1700 1700 1800 1800 1800 2000 2000 2000 2250 2250 2250 2800W1 mm 1100 1100 1100 1150 1150 1150 1250 1250 1250 1350 1350 1350 1650H1 mm 1650 1650 1650 1880 1880 1880 2150 2150 2150 2450 2500 2500 2700I1 mm 520 520 520 670 670 670 670 670 820 820 820 820 1070

kg 280 280 280 315 315 315 370 370 370 450 450 450 550

mm 60 100mm 15 25mm / / / / / / 30 50mmmm

TRANSFORMER IP00

L

Power

W

H

I

D

T

Total weight

20


Total weight

LV - HV TERMINALS

A 12030 50 80

13M

B 30C 60

15 25

HV TERMINALS

40Ø 17

12


LV TERMINALS

2500 3150

1970 21501320 13202250 22701070 1070200 20070 70

4950 5750

2800 28001650 16502600 26001070 1070

550 550

TRANSFORMER IP00


LV - HV TERMINALS

1203060

Rev

. 00

Dat

a: 0

6-02

-201

2

HV TERMINALS

1716


LV TERMINALS

The a/m technical data are based on: Frequency 50 Hz Max ambient temperature 40oC HV/LV insulating material F/F Winding over temperature 100oC Efficiency based on losses at 75oC Tolerance according to AS60076 Manufacturing according to standards AS60076.11 Data and characteristic are a guide only and can be changed without notice.

Dimensions and weight are a guide only

cAST RESIN TRANSFORMERS

NOMINAL PRIMARY VOLTAGE 24kV

OO

OO

OO

O

TES-R TES-R

16 17

SEcTION 2: OIL IMMERSED TRANSFORMERS

NHP Medium Voltage oil immersed transformers range from 50kVA to 30 MVA with voltages up to 145kV. The traditional oil transformers are available with oil conservator or hermetically sealed type with integral fins. As per customer’s request, the transformer can also be equipped with special control and safety devices with the use of biodegradable oils. Customer requirements for painting and specific coatings (i.e. zinc coating and metallization) can also be met.

Features:

OIL IMMERSED TRANSFORMERS PRODUcT FEATURES

Easy to install

High resistance to short circuit forces, thanks to the application of diamond dotted insulation paper on the windings

Suitably positioned accessories to simplify the maintenance operation without additional equipment

Accessories properly wired with special sheathing and with identification numbers for easy installation and maintenance

Special painting with eco-friendly products

Maintenance requirement over time is minimal and simple

Separate boxes for high voltage and low voltage

Large sealed covers that facilitate easy connection and inspection

Freely positioned identification plate

Windings with special diamond dotted presspaper

Auxiliary Terminal Box

Cooling fins with reinforcements to guarantee safe transport

Filter press and drain valves to avoid long connection distances

Accessible positioning of conservator drains, dryers and valve at accessible height enables easy maintenance services and discharge operations

Cable protection with armoured sheathing

Terminals and cables (including accessories) with identification numbers

Ground terminals for each accessory marked with yellow and green cables

Accessories with numbered cables

18 19

APPLIcATIONS

Oil immersed transformers can be installed indoor or outdoor and are suitable for every type of application including:• Rail• Data centres• Hospitals• Mining• Power utilities

They can also be installed in areas where there is risk of fire with the use of nonflammable oils. Oil immersed transformers from NHP can also be installed in highly polluted areas, thanks to an external coating that has been especially adapted for any type of atmospheric condition.

Magnetic coreManufactured with grain oriented low-loss laminations, insulated with carlyte, mitred type or step-lap, the magnetic core of the transformers results in the reduction of the sound level and low no-load losses. This also guarantees high sturdiness and stability losses during movements and in the event of short-circuit stresses.

Low voltage windingsThe low voltage windings are produced by electrolytic aluminum or copper foils, insulated with adequate thermal class material. This characteristic makes the winding protected and resistant to the high short-circuit forces. The connection terminals are made with aluminium or copper bars through automatic welding. High current is used as transposed conductors-cable with epoxy that combines an excellent mechanic resistance to the reduction of the losses caused by eddy currents.

High Voltage windingsHigh voltage windings are manufactured with electrolytic copper enameled wire or strip insulated with pure cellulose paper. Windings are compact and strong in design to withstand the eventual short circuit electrodynamics forces. For voltages higher than 72.5 kV, the windings are manufactured with an interleaved disc in order to optimize the distribution of the steep-front over voltages.

Tank and coverThe cover is bolted to the tank and the sealing is guaranteed by a suitable rubber gasket or sintered material. The tank for small transformers is supported by undulated sheets in order to allow the oil expansion and the dispersion of the heat generated by the transformer. Medium/large size transformers are manufactured with radiators that can be directly connected to the tank wall or with valve for intercepting the oil inside the radiator. All tanks are carefully tested during the construction phase in order to guarantee the body is resistant to fatigue cycles (expansion and shrinkage).

Insulating oilThe insulating oil contained in the transformer is dielectric mineral type PCB free, preventively treated and dried. The filling is done under-vacuum.Transformers filled with silicon oil or synthetic ester based of MIDEL type are also available (these fluids ensure a greater safety in case of fire because of their higher flammability point).

Painting and surface treatmentAll internal parts are sandblasted and painted with products insoluble to hot oil. The outside walls of the tank and cover are sandblasted and processed with a series of single-layer waster-soluble paint coating, suitable to withstand extreme environmental conditions.

MANUFAcTURING FEATURES

20 21

7,2 / 20 / 60 kV


kVA 50 100 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150

4/4 97.48 97.97 98.27 98.25 98.46 98.54 98.64 98.70 98.75 98.79 98.79 98.77 98.79 98.76 98.80 98.813/4 % 97.89 98.29 98.54 98.52 98.70 98.76 98.84 98.89 98.95 98.99 99.00 98.98 99.00 98.97 99.01 99.032/4 98.17 98.51 98.71 98.70 98.84 98.90 98.97 99.02 99.09 99.13 99.14 99.13 99.15 99.14 99.17 99.204/4 97.21 97.75 98.09 98.06 98.30 98.38 98.49 98.55 98.62 98.66 98.66 98.63 98.66 98.62 98.67 98.68

Efficiency 3/4 % 97.66 98.10 98.38 98.36 98.55 98.63 98.71 98.77 98.84 98.88 98.89 98.86 98.89 98.86 98.90 98.922/4 97.98 98.34 98.57 98.55 98.72 98.78 98.86 98.91 98.99 99.04 99.05 99.04 99.06 99.04 99.08 99.114/4 96.88 97.48 97.85 97.82 98.09 98.18 98.30 98.38 98.45 98.49 98.50 98.46 98.49 98.45 98.51 98.523/4 % 97.37 97.87 98.18 98.15 98.37 98.46 98.56 98.62 98.70 98.74 98.75 98.72 98.75 98.72 98.77 98.792/4 97.73 98.14 98.39 98.38 98.56 98.63 98.72 98.78 98.87 98.92 98.93 98.92 98.94 98.92 98.97 99.00


Cosfì = 0,9 4/4 3.457 3.173 2.980 3.002 2.859 2.814 2.748 2.711 3.655 3.638 3.638 3.662 3.648 3.678 3.646 3.649Cosfì = 0,8 4/4 3.774 3.575 3.429 3.446 3.335 3.299 3.247 3.217 4.483 4.468 4.468 4.488 4.477 4.501 4.475 4.477

TES-‐OM


32002100650W 320 460 570 1700930 14001100 1200 3800

13500 17000 220001750 2350 3000 3250

770 2600 4400

5500 6750 8400 105004600 335003900 26500W

4 6 6 64 6% 4 4 4 4 4 6 6

0.6 0.60.9 0.7% 2.5 2.3 2.0 1.8 1.6

68dBA 54 55 56 56 57 58 6053

1.4 1.3 1.3 1.2

62 67

68 70 71 81

6559


Impedance voltage

No load losses

Cosfì = 0,8

Sound power level

Cosfì = 1


18.0 18.0 17.0

63 64 65 66dBA

9.0 8.512.5 9.5 9.0

82 82 8367

12.0

0.02

Ie/In 16.0 15.0 14.5


77 7874

1.1 1.0

10.5

63 64

10.0

66

6 6

Power

%

Rush current

Cosfì = 0,9

18.0

No load current


52

18.0

0.02

1.8

190

1100

4

2.6




OIL IMMERSED TRANSFORMERS wITH NORMAL LOSSES

NOMINAL PRIMARY VOLTAGE 7.2kV 12kV 28kV 38kV 75kV 125kV

Tensione di riferimento 7,2 / 20 / 60 kV

OIL IMMERSED TRANSFORMERS WITH NORMAL LOSSES Insulation levels 12 / 28 / 75 kVIsolationsreihe 17,5 / 38 / 95 kV

24 / 50 / 125 kV

kVA 50 100 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150

mm 1165 1245 1290 1270 1280 1360 1515 1545 1615 1695 1675 1885 1835 1865 2035 2085mm 490 605 775 845 875 880 890 960 970 950 1050 1135 1165 1245 1296 1425mm 1180 1280 1360 1355 1435 1455 1510 1555 1610 1695 1715 1820 1880 2070 1985 2090

kg 90 130 155 165 180 215 240 275 330 410 440 550 605 600 675 775 90 130 155 165 180 215 240 275 330 410 440 550 605 600 675 775

kg 500 600 750 850 950 1150 1250 1450 1700 2050 2350 2800 3300 3600 4150 4800 500 600 750 850 950 1150 1250 1450 1700 2050 2350 2800 3300 3600 4150 4800

mm 870 950 920 900 910 990 1450 1500 1570 1620 1650 1860 1860 1920 2100 2200mm 485 615 650 845 875 880 890 960 970 950 1050 1135 1165 1245 1296 1425mm 1060 1160 1220 1215 1295 1315 1370 1415 1470 1535 1575 1640 1740 1930 1845 1950 85 120 145 155 170 205 230 260 315 390 420 525 580 575 645 740

kg 85 120 145 155 170 205 230 260 315 390 420 525 580 575 645 740 490 590 740 840 940 1130 1230 1430 1670 2010 2310 2750 3240 3530 4070 4710

kg 490 590 740 840 940 1130 1230 1430 1670 2010 2310 2750 3240 3530 4070 4710

mm 520 520 520 520 670 670 670 670 670 820 820 820 820 1070 1070 1070mm 100 100 100 100 100 125 125 125 125 125 125 150 150 200 200 200mm 40 40 40 40 40 40 40 40 40 40 40 60 60 70 70 70

Fig. 9 Fig. 10Fig. 8 Fig. 8

Fig. 1


Fig. 8 Fig. 9 Fig. 10

Fig. 4

Data: 29-01-2013 Rev. 02

1 kV

/ 20

00A

Power

10 k

V / 2

50A

Fig. 1Fig. 3

Fig. 4

10 k

V / 6

30A

1 kV

/ 25

0A

1 kV

/ 63

0A

1 kV

/ 31

50A

2 x

1 kV

/ 20

00A

Fig. 3Fig. 2

Fig. 7 Fig. 8Fig. 7 Fig. 8

Fig. 5

20 k

V / 2

50A

Fig. 6BT - LV - OS

LV - HV TERMINALS

MT - HV - NS 7,2 kV Fig. 212 - 17,5 - 24 kV

Fig. 6Fig. 5

COMMON DIMENSIONS

Oil weight

WH

Fig. 5 Fig. 6 Fig. 7

WITH CONSERVATOR

F

LHERMETIC

I

Total weight

L

Fig. 4

D

2 x

1 kV

/ 31

50A

Her

met

ic T

rans

form

er

1 kV

/ 10

00A

TES-‐OM

Oil weight

Total weight

WH

Tran

sfor

mer

with

con

serv

ator

N


The a/m technical data are based on frequency 50 Hz Max ambient temperature 40oC Tolerance according to AS60076 Manufacturing according to standards AS60076.1 Data and characteristic are a guide only and can be changed without notice.* Utility specifications

12 - 12*

* Utility specificationsDimensions and weight are a guide only

ФФФ

Ф

Ф

Ф

Ф

TES-OM TES-OM

22

SEcTION 3: REAcTORS

The NHP Medium Voltage reactors serves to limit the current in case of short-circuit in the system, for this reason reactors are installed in power plants or substations. The product range extends up to 6,000 A with insulation classes up to 36kV.

Two types of reactors are available:1. Dry type reactors for indoor applications2. Oil immersed reactors for outdoor application

customised Medium Voltage solutions built to last

NHP ELECTRICAL ENGINEERING PRODUCTS PTY LTD

Sales 1300 NHP NHP nhp.com.auSales 0800 NHP NHP nhp-nz.com

When you choose NHP for your Medium voltage application, you are choosing an exclusive network of global suppliers who can achieve an engineered solution.

Bringing together over 40 years of experience and expertise, NHP work together with you to form a partnership that lasts the life of current and future projects.

Our reliable and built to last Medium Voltage product range can also be customised to suit your specific design performance criteria. If it’s Medium Voltage, partner with NHP.

For further information on NHP’s Medium Voltage offering please scan the code.

NMVS

OLSA

DV 09

13

NHP Electrical Engineering Products Pty LtdA.B.N. 84 004 304 812

NMVTRANSC 09 13 © Copyright NHP 2013

AUSTRALIAnhp.com.au

SALES 1300 NHP NHP

FAX 1300 NHP FAX

VIcToRIAMelbourne 43-67 River Street Richmond VIC 3121 Tel +61 3 9429 2999

Laverton 104-106 William Angliss Drive Laverton North VIC 3026 Tel +61 3 9368 2901

Albury / Wodonga 847 Ramsden Drive Albury NSW 2640 Tel +61 2 6049 0600 Fax +61 3 6025 0592

Dandenong 40-42 Cyber Loop Dandenong South VIC 3175 Tel +61 3 8773 6400 Fax +61 3 8768 8522

TASMAnIAHobart 29B Lampton Ave Derwent Park TAS 7009 Tel +61 3 6228 9575 Fax +61 3 6228 9757

Launceston Unit 3 13-17 Merino Street Kings Meadows TAS 7249 Tel +61 3 6345 2600 Fax +61 3 6344 6324

neW SoUTH WALeSSydney 30-34 Day Street North Silverwater NSW 2128 Tel +61 2 9748 3444

newcastle 575 Maitland Road Mayfield West NSW 2304 Tel +61 2 4960 2220 Fax +61 2 4960 2203

Wollongong 34 Industrial Road Unanderra NSW 2526 Tel +61 2 4272 5763 Fax +61 2 4272 5957

AcTcanberra Unit1 187 Gladstone Street Fyshwick ACT 2609 Tel +61 2 6280 9888 Fax +61 2 6280 9588

WeSTeRn AUSTRALIAPerth 38 Belmont Ave Rivervale WA 6103 Tel +61 8 9277 1777

noRTHeRn TeRRIToRyDarwin 3 Steele Street Winnellie NT 0820 Tel +61 8 8947 2666 Fax +61 8 8947 2049

QUeenSLAnDBrisbane 16 Riverview Place Murarrie QLD 4172 Tel +61 7 3909 4999

Townsville 5 Leyland Street Garbutt QLD 4814 Tel +61 7 4779 0700 Fax +61 7 4775 1457

Rockhampton 1 Lawson Street Parkhurst QLD 4702 Tel +61 7 4927 2277 Fax +61 7 4922 2947

Toowoomba Cnr Carroll Street and Struan Court QLD 4350 Tel +61 7 4634 4799 Fax +61 7 4633 1796

cairns Unit 2 1 Bramp Close Portsmith QLD 4870 Tel +61 7 4035 6888 Fax +61 7 4035 6999

SoUTH AUSTRALIAAdelaide 36-38 Croydon Road Keswick SA 5035 Tel +61 8 8297 9055

neW ZeALAnDnhp-nz.com

SALES 0800 NHP NHP

FAX 0800 FAX NHP

PO Box 62-009 Sylvia Park Auckland 1644 New Zealand

Auckland 118a Carbine Road Mt Wellington 1060

Hamilton 78 Rostrevor Street Hamilton 3204

napier 126 Taradale Road Onekawa 4110

new Plymouth 2 Dean Place Waiwhakaiho 4312

Wellington 52 Victoria Street Lower Hutt 5010

christchurch 27 Iversen TerraceWaltham 8011

Dunedin 30 Fox StreetSouth Dunedin 9012

Scan the QR code to download the eCatalogues App

nhp medium voltage transformers

Documents