Triol AK02 soft starter
       Soft starter drive for asynchronous electric submersible pumps

General Description


       Purpose:
       Triol AK02 is intended to control and protect electric submersible pumping units (ESPU) with a nominal power from 16 to 500 kW. The drive provides reduced voltage soft start or direct start for induction (asynchronous) motors.

       Main Features:

Submersible motor protection   The Triol AK02 stops the motor under the following conditions:
  • The interruption in oil extraction (underload protection);
  • Supply network disturbances;
  • Current overload;
  • Low ESP insulation resistance;
  • High pipeline pressure (by a signal from a contact pressure gauge); and
  • ESP overheating (using submersible telemetric unit).

 

Extends ESPU life   The Triol AK02 provides a soft, unstressed motor start with the ability to adjust the inrush current in the range of 80-400% of the drive nominal current. This extends the ESPU life and allows using transformers with less power delivering capability and less expensive commutation devices.

 

Unjamming ESP   A high percentage of solid material in extracted oil may cause ESP jamming. In this case, the Triol AK02 stops the motor due to current overload. To start working again, the Triol AK02 can “kick start” the motor by applying pulses with a rated voltage amplitude in order to release (unjam) the ESP. For starting the motor under extreme load conditions, the direct start can be applied.

 

Easy operation and service   The Triol AK02’s construction is designed to ease operation and repair on-site under different climatic conditions.

 

Operates under severe climate conditions The Triol AK02 has a protection level of IP43 and an operating temperature range from minus 60°Cto plus 50 °C. This device has an effective climate control system with both heating and cooling capabilities, depending on the temperature inside the different sections of the drive.

Specifications


Triol AK02 technical specifications

Nominal output current

100…1000 A

Supply voltage

3 x 380 V (- 50%, + 25%), 50/60 Hz (± 2%)

3 x 480 V (- 15%, + 10%), 50/60 Hz (± 1%)

3 x 690 V (- 15%, + 10%), 50/60 Hz (± 1%)

Nominal output voltage

3 x 0…380 V (± 2%)

3 x 0…480 V (± 2%)

3 x 0…690 V (± 2%)

Overload current

125 % of nominal current for 300 seconds

Efficiency

> 95 %

Operating mode

Continuous

Insulation resistance

> 20 MOhm

Control system

UMKA-04 controller

Controller memory size

8 MB (870000 records)

2 GB with SD memory card

Interface

RS 232; RS 485; CAN; USB

Data exchange protocol

Modbus RTU; CANopen

Operating temperature

- 60 °C … + 50 °C

Protection level according to IEC 60529

IP43

 

 Triol AK02 model series

Model

Nominal output current, A

Full output power,

kVA

Dimentions,

mm

Triol AK02-160

160

70

840x1900x675

 Triol AK02-250

250

100

840x1900x675

 Triol AK02-320

320

125

840x1900x675

 Triol AK02-400

400

160

840x1900x675

 Triol AK02-630

630

250

1140x1900x680

 Triol AK02-800

800

290

1140x1900x680
 Triol AK02-1000 1000 360

1140х2000х900

    

Functionality


       The Triol AK02 offers the following functions:

  • Soft start of the motor using reduced voltage method; direct start is also applicable;
  • “Kick start” mode allows starting ESPs under extreme load conditions (jamming) by delivering pulses with nominal voltage amplitude to the motor;
  • “Manual”, “Automatic” or “Automatic with preset time” modes determine whether the motor starts automatically after a fault occurs or awaits the operator’s command;
  • Start and stop according to preset time configurations;
  • Block motor starting in the presence of turbine rotation;
  • Local and distant operating parameter control;
  • Starting ESP after supply is delivered after a preset time; and
  • Continuous monitoring of ESP isolation resistance and turning the motor off when isolation drops under a certain preset value.

       The Triol AK02 protects ESPs from the following:

  • Short circuit currentt;
  • Supply voltage unbalance;
  • Underload;
  • Overload;
  • Low “cable – ESP chassis” insulation resistance;
  • High ESP temperature (with submersible telemetry);
  • Low base oil pressure (using submersible telemetry);
  • High vibration level (using submersible telemetry);
  • High pipeline pressure (using contact pressure gauge);
  • ESM current unbalance; and
  • Start while turbine rotation is present.

Images

 

Triol AK02-630. Front view

 
AK02

Triol AK02 soft starter

Provides reduced voltage soft start or direct start for induction (asynchronous) motors.