SIEMENS
ROBICON Perfect Harmony
Liquid-cooled drives
2
2/2
Siemens D 16.2 – 2012
Overview
Benefits
ROBICON Perfect Harmony Overview
ROBICON Perfect Harmony drives provide variable speed
operation by converting utility power at fixed frequency and
fixed voltage to variable frequency, variable voltage power.
This conversion is done electronically without moving parts.
The following table shows the main characteristics of
the ROBICON Perfect Harmony liquid-cooled generation
discussed in this catalog and the short terms used.
Liquid –Cooled Product Line
Product
Line
Cell voltage
V
Cell current
A
Cooling
method
Order
numbers
WCIII
750
880...1250
Liquid-cooled
6SR3
Figure 2.1
Standards and regulations
ROBICON Perfect Harmony drives are designed, manufactured
and tested according to applicable NEMA, ANSI, IEEE and
IEC standards.
ROBICON Perfect Harmony drives meet the applicable
requirements of the following EU regulations:
• Low-Voltage Directive (LVD)
A Declaration of Conformity and attached CE mark
declares conformity of the low-voltage compartments of
the product (e.g. control cubicle, excitation unit etc.) with
LVD 2006/95/EC and the associated standard IEC 61800-5-1
Ed.2.
• EMC Directive (EMCD)
A factory certificate declares that the products satisfy
the requirements of EMCD 2004/108/EC concerning
electro-magnetic compatibility, when put to their intended
use and conform to the associated standards IEC 61800-3
• Machinery Directive (MD)
The offered products are intended solely for installation
as components into a machine, system or plant. They are
designed to satisfy the relevant requirements of the
standards IEC 61800-5-1, IEC 60204-1 and IEC 60204-11
to allow the machine manufacturer or system / plant
integrator – by appropriate usage of the products – to
meet the requirements of the Machinery Directive.
Within the European Economic Area (EEA), operation is
prohibited until the conformity of the end product with
Machinery Directive 2006/42/EEC has been established.
It is the sole responsibility of the machine manufacturer
or system / plant integrator to ensure this.
Clean power input
The ROBICON Perfect Harmony drive:
• Meets the most stringent IEEE 519-1992 requirements for
voltage and current harmonic distortion, even if the source
capacity is no larger than the drive rating
1)
• In most cases eliminates the need for costly and inefficient
harmonic filters and its associated resonance problems
• Protects other online equipment from harmonic disturbance
(computers, telephones and other power converters)
Power quality output
The ROBICON Perfect Harmony drive:
• Reduces common mode voltage on the motor stator
windings
• Minimizes drive induced torque pulsations and associated
torsional analysis compared to other medium voltage
topologies, by using a motor friendly pulse width
modulation (PWM) output
• Offers sinusoidal output that eliminates additional losses
due to harmonics thus it can be used with new or existing
motors without derating
Maximized availability
The ROBICON Perfect Harmony drive:
• Remains operational in the event of a cell failure by using
the cell bypass option which bypasses the faulted cell
• Offers a Process Tolerant Protection Strategy (ProToPS)
based on a hierarchical warning system that allows the
operator to evaluate the drive disturbance and respond
appropriately to avoid system shutdown
Introduction
20,000hp/
14,920kW
18,000hp/
13,428kW
16,000hp/
11,936kW
14,000hp/
10,444kW
12,000hp/
8,952kW
10,000hp/
7,460kW
8,000hp/
5,968kW
6,000hp/
4,476kW
4,000hp/
2,984kW
Cell Current Rating
880A
1250A
Power range for ROBICON Perfect Harmony liquid-cooled Drives
1)
IEEE 519-1992 compliance can only be guaranteed in networks without
prior disturbances or harmonics already present.