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সর্ব-শেষ হাল-নাগাদ: ১৫ জুলাই ২০১৮

কারিগরি বির্নিদেশ

 

 A. DISTRIBUTION TRANSFORMER THREE PHASE

  1. VOLTAGE RATING:
  1. HV WINDING        11KV
  2. LV WINDING        0.415KV
  1. NO OF PHASE                        THREE
  2. VECTOR GROUP Dyn-11
  3. TAP CHANGER                   +1´2.5%, 0, -3´2.5%
  4. FREQUENCY                       50Hz
  5. DUTY                                     CONTINUOUS
  6. COOLING SYSTEM             ONAN
  7. BASI INSULATION LEVEL 75KV
  8. TEMP RISE (ABOVE AMBIENT):
  1. FOR WINDING     65°c
  2. FOR TOP OIL        60°c
  1. STANDARD                          IEC60076
  2. MOUNTING          OUT DOOR/INDOOR NOT OVER 1000M  ABOVE SEA LEVEL

POWER RATING                          500/300/250/200/150/100/50KVA

ALSO IN ACCORDANCE WITH THE DESIRE & REQUIREMENT OF THE CUSTOMER

 

B. DISTRIBUTION TRANSFORMER  SINGLE PHASE

  1. VOLTAGE RATING:
  1. HV WINDING        6.35/11KV
  2. LV WINDING        0.24KV
  1. NO OF PHASE                        SINGLE
  2. VECTOR GROUP                  I/I-0
  3. FREQUENCY                       50Hz
  4. DUTY                                     CONTINUOUS
  5. COOLING SYSTEM             ONAN
  6. BASI INSULATION LEVEL    95KV
  7. TEMP RISE (ABOVE AMBIENT):
  1. FOR WINDING     65°c
  2. FOR TOP OIL        60°c
  1. STANDARD                          IEC 60076/ANSI
  2. MOUNTING               OUT DOOR/INDOOR NOT OVER 1000M  ABOVE SEA LEVEL

POWER RATING                          25/15/10/5KVA

 

C. DESCRIPTION & SPECIFICATION

LIGHTNING ARRESTER 11KV

Construction                            :

Single unit, basically consisting of gapless hermetically sealed in with non-linear characteristics with high energy capacity, all enclosed in porcelain housing.

Application                               :

Distribution transformer/Line/Cable Protection of heavy duty class.

Type of Arrester                      :

Metal Oxide (ZnO) Gapless

Installation                               :

Outdoor cross arm angle/channel/structure mounted.

Mounting                                  :

Pole Mounted steel bracket

Nominal system Voltage        :

11KV

Maximum system Voltage     :

12KV

System frequency                   :

50Hz

Rated Arrester Voltage          :

10.5KV (rms)

Maximum Continuous           : Operating Voltage              

8.4KV (rms)

Rated Arrester Current          :

5KA

Power frequency withstand : voltage of Lightning Arrester Housing, Dry & Wet

28KV

Standard                                   :

Performance, Design & Testing are in accordance to IEC-99-4.

 

D. DESCRIPTION & SPECIFICATION

DROP OUT FUSE CUT-OUT 11KV

Installation                                :

Outdoor mounted on cross-arm angle/channel structure

Application                                :

Protection of Distribution Transformer.

Type                                            :

Open drop out expulsion

Nominal rated Voltage             :

11KV

Maximum system Voltage       :

12KV

Frequency                                   :

50Hz

Continuous current rating        :

100/50/40/25/16A

Basic Insulation Level                :

75KV (To earth and between poles)

Power frequency withstand  :

35KV (To earth and between poles)

Fuse link continuous ratings :

As per Customer’s requirements.

Rated Interrupting capacity       :

8 KA (RMS)

Standard                                        :

Design, Manufacture, Testing and performance are in accordance with IEC 282-2.


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