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Medium voltage variable frequency drives of PCTE-TV series
Phone/Fax: (+38-057)7381003, 7381101, 7380439
Variable frequency drives for induction motors
Low voltage variable frequency drives PCTE-T222
Medium voltage variable frequency drives of PCTE-TV series
Controlgear assembly of PCTE-T221 series on the base of sub synchronous cascade (SSC) for control over slip ring induction motors
Medium voltage variable frequency drives of PCTE-TV series


  • General information
  • Functions
  • Technical Data
  • Distinguished Features
  • Container Version

Automatic regulating apparatuses on the base of converter and transformer equipment of PCTE-TV series for variable frequency drive (VFD) are designed for frequency regulation of speed of pumps, fans, compressors and other mechanisms on the base of 6 and 10 kV squirrel cage induction motors in power range 400 – 8000 kW. The apparatuses provide frequency start, frequency regenerative braking and continuous operation of electric drive in operational frequency range.

To receive more information - Download the catalogue of PCTE-ТV


To send an inquire for delivery - Download inquiry form for VFD, fill in it and send to inquiry@eos.kharkov.org

 

Automatic regulating apparatus on the base of converter and transformer equipment of PCTE-TV series for variable frequency drive (VFD) provides:
- Frequency start of an electric motor with the current which does not exceed the rated value for the driven motor
- Catch and start a spinning motor
- Regenerative braking
- Keeping and regulation of motor rotation speed, both in open- and closed loop
- Keeping and regulation of a technological parameter (if a sensor is available) by means built-in PI regulator of a technological parameter
  - Local, remote discrete (from buttons or switch) and digital (RS485) control of start and stop of the electric drive
- Analogue (0…5mA, 4…20mA and 0…10V), discrete (from buttons “+” and “-“) and digital setting of frequency and technological parameter
- Communication via serial interfaces with SCADA
- Automatic alternation of technological parameter during day at operation according to table of settings
- Limiting of maximal and minimal frequency
- Choice up to 4 intervals of “prohibited frequencies”, at which a static operation of the drive is impossible
- Automatic restart after short-time power supply interruption
- 4 programmable analogue outputs and 8 programmable discrete outputs
- 8 analogue inputs
- Protection of the driven motor from exceeding of current, voltage, power, from loss of phase and stall
- Protection from overheating of matching transformers, smoothing chokes and semiconductor modules
- Fault diagnostics
Additional functions can be provided by means of agreement of technical requirements of Customer.
 

Automatic regulating apparatus on the base of converter and transformer equipment of PCTE-TV series for variable frequency drive (VFD) in the general case include:
- cabinets of controlgear assembly for variable frequency drive
- matching transformers and smoothing chokes of dry type.
PCTE-TV apparatus can be performed in container version with climate control system.
PCTE-TV apparatus are performed as 12 or 24 pulse circuits on input and output, and in power range 400 – 1250 kW also as 6 pulse circuit.
Supply of power circuit of PCTE-TV is realized by 6 or 10 kV ac three- phase voltage with isolated neutral.
Supply of auxiliary circuit (fans of forced cooling, contactors etc.) is realized from 380 (400) V, 50 Hz three- phase circuit with dead-earthed neutral. Permitted supply voltage variations – plus 10% minus 15% from the rated value.
Rated output voltage of PCTE-TV – three- phase, 6 or 10 kV, 50 Hz.
Frequency converter efficiency is > 0,98.
Frequency variation range of output voltage is from 0,5 to 50 Hz.
Operation frequency range is 10 – 50 Hz.
PCTE realizes field orientated control for regulation process.
Ambient temperature at related humidity 95% is from +1 to +35 ° С at indoor installation.
Cooling of cabinets of the controlgear assembly is air forced.
Protection degree is IP 21 for indoor installation
The variant with installation of cabinets of controlgear assembly indoors and transformer and choke equipment with protection degree IPX4D outdoors is possible.
PCTE-TV can be manufactured for outdoor installation at various climatic conditions – container version with climate control system

Upon agreement with a Customer, a medium voltage squirrel cage induction motor can be supplied in the delivery set.

Principal technical data of PCTE-TV are shown in the table:
 

Type

Rated power, кВт

Rated output current at voltage 6 kV,
A

Rated output current at voltage 10 kV,
A

PCTE-400-ТВ222

400

44

26

PCTE -500-ТВ222

500

55

33

PCTE -630-ТВ222

630

70

42

PCTE -800-ТВ222

800

88

53

PCTE -1000-ТВ222

1000

110

66

PCTE -1250-ТВ222

1250

137

82

PCTE -1600-ТВ222

1600

176

106

PCTE -2000-ТВ222

2000

220

132

PCTE -2500-ТВ222

2500

275

165

PCTE -3150-ТВ222

3150

346

208

PCTE -4000-ТВ222

4000

440

264

PCTE -5000-ТВ222

5000

550

330

PCTE -8000-ТВ222

8000

880

528


PCTE-TV apparatus can be also performed for 6,3 and 10,5 kV output voltage, and on the base of individual orders – range 3,3 – 13,8 kV. Because of wide varieties of PCTE-TV apparatus according to power, pulse number, way of installation of elemental parts of equipment (indoors or outdoors), their dimensions can be determined in each particular case.

To receive more detailed information, fill in and send us inquiry form.

Automatic regulating apparatus on the base of converter and transformer equipment of PCTE-TV series for variable frequency drive (VFD) have the following distinguished features:
• sine wave output voltage and practically sine wave input and output currents
• output filters are not required
• distance between the apparatus and the motor is not limited
• standard cables without screen can be used between the apparatus and the motor
• any common mode currents in the motor and the load are absent;
• realization of high efficient law of motor regulation providing optimal energy performance of standard induction motors and reducing vibration activities at critical frequencies
• low level of harmonic currents generated by the apparatus into network
• regenerative braking
• high possible deceleration rate
• increased stability in failure modes due to DC link reactor.
• special converter transformers are delivered in the drive set
 

For outdoor installation, variable frequency drives (VFD) in container version with climate control system are delivered.
Set of equipment contains:
1. Controlgear assembly installed in protected metal case (container) including in the general case:
- control cabinet
- power cabinets
- cabinet with commutation apparatus
2. Set of buses for commutation with power matching transformers
3. Air conditioning system of container:
- roof top air conditioner
- air conditioner control cabinet
- air ducts for forced cooling of PCTE boards
4. Power matching dry type transformers with IPX4D protection degree.

Container protection degree is not less IP54.
Possible ambient temperature is from minus 60 to +50°С.
At these conditions, the temperature from +17 to +25°С inside the metal case with converter equipment is kept by air conditioner forming comfortable conditions for operation of electronic equipment and for work of personal.
 


 
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