ODRA – Medium voltage switchgear

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Medium voltage air insulated metal-clad switchgear ODRA are designed for primary distribution of AC three-phase electric energy with a rated frequency of 50/60 Hz and rated voltage up to 36 (40,5 kV) in power plants, distribution networks of public utilities and industrial power engineering sectors. Switchgear may be executed either in free standing or against wall setup. The ODRA switchgear may be applied for operation in both standards and special conditions.

The construction is made from steel plates covered by aluminum-zinc coating. Side covers of the external panels and doors are covered with polyester powder paint, which ensures excellent protection from corrosion.
The color is adapted to the Customer needs. Switchgears are designed for installation in electrical rooms.

Switchgear ODRA were type tested and come with the certificates verifying their rated parameters and admitting them for use at power distribution plants, power stations, industrial plants and other facilities generating, transmitting or using electric energy.

 

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ODRA construction with withdrawal element.

A – Bus-bar compartment;

B – withdrawal element compartment;

C – cable connection compartment;

D – secondary wiring compartment;

On the trolley can be installed circuit breaker, disconnector, contactor, instrument voltage transformers.

 

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Technical data

ODRA 12
ODRA 17
ODRA 24
ODRA 36(40,5)

 

 

Rated insulation voltage kV up to 12 up to 17,5 up to 24 up to 36/40,5*
Rated lightning impulse withstand voltage (1,2/50μs) kV 75/85 95/110 125/145 170/190*
Rated power frequency withstand voltage kV 28/32

42/48*

38/45 50/60 70/95*
Rated frequency Hz 50
Rated continuous current A up to 3150 up to 2500 up to 2000 up to 1250
Rated short time withstand current up to 31,5/3s

up to 40/1s

up to 31,5/3s up to 25/3s
Rated peak withstand current up to 100 up to 80 up to 63
Withstand for internal arcing fault up to 40/1s up to 31,5/1s up to 25/1s
Degree of protection IP 41/IP4X
IAC classification (class of resistance to internal arc) AFLR
PM/PI classification (class of partitions) PM
LSC classification (class of compartment accessibility) LSC2B
Weight kg 550-1200 900-1600
Bus-bar system single
Overall dimensions**) Width mm 600-1000 750-1000 1200,1600
Depth mm 1250,1450 1430 1950
Height mm 2150,2250 2300 2500
Standards PN-EN 62271-200:2007PN-EN 62271-1:2009

ГОСТ 14693:1990

ГОСТ 1516.3:1996

*) required according to ГОСТ
**) without external guards, covers, doors

 

 

Environmental operating conditions
Switchgear ODRA with installed equipment are adapted for indoor operation under normal conditions, with the following environmental conditions:

Installation altitude above sea level
to 1000 m
Ambient temperature:
peak short-time
+40°C
maximum average during the day
+35°C
maximum average yearly
+20°C
minimum sustained
-5°C
Air relative humidity at +40°C:
during the start up
max. 80%
during standstill or operation
max. 95%

 

 

 

 

 

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