Delta-T RZ-01V Series Bedienungsanleitung PDF herunterladen (Seite 4)

Delta Medium Voltage Drive

Advanced Features & Benets

System Structure

Advanced Technologies

• Advanced vector control algorithms

with and without speed sensors

to enhance motor control

performance.

• Advanced auto tuning of motor

parameters to improve the stability

of the vector control.

• DC current braking injection.

• Power loss ride through, and

synchronous transfer for single or

several motors.

• Coordination and control of master-

slave variable frequency inverters

to meet load sharing application

requirements.

• Use of phase-shift multi-pulse input

transformer to decrease the input

grid current harmonics and meet the

IEEE 519-1992 requirements.

• Use of cascaded multilevel

inverter technologies to deliver

nearly sinusoidal output voltage

waveforms, meeting motor drive

requirements for long-distance

cables.

Enhanced Process & Quality Control

• Capability to produce large output

torque at low speeds and during

motor startup, increasing speed

response and control accuracy

within motor torque limits.

• Integrated PID controller for precise

control on ow, pressure or other

process variable.

• Control operation under temporary

input power loss and capability to

restart automatically after grid fault

and recovery.

• Advanced protection functions such

as motor stall and output fault to

ground.

• Friendly customer interface for easy

system integration with customer’s

process.

Control and Monitoring Functions

• Speed command (rpm)

• Operating speed (rpm)

• Input/output power, current, voltage

• Accumulated running time

• MVD status

• System bypass switches and user

breaker status

• Programmable analog I/Os

• Alarms and faults

• Event recording

Lower Cost of Ownership

• System efciency is higher than

98%, which decreases system

operating costs (excluding phase-

shift transfomer).

• Optimized blower and water pump

operations to ensure energy-

saving and shorten the investment

recovery period.

• Integration of input transformer

allows three-cable-in-three-cable-

out reduced installation engineering

effort.

• Smooth speed control decreases

mechanical stress, elminates

pipe-hammer effect and reduces

maintenance costs.

• Multilevel output voltage and

controlled starting currents reduce

motor stress.

• Synchronous transfer switchgear

cabinet for soft starter applications

for single or multiple motors.

Protection Functions

• Over-current protection

• Over-load protection

• Transformer high-temperature alarm

& over-temperature protection

• MVD over-temperature protection

• Under-voltage & over-voltage

protection

• Motor over-load protection (external

protection relay connection)

• Cooling fan abormal alarm

• Cabinet door open protection

• Cabinet pressure alarm

• Output short-circuit protection

• Input/output phase loss protection

• Communication failure protection

• Output grounding protection

• Motor stall alarm/protection

• Motor reverse rotation alarm/

protection

• Over-speed and under-speed

alarm/protection

System Diagram

Modular System

Each output phase consists of multiple power modules

connected in series to achieve the required output voltage

level.

System Voltage Cells/phase

Phase-shift

transformer (pulses)

3.3kV 3 18

4.16kV 4 24

6kV 6 36

6.6kV 6 36

10kV 9 54

11kV 10 60

A1

B1

C1

A2

B2

C2

An

Bn

Cn

Control cabinet

Control

system

Optical fiber

communication

Power unit cabinet

Transformer cabinet

Bypass cabinet (option)

Input

Output

4 5

1 2 3 4 5 6 7 8 9 10 11

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