- DC Rating of Rectifier unit:146V/625A
- Nominal AC input Voltage: 415Vac ±10%, 50Hz ±3%, 3φ3W
- Ambient Condition :45°C Max.
- Humidity:<90%RH
- Rated Output Power:91.25KW
Railways
Industrial
Industrial
- A harmonic filter is used to eliminate the harmonic distortion caused by appliances. Harmonics are currents and Voltages that are continuous multiples of the fundamental frequency of 50Hz such as 100 Hz ( 2nd harmonic) and 250 Hz ( 5th harmonic)
- An increasing number of loads are non- linear, introducing harmonics into the power gird and thus significantly impairing the power quality. An active harmonic filter that effectively reduces the unwanted harmonics.
- Active power factor correction also markedly diminishes total harmonics, automatically corrects for AC input voltage, and is capable of a full range of input voltage. Since active PFC is the more complex method of Power Factor Correction, it is more expensive to produce an Active PFC power supply than PFC. Moreover, PFC has improved the power factor, But PFC is itself generating harmonic.
- Harmonics are caused by non- linear loads, that is loads that draw a non – sinusoidal current from a sinusoidal voltage source. Some examples of harmonic producing loads are electric arc furnaces, static VAR compensators, inverters, DC converters, switch-mode power supplies, and AC or DC motor drives.
- Connection Method: 3 phase, 4 wire, 50 /60 Hz ±5%
- The aim of this document is to brief the technical description and necessity of the mobile battery charging unit of SSK Class Batteries (Type-II) MRLC Project and Scorpene class Submarine Batteries (Type-IV) of Project-75.
- The main function of said unit is to charge batteries of propulsion system of the submarine.
- Rating: 4.0 kW to 70 kW
- Output Current type I: 6.6 A
- Output Current type II: 20.0 A
- Input Voltage: For 7.5 kW and below : 240 V ±10% For 10.00 kW and below: 415 V ±10%
- No. of Brightness: 5 Step
- Industance upto 30 mH
- DC Current upto 1000 Amps
- Aluminium Wound, Air Natural
- Class F Insulation
- IP 22 Protection
- Natural Air Cooled Rectifier
- 6 / 12 Pulse
- 3MW DC Substation Rectifier Supplied to
- Western & Central Railways
- 2MW DC Substation Rectifier Supplied for Kolkata Metro, Kolkata Transways & Mumbai Monorail
- Input Voltage: 415 Volts AC
- Phase: Single / Three
- Voltage Variation:±10%
- Frequency: 50 Hz
- Output Voltage: Single / Three ,30 kV – 200 kV DC Peak Mid Frequency ,30 kV – 120 kV DC Peak
- Operating AC Voltage: 11 kV, 22 kV&33 kV, ±10%, 3 phase, 50/60 Hz
- DC output Voltage: 50 V to 1000 V
- DC current: 1 kA to 70 kA
- No. of Pulse: 6 or 12
- Type of control: Thyristor with OCTC and/or OLTC
- A low voltage high current DC power supply with oil cooled regulator and oil cooled transformer.
- 3 phase 415V AC fed into motorized or hand operated oil cooled dimmer regulator. Regulated output again connected to oil cooled step down transformer with oil immersed diode rectifier.
- Close loop controller with current raise or lower command
- Protection and annunciation circuit
- DC Voltage: 0 to 20VDC
- Input : 415V±10%
- DC Output: 80V
- DC Current: Upto 10 kA
- l Current Control Range : 20-100%
- Rating Class ‘B’ of IS 4540
- Input Voltage: 3 phase, 4 wire, 415 V ±10%
- Frequency: 50 – 60 Hz
- Output Voltage: 0-12 V (CV Mode)
- Output Current: 0-500A (CC Mode)
- T ambient: 50°C Max
- DC Current: upto 20 kA
- DC Voltage: upto 1000 VDC
- 6 / 12 / 24 pulse configuration
- Current / Voltage Stability : < ±1%
- Standards: IS / IEC