دولة فلسطين
وزارة الحكم المحلي هيئة كهرباء جيوس والكفريات

PARTICULAR TECHNICAL SPECIFICATION FOR DISTRIBUTION TRANSFORMERS

NO

UNIT

Requirement

1 1

3 phase step down out door

2

Description Type and installation Rated
power Vector group ( winding
connection )

KVA

400 KVA

3 3

Dyn11 , neutral insulated and brought
out

4

Frequency

Hz

50

5

Rated voltage primary

KV

33

6

Rated voltage secondary

KV

0.4

7

Service

continuous

8

%

4

9

( -4 + 3 2.5 )

7 tapping

Impedance Tap changer position
Primary winding Secondary winding

10

cu

copper

11

cu

copper

12

Cooling

Natural cooling ( ONAN )

13

IEC standard and Iso

Must comply with the latest amendments

14

Insulator ( bushings )

hard porcelain / brown
Silca - gill breather

15

Dehaydrating breath

16

yes

Diagram and name
plate Oil filling opening

17

yes

18

Oil drain valve

yes

19

2 grounding terminals

yes

20

Oil level indicator

yes

21

Lifting lugs

yes

22

Test certificate

yes

23

yes

Safety valve over pressure relief device Name of manufacturer
Country of orgin

24

must be mentioned

25

must be mentioned

26

Guarantee and performance guarantee

Must confirm that the transformer garanteed
against all defects arising from fault design , materials , work man ship for
12 months from composition and the tenderer responsible
for any loss or damage to the final
destination must be mentioned

2018

27 Year of manufacturing 28
Thermometer

yes

29

Terminals connection
High voltage

fully insulated with
sealed end

30

busbars with hols

Terminals connection for
low voltage

31

Over load capacity

%

110

32

Hermetically sealed

yes

Maintainable

yes

33 34

Oil tank

yes

رئيس هيئة كهرباء جيوس والكفريات
صالح قاسم أبو أركان