Triol AC25 Soft Starter (Slow Starter, Thyristor Starter)

www.triolcorp.com

Catalogue 2015.04

Contents Introduction Product code structure Service conditions

Intro Intro Part No. Part No. AC25, 3 kV AC25, 6 kV AC25, 10 kV AC25-6 TSS Sys

AC25 Soft Starter, 3 kV AC25 Soft Starter, 6 kV AC25 Soft Starter, 10 kV AC25 based Transformer Soft Start System, 6 kV

AC25

Complex solution based on AC25 Soft Starter

AE Spares

Additional equipment Spares

S SD

Services Support documentation

1

Introduction Dear customers!

Intro Part No.

This Catalogue will give you the technical information on each model of Triol AC25 series Soft Starters and Triol AC25 based Transformer Soft Start System: overall dimensions of the models, dimensions with the doors opened, connection diagrams, etc. For your convenience, each series is described in a separate section. Triol AC25 Soft Starters and AC25 based Transformer Soft Start System are effectively applied in thermal power industry, metallurgy, housing and utility sector, chemical and mining industries. The Triol Corporation is engaged in research and development and placing new products on the market. Therefore, our Catalogue is regularly updated. The first page contains not only the year, but also the month of the last edition for your better orientation in our products. In the table of contents you can find the full list of equipment developed by our company. For verifying the up-to-dateness of the Catalogue you use, visit our website, www.triolcorp.com, Catalogues and Brochures.

2

Product code structure AC25-X-XXX-UHL4 1

2

3

Intro Part No.

4

TSS System AC25-X-XXX-UHL1 5

1. 2. 3. 4.

1

2

3

4

AC25 series Soft Starter description — Triol AC25 series Soft Starter (thyristor starter); Rated voltage — 6 kV, 10 kV; Rated current — 80...800 A; Climatic version • UHL4 (IP43, indoor, cold climate); • UHL1 (IP43, outdoor, cold climate) 5. Transformer soft start system — TSS System. AC25 Soft Starter versions: Model AC25-3-80 AC25-3-160 AC25-6-80 AC25-6-160 AC25-6-250 AC25-6-320 AC25-6-400 AC25-6-500 AC25-6-600 AC25-6-800 AC25-6-1000 AC25-10-80 AC25-10-160 AC25-10-250 AC25-10-320 AC25-10-400 AC25-10-500 AC25-10-600 AC25-10-800 AC25-10-1000

Rated voltage, kV 3; 3,3

6; 6,3

10; 10,5

Rated current, A 80 160 80 160 250 320 400 500 600 800 1000 80 160 250 320 400 500 600 800 1000

Rated power* for motor**, kW 320, 350 630, 700 630, 670 1250, 1350 2000, 2100 2500, 2700 3200, 3400 4000,4200 4800, 5000 6400, 6700 8000, 8400 1000, 1100 2100, 2300 3300, 3600 4300, 4700 5300, 5900 6700, 7300 8000, 8800 10000, 11000 13000, 14700

Note: * — Motor power depends on the starting conditions and therefore to be approved by the manufacturer individually; ** — With motor cos φ = 0,85 and efficiency — 0,93

3

Service conditions The climatic version is UHL (IP43, stands for moderately cold climate) and environment condition category 4 as per GOST 15150-69, GOST 15543.1-89 in closed stationary rooms under the following conditions: • Ambient temperature from +1 °C to +40 °C; • Relative humidity 60 % at temperature of +20 °C (without condensation); • Maximum height above sea level 1000 m; • The thyristor starters shall be able to operate in the type II atmosphere (limited by corrosive agent content) as per GOST 15150-69; • Non-conductive dust in the places of installation shall not exceed 0.7 mg/m3; The environment shall be non-explosive, shall not contain aggressive gases or vapors in the concentrations able to destruct metals or insulation, and shall not be saturated with conductive dust or water vapors. Soft starters shall be installed in the places meeting the requirements of the Electrical Installations Code. The place of installation shall be protected from ingress of water, emulsion, oil, etc. The operating position of thyristor starter cabinets is vertical, permissible deviation from the operating position is maximum 5° to any side. The thyristor starters are IP31 as per GOST 14254-96. Upon agreement with the Customer, the thyristor starters can be made IP00 or others as required. Thyristor starters correspond to M3 group of service conditions as per GOST 17516.1-90. The noise general level and spectra caused by operating thyristor starters do not exceed requirements of GOST 12.1.003-83 for permanent workplaces and working zones in the production areas. The radio interference level caused by operating thyristor starters does not exceed the values specified in Norms 8-95. Thyristor starter cabinets have natural air cooling with intake of the ambient air.

Intro Part No.

The climatic version is UHL1 (IP43, stands for moderately cold climate, outdoor) under the following conditions: • Ambient temperature from -60 °C to +50 °C; • Relative humidity 75 % at temperature of +15 °C (without condensation); The other conditions are similar to climatic version 4, mentioned above. In order to meet UHL1 requirements the products are included into enclosures with IP54 protection (protection from dust and drops of water at an angle 60° to vertical line, total protection from touch to any current-carrying parts) and they are provided with internal heating system as well.

4

AC25, Soft Starter, 6 kV

AC25 6 kV

Application The Triol AC25 – 6 kV Soft Starter has an advanced external interface that allows adapting it to the existing automatic systems and creating automated control systems based on it. The drive has universal design to enable control of both asynchronous and synchronous motors. Single-sided maintenance of the soft starter cabinet allows placing the equipment in the space-effective manner in the proper room. The Triol AC25 Soft Starters may be connected to several motors (either parallel or sequential starting connection), which is particularly relevant for pump stations. In this case, the soft starters come with high-voltage switching cabinets with the necessary number of inputs and outputs.

5

Basic functionality The Triol AC25 Soft Starter is designed for soft starting with starting current limitation, long-term nominal operation and braking of high-voltage asynchronous motors. The soft starter also enables limited control of electric motor RPM by changing the slip at low supply voltage. The AC25 Soft Starter can be used for soft start of synchronous motors in the asynchronous starting mode. In the Triol AC25 thyristor starter it is possible to select the quasi-frequency starting mode (followed by limited current starting) for devices with high starting torque. Depending on the starting duration as selected by user, the AC25 Soft Starter ensures maximum fourfold starting current ratio (to starter rated current) and control of asynchronous motors of 3, 6 or 10 kV voltage classes. The AC25 Soft Starter has an advanced external interface that allows adapting it to the existing automatic systems and creating automated control systems based on it. This is made possible by: • High functionality supported by a large number of the user-programmed parameters; • The UMKA-27 automation controller with both digital and text indication; • Sixteen programmable binary inputs (10 mA, Rload = 2 kOhm); • Eight programmable binary / relay outputs (250 V, 6 А); • Full parameterization of data flowing in the ACS channel.

AC25 6 kV

The core of the soft starter is a thyristor key, a circuit consisting of a number of serially connected links; each link consists of two antiparallel thyristors. Both resistive and resistiveand-capacitive circuits, as well as thyristor sensor, are connected in parallel to each link to level the voltages between the serially connected thyristors in both static and dynamic modes. The thyristor condition information is sent to the control system via fiber optic cable Each thyristor of the key has its own pulse transformer control node. The primary windings of their pulse transformers are connected in series to reduce the activation time dispersion of serially connected thyristors. The microprocessor controller sets operation modes of the device with the preset parameters with the help of control signals: thyristors control signals, AC25 protection and emergency cut-off signals, reception and transfer signals of external control, reference and information signals. The UMKA-27 controller is designed for reception and transfer of external control signals. The controller has a number of binary inputs and outputs. The FIU2 pulse generators (driver) along with IB units generate the required levels of thyristors control signals and galvanically isolate the thyristors and UMKA-27 power circuits and control circuits.

6

AC25, Soft Starter, 6 kV Technical characteristics Main parameters Rated input voltage, V Rated input frequency, Hz Number of input phases Rated own use input voltage, V Rated own use input frequency, Hz Number of own use input phases Number of output phases Power factor, min. Efficiency, min. Mean time between failures, hours; min. Regulated starting current ratio (to thyristor starter rated current) Regulated starting time Cooling type Operation mode Enclosure of cabinet (as per GOST 14254-80)

6000 ± 10 % 50 ± 2 % 3 220 AC 50 ± 5 % 3 3 0.95 0.95 20000

AC25 6 kV

up to 4 1 to 60 s forced air cooling cyclic, long-term IP31

The Triol AC25 Soft Starter has the following protections: • Motor overcurrent (current vs. time characteristic); • Motor starting overtime (up to 60 s with current limitation to four soft starter Irated); • Exceeded number of starts with disabling of start; • Incorrect phase sequence; • Loss of input voltage in one or more phases; • Closed-door switches; • Emergency shutdown (using the «STOP» button) or unable to start because of the «STOP» button pressed; • Output phase-to-phase shot-circuit; • Earth fault at one or more output phase; • Input current unbalance; • Input voltage unbalance; • Mains frequency variation; • Power thyristors testing (test before start-up and during acceleration); • Shunting contactor phase loss; • Motor overheating; • Thyristor overheating; • Exceeded number of starts per hour; • Loss of load (motor underloaded); • Low mains voltage; • High mains voltage; • Overcurrent protection (OCP).

7

Typical single-line diagrams Typical single-line diagrams for the AC25-6 Soft Starters with two types of cabinets: Medium-Voltage Switchgear (MVS-6) and Optional Switchgear (OS-6). The AC25-6 Soft Starters with the MVS-6 or OS-6 cabinets enable starting, mains-feed running and braking AC motors of various types. Below are shown the simplest connection diagrams of the AC25-6 Soft Starters and the OS-6 for control of asynchronous squirrel-cage motor M. Drawout circuit breakers VV…VV2 are customer supplied and can be switched on/off by the relay signals from the AC25-6 control system.

AC25 6 kV

Mains 6kV, 50Hz

Mains 6kV, 50Hz

VV

VV1

VV2

АС25-6-хххх-1-1-1-...

АС25-6-хххх-1-1-1-...

UMKA-27 Controller

UMKA-27 Controller

Modbus RTU

Modbus RTU

КМ RVZ

Own use

220V AC

Own use

220V AC

RVZ

OS-6-хххх-0-11-0-...

OS-6-хххх-1-11-0-... RVZ - Isolated disconnecting switch

M

Starting up, switching to mains and braking of a single asynchronous motor

M

RVZ – disconnecting isolated switch

Motor starting circuit with possibility of direct starting through external bypass line

For operation with synchronous motor, the AC25-6 is complemented with thyristor exciter with input transformer. Mains 6kV, 50Hz

VV

АС25-6-хххх-1-1-1-... Own use 220V AC Modbus RTU

Mains 0,4 kV

UMKA-27 Controller

М

Exciter

Т(in) 0,2/0,4kV

Control system

8

AC25, Soft Starter, 6 kV The AC25-6 control system generates the reference current by its exciter until the motor is switched to mains-feed operation; then the exciter either generates excitation current while maintaining cos φ or preset reactive power Q on the 6 kV supply mains side. Below is shown the diagram to demonstrate the use of the AC25-6 Soft Starter and OS-6 cabinet for starting, mains-feed operation and braking of an asynchronous phasewound motor of a high-power compressor.

Mains 6kV, 50Hz

VV OS-6-500-0-32-0-... RVZ 1

АС25-6-500-1-1-1-... КМ1

Own use 220V AC Modbus RTU

UMKA-27 Controller

Disconnecting switch

КМ2

RVZ 2

U1 = 6000 V I1 = 493 A

С1 С2 С3 RV 1

M U2 = 1985 V I2 = 1375 A

RV 2

RV – Disconnecting switch RVZ – Isulated disconnesting switch

Starting rheostat

OS-6-1000-0-20-0-...

The AC25-6 provides current-limited starting, mains-feed operation and stop of the high-power compressor motor with closed disconnectors RV1 and RV2 of OS-6-1000 cabinet and disconnectors RVZ1 and RVZ2 of OS-6-500 cabinet OS-6-500. Having closed • Disconnectors RV1 and RV2 of OS-6-1000 cabinet, • Disconnectors RVZ1 and RVZ2 of OS-6-500 cabinet and opened • Disconnector RV of OS-6-500 cabinet customer can control motor M with phase-wound rotor in the classic way, i.e. using the starting rheostat (resistive contactor slip regulator) available at the facility. Therefore, the AC25-6 Soft Starter and OS-6 cabinet can be effectively used in the circuits with equipment redundancy in accordance with the Customer requirements.

9

AC25 6 kV

Motors sequential starting options Below is shown a diagram for sequential starting of two motors from any of the two supply sections based on the AC25-6 Soft Starter and OS-6 cabinet. Section 1 6kV, 50Hz

AC25 6 kV VV1

Section 2 6kV, 50Hz

VV2

VV3

VV4

АС25-6-хххх-2-1-1-...

Own use 220V AC UMKA-27 Controller

Modbus RTU

КМ1

КМ2

RVZ1

RVZ2

OS-6-хххх-2-22-0-...

M1

M2

RVZ – Isolated disconnecting switch

Each motor is switched to the mains after starting completion with the help of dedicated external bypass switch. If voltage of 6 kV is not available at one of the voltage inputs, the system carries out sequential starting of motors from another input. The last of started motor, while in mains-feed operation mode, will be supplied from the active 6 kV input through the internal bypass contactor of the AC25-6 Soft Starter.

10

AC25, Soft Starter, 6 kV Sequential starting a group of n motors from two supply sections A single AC25-6 Soft Starter can start maximum n ≤ 6 motors, because its control system on the maximum configuration generates on/off signals for fourteen (14) external switching devices. Normally, no internal bypass contactor is installed in the AC25-6 Soft Starter. Section 1 6kV, 50Hz

VV1

Section 2 6kV, 50Hz

VV2

VV3

АС25-6-хххх-n-1-0-...

RVZ

RVZ

КМ

КМ

MVS-1-1

Own use 220V AC

MVS-1-1

UMKA-27 Controller

Modbus RTU

КМ1

КМ2

КМ1

КМ2

RVZ1

РВЗ2

RVZ1

RVZ2

OS-6-хххх-2-22-0-...

OS-6-хххх-2-22-0-...

M1 M2

Mn

RVZ – Isolated disconnecting switch

In case of a great number of motors, the sequential starting system based on the AC25-6, OS cabinet and MVS cabinet can be supplemented with a Contactor Control Cabinet. The equipment is similarly supplemented in case of redundancy of the power equipment to increase reliability of the starting system.

11

AC25 6 kV

Motors sequential starting options System for sequential starting of four motors from several 6 kV power inputs

AC25 6 kV

The figure below shows the system for sequential starting of four high-power motors from several 6 kV power inputs; it is assumed that one input in each pair of sections «1 and 2» and «3 and 4» is always active (energized). The system softly starts and switches to mains any of four motors by one of the two AC25-6 Soft Starters with OS-6 and MVS-1-1 cabinets. In accordance with operational algorithms, Contractor Control Cabinet carries out coordinated control of customer’s switches (VV1, VV2), MVS-1-1 and OS-6 cabinets, and both the main and standby starters. The UMKA-27 Controllers of AC25-6 Soft Starters and UMKA-03 Controller of the Contactor Control Cabinet form up a typical hierarchical structure. The UMKA-03 process controller of the Contactor Control Cabinet manages information exchange with customer’s automatic control system. VV1

VV2

Section 1 6kV, 50Hz

Section 3 6kV, 50Hz

Section 2 6kV, 50Hz

RVZ

RVZ

RVZ

RVZ

RVZ

RVZ

RVZ

RVZ

КМ

КМ

КМ

КМ

КМ

КМ

КМ

КМ

MVS-1-1

MVS-1-1

MVS-1-1

MVS-1-1

MVS-1-1

MVS-1-1

MVS-1-1

OS-6-хххх-2-22-0-... КМ1

КМ2

КМ1

КМ2

RVZ1

RVZ2

RVZ1

RVZ2

M3 M4

АС25-6-хххх- 4-0-0-...

АС25-6-хххх- 4-0-0-...

QF

QF UMKA-27 Controller

RV2

UMKA-03 Controller

OS-6-хххх-0-22-1-...

RV1

UMKA-27 Controller

RV2

OS-6-хххх-0-22-1-... Modbus RTU Contactors Control Cabinet

12

MVS-1-1

OS-6-хххх-2-22-0-...

M1 M2

RV1

Section 4 6kV, 50Hz

AC25, Soft Starter, 6 kV The main methods of starting / braking electric motors Soft starting with controlled voltage ramp is the mostly used method of starting lowpower motors. The high-power starters of the AC25-6 series have a closed-loop load current regulation system; therefore, voltage regulated starting is used only during adjustment with dummy load.

U / Urated 1,0

Motor current limitation during stating is an effective way to reduce the impact on the supply mains and, at the same time, to increase the mechanical reliability through lower loads on the kinematical elements.

dU /dt 0,5

0,15 ∆t initial

t, s ∆t start

∆t braking Tcycle

Current-limited soft start is used for starting high-power motors with high shaft resistance torques and/or for maintaining a given moment during motor acceleration. I / I rated ∆t start 4,0 3,0 2,0 1,0 0,15 ∆t initial

t, s ∆t braking

di /dt Tcycle

At the initial stage ∆tinitial the state of internal electronic units and power thyristor keys of the AC25-6 is tested. The motor starting current ramp, dI/dt, is set by the internal intensity setter in the AC25-6 control system. The dotted section of the current curve (on the left) corresponds to mains-feed operation of the motor through the power circuit of AC25-6.

13

AC25 6 kV

The main methods of starting and braking electric motors The motors starting systems given on page 10 (soft starters for starting, mains-feed operation and braking of various AC motors) generally feature the following operation procedure: • Actuation of the input contactor of I / I rated Operation of AC25 electronics AC25-6 determines the beginning 4,0 of interval ∆tinitial (self-test, etc.);

AC25 6 kV

• Acceleration stage with preset ramp dI/dt and overload limitation at Кoverload = 3.0 (for example) ends up with current reduction to the rated value when the motor reaches the rated RPM; • Time interval ∆tbypass min shall be sufficient for reliable switching the motor to the mains after internal bypass actuation. Here, the current through the AC25-6 electronics reduces to zero. Internal or external bypass contactor continues operating if long-term mainsfeed operation is required.

К overload ≈ 3*Irated

АС25

3,0 Operation of external bypass contactor

2,0

Imotor

IАС25

1,0

t, s

0,15 ∆T initial

∆t bypass min

dI /dt

Operation of input contactor

t, s

Operation of internal bypass contactor

t, s

Tcycle

Start-up with a «breakaway» pulse is often used for heavy machinery with high motor shaft resistance torque to carry out breakaway and beginning of shaft rotation. The «breakaway» pulse (aka kick-start) is a part of motor direct starting; it features significant currents up to 5 to 7 times motor rated current depending on the power rating. When starting the motor, the «breakaway» pulse ∆tbypass , when current is supplied to bypass and back to the thyristor circuits. Other stages of start-up are typical.

I / Irated

Bypass actuation Ibreakaway motor = (5...7)*Irated motor ≤ 4*Irated АС25

4,0 3,0

К overload ≈ 2,6*Irated АС25 Operation

2,0 1,0 0,15 ∆t initial

t, s ∆t bypass

∆t start

∆t braking runout

Start-up, operation and shutdown of motor

14

AC25, Soft Starter, 6 kV The «quasi-frequency» starting methods are good for starting motors with high shaft torque Mst ≈ 0.3*Mrated , for example, in grinding mills. Here, soft start is performed by generation of the low-frequency harmonics of the motor load currents, the frequency and amplitude of the harmonics being increased during the starting. At motor RPM ν ≥ (0.6 ... 0.7) * νrated the starter is normally set to standard soft start mode with current limitation.

AC25 6 kV

Quasi-frequency starting Mains voltage (one phase is shown for clarity)

50 Hz

t

One of «quasi-frequency» starting methods is shown in the diagram where the red curve is the calculated current curve.

Current flows through motor windings The first «harmonic» of the phase current in motor winding (phase shift is not shown for clarity)

50 Hz ≈ 7 Hz 7

The main motor shutdown modes include «rundown» braking and «ramp-down» braking. For the majority of machines, the motor rundown braking terminates the cycle quickly and effectively. Rundown braking is achieved by shifting the control pulses from AC25-6 thyristor keys to the inverter operation and/or their break-down. The motor «loses» the power supply and is decelerated by the shaft resistance. The ramp-down braking is used when desired deceleration rate is less than in case of during rundown braking due to process and/or other requirements. The ramp-down braking is typical for drive motors of pumps where the smooth braking is necessary to avoid pressure/head surges (water hammering) in the pipeline system.

15

16

Phase C

Phase B

Phase A

Control pulse generators

Thyristor conductivity sensor

Modbus RTU /optical channel

Voltage meter

Low level controller

/Digital control/

Analogue signal

Current sensors

Thyristor control system

/Analogue signal /galvanic isolation

/Digital signal /optical channel

/Digital control/

Thyristor cooling system /Digital control/

Modbus RTU /optical channel

Upper level controller

Input contactor

Modbus RTU /RS485

Modbus RTU /RS485

Bypass contactor

Analogue I/O expansion module

Binary I/O expansion modules

Motor 6 temperature

Motor 5 temperature

Motor 4 temperature

Motor 3 temperature

Motor 2 temperature

Motor 1 temperature

Motor 6 bypass control

Motor 6 MVS control

……………

Motor 2 bypass control

Motor 2 MVS control

Motor 1 bypass control

Motor 1 MVS control

Input cell control (mains 2)

Input cell control (mains 1)

AC25 6 kV

Thyristor Temperature monitoring system

Thyristor temperature sensors

Functional diagram of the Triol AC25 Soft Starter

AC25, Soft Starter, 6 kV Block diagram of the Triol AC25 Soft Starter Bypass contactor AC25 6 kV

Phase A

A1 Power three-phase mains

A2

A3

Input contactor

6000 V Electric motor

M

Phase B Phase C

Overall dimensions Triol AC25 model AC25-6-80 AC25-6-160 AC25-6-250 AC25-6-320 AC25-6-400 AC25-6-500 AC25-6-600 AC25-6-800 AC25-6-1000

Width (L), mm

Height (H), mm

1104

2350

Depth (D), mm

1104 1504

2287

17

Overall dimensions of the Triol AC25 Soft Starter Open-door overall dimensions of the AC25 Soft Starter and power cell (up to 400 A)

2350

AC25 6 kV

514

1618

1104

2287

Open-door overall dimensions of the AC25 Soft Starter and power cell (over 400 A)

449

1553

1504

18

Triol AC25 based Transformer Soft Start System 6 kV

AС25-6 TSS Sys

Application The Triol AC25-6 6 kV soft start system is an automated control system designed for various machines and featuring an advanced external interface. Transformer Soft Start System (TSS System) in the block-box version is used for commissioning new medium power transformers (6/10 kV). The system includes several soft starters. TSS System also includes medium-voltage switching (MVS) cabinet for the necessary number of inputs and outputs, and the system control cabinet. The TSS System block-box provides comfortable microclimate for the operator and optimum temperature conditions for equipment in operation. The products are made of light roll-welded metal structures. Thanks to high-quality materials, the products have longer service life. The dimensions of the block-box allow its transportation without using special vehicles.

19

Basic functionality

AС25-6 TSS Sys

Soft start system is used for soft starting of step-up transformers (for example, TDTN 40 000/110 (40 МVА)) to idle running as supplied by generator voltage of 6,3 kV to reduce the starting currents and dynamic loads on transformer windings. The soft start is provided by limitation of thyristor opening angle that enables smooth increase of voltage on the windings of the 6 kV transformer and simultaneous limitation of magnetization current. Closed-loop regulation system enables the control during the entire starting process. The algorithm applied enables the control of the soft starting irrespective of the connection diagram of transformer windings (Y or ∆). Soft starting system includes microprocessor control system, three-phase thyristor voltage regulator and a set of additional switching equipment. Functional characteristics: • Automatic connection of transformer to a standard cell upon soft start termination; • Remote execution of soft start commands in the standard mode and test run mode, from the control panel of automated workstation of relay protection and automatics system to the operator control panel; • Remote execution of soft start commands in the check mode, from the control panel; • Remote view and change of parameters of control panel and from automated workstation of relay protection and automatics system; • Monitoring the state of main components of the device and the control system. The system remains operable at: • Deviation of electric mains parameters: total voltage harmonic distortion (THDu) of 16%; • Deviation of power three-phase 6 kV voltage from the rated value within ± 20 %; • Deviation of supply voltage of 220 V DC for own use from rated value within ± 20 %; • Deviation of alternating voltage frequency of 50 Hz from rated value within ± 2 %. Operation features: • The system can receive power supply from two sections of buses in a 6 kV distribution gear and start each transformer from the own section of buses; • The system carries out sequential soft connection of transformers to the supply mains with pre-magnetization; it is also possible to start the transformers directly upon at the discretion of operators; • The system contains two soft starters for redundancy allowing starting each transformer from the own bus system by means of any of the selected soft starter; • The transformers are connected with disabled load of the transformer (idle running).

20

Triol AC25 based Transformer Soft Start System 6 kV The System carries out logging of emergency and standard events (at least 30 standard and 30 emergency starting events) for the following parameters: • • • • • • • • •

Trends of actual phase currents and linear voltages during the start-up; Start-up beginning date and time; Start-up process duration; Values of start-up parameters; State of starter components; State of protection during emergency situations; Start-up process time history with millisecond accuracy; Curves of actual currents and linear voltages during the start-up; Curves of instantaneous currents and linear voltages and other variable control signals (current regulator signals, pulse-phase controls system signals, etc.); • Test mode for checking the starter in the test run mode; • Self-testing in case of faults.

AС25-6 TSS Sys

21

22

To external control panel: RS-485 Modbus RTU

Power supply of own use: 3х380 V – 8 kW

Contactor Control Cabinet

UMKA-27

ShOS

Control and power circuits

ShSN

Soft Starter 1

ShOS - Heating and signalling system cabinet EK - System of block-box heating elements ShSN - Switchgear of own use

I/O Switchgear 1

Mains 1 (6 kV) Transformer 1

MVS

Transformer 2

Soft Starter 2

External contactors control

I/O Switchgear 2

Mains 2 (6 kV)

Block diagram of the Triol AC25 based Transformer Soft Start System

AС25-6 TSS Sys

Triol AC25 based Transformer Soft Start System 6 kV Technical characteristics Main parameters Rated input voltage, V Rated input frequency, Hz Number of input phases Rated own use input voltage, V Rated own use input frequency, Hz Number of own use input phases Number of output phases Power factor, min. Efficiency, min. Mean time between failures, hours; min. Regulated starting current ratio (to thyristor starter rated current) Regulated starting time Cooling type Operation mode Enclosure of cabinet (as per GOST 14254-80)

3000 (6000; 10000) ± 10% 50 ± 2 % 3 220 AC 50 ± 5 % 3 3 0,95 0,95 20000

AС25-6 TSS Sys

up to 4 1 to 60 s forced air cooling cyclic, long-term IP31

Triol AC25 soft starter has the following types of protection: • Motor overcurrent (current vs. time characteristic); • Motor starting overtime (up to 60 s with current limitation to four soft starter Irated); • Exceeded number of starts with disabling of start; • Incorrect phase sequence; • Loss of input voltage in one or more phases; • Closed-door switches; • Emergency shutdown (using the «STOP» button) or unable to start because of the «STOP» button pressed; • Output phase-to-phase shot-circuit; • Earth fault at one or more output phase; • Input current unbalance; • Input voltage unbalance; • Mains frequency variation; • Power thyristors testing (test before start-up and during acceleration); • Shunting contactor phase loss; • Motor overheating; • Thyristor overheating; • Exceeded number of starts per hour; • Loss of load (motor underloaded); • Low mains voltage; • High mains voltage; • Overcurrent protection (OCP).

23

24

2636

3320

1070

Platform + ladder

Adapter installation fittings

9172

Triol AC25 – 6 kV TSS System block box

Note:

AС25-6 TSS Sys Block boxes for all rated power values of Triol AC25 based TSS System have overall dimensions suitable for transportation

1620

Platform + ladder

Overall dimensions of Triol AC25 based Transformer Soft Start System

9

8

1 2

— ventilation system — heater

1 10

3, 4 5, 6

2

— soft starters — medium-voltage input cabinet

5

3

2

7 8

— medium-voltage switchgear (MVS) — heating and signalling system cabinet

7

9 10

4

— own use cabinet — control cabinet

2

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6

Triol AC25 based Transformer Soft Start System 6 kV

Components of Triol AC25 based Transformer Soft Start System

AС25-6 TSS Sys

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Services

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Triol Corporation is a leading developer and manufacturer of electric equipment. That’s why it pays considerable attention to the offered products service support. We conduct trainings for exploiting personnel of our Customers and Partners. Triol Corporation’s service support is carried out in collaboration with our Partners and includes: • Warranty repair and spare parts; • Post-warranty repair and spare parts; • Diagnosis and Troubleshooting; • Online Technical support; • Specialist on-site visit to the Customer; • Preventative service; • Personnel trainings. We guarantee steady and correct Triol AC25 Soft Starter operation, if service, transportation and storage regulations are observed. Warranty period for Triol variable-frequency drives stated according to the Supply contract. We disclaim all warranties for a Soft Starters repaired within the guarantee period without the consent and participation of the Manufacturer. We have spare parts warehouse and service support through our partners. It allows us to immediately respond to your requests and allows our Partners and Customers to feel confident in the future.

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Support documentation Supporting documents include: • Registration Certificate. Includes basic information, product specifications, operation life, service and shelf life, manufacturer’s guarantees; delivery set; certificates on packing and acceptance; service records; notes on operation and storage; data on disposal and reclamation; special notes; • Operating Manual. Includes the main parameters and characteristics of the product, its design; service conditions, components, reliability, marking and packing; installation of the product, preparation for use and use; possible faults and remedial actions; maintenance, safety precautions, transportation, storage and disposal. To receive, archive and process the information we offer specialized Service Software to analyze the log of events with history of control system operations, including graphic presentation. For convenience of data transfer, it is possible to export the data to Excel format. The combination of the Service Software and Triol МТ01 enables remote control. For downloading up-to-date manuals and service software, visit Triol Corporation website www.triolcorp.com, «Technical Documents» and «Software».

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