Transformer Stations with Programmable Logic Controllers

THE PRODUCT

INS transformer stations of power of 400 kVA and 630 kVA for the voltages 6 kV/525 V, 10 kV/525 V, 10-6 kV/525 V

Application

INS transformer stations are complete substations consisting of cut-off switch, power transformer, switchgear and protective equipment. All is placed in IP54 housing, fitted for easy transport and installation. They are designed to power electrical machines, devices and electrical networks with rated voltage 3 x 525 V, 50 Hz, operating in IT configuration and electrical installation of the voltage of 3 x 230 V, operating in IT configuration in underground headings of mining plants. All outputs are in separate chambers and they are equipped with cut-off switches , fuses and contactors.

INS stations, depending on their version, may be optionally equipped with:

  • three or four 500 V outputs with the current of 400 A,
  • transformer of various power (400 kVA or 630 kVA),
  • transformer with various upper-voltage sides (6 kV or 10 kV or 10kV and 6 kV),
  • systems enabling remote control of the outputs,
  • MiCOM P211 digital engine protections for engines at main outputs,
  • measurement of load current of main outputs,
  • analyser of parameters of whole station network,
  • overvoltage limiters at 6 kV side or 10 kV side,
  • devices fitted for feeding the converter systems.

In lower-voltage chambers there are:

  • short-circuit and overload protection,
  • relays for control of continuity of earthing,
  • central leakage protection,
  • central leakage protection 230V,
  • control gear.

Technical and operating parameters:

  • Rated power 250 kVA, 400 kVA or 630 kVA
  • Input voltage 6 kV, 10 kV or 10kV and 6 kV
  • Frequency 50 Hz
  • Voltage control -5%,0,+5%
  • Base output voltage 525 V or 1050V
  • Number of base outputs 500 V 3 or 4
  • Auxiliary outputs voltage 230 V
  • Number of auxiliary outputs 230 V 3
  • SELV auxiliary voltage 24 V
  • Overvoltage limiters 6 kV or 10 kV
  • Housing protection factor IP 54

Overall dimensions:

Station type INM/3 INSp/3 INSpa/3 INSp/4 INSpa/4
Length: 2190 mm 2380 mm 2570 mm
Width: 1250 mm 1380 mm 1450 mm
Height: 1600 mm 1800 mm 1760 mm
Height without cable entries: 1470 mm 1660 mm 1620 mm
Weight for 250 kVA stations: 2200 kg
Weight for 400 kVA stations: approx. 3200 kg approx .3500 kg
Weight for 630 kVA stations: approx. 3900 kg approx. 4200 kg

Operating conditions:

  • Ambient temperature from -10°C up to + 40°C
  • Relative humidity 95 % in temp. 40°C
  • Network working voltage fluctuations 0,85÷1,2Un
  • Corrosive power level C
    Max relative humidity at 25°C or at lower temperatures with steam condensation 100% .

Contact: Electrotechnics Dep.
phone 48 76 74-64-158. fax 48 76 74-64-157
mail: te@inova.pl
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