Category: ABB

High density solutions

Cyberex offers the complete current limiting, selectively coordinating solution for

your high power, high efficiency data center

The industry demand to increase data center

efficiency and push the limits of power density at

the rack has introduced new design trends. While

one proposed solution, raising the distribution

voltage in the whitespace, helps meet these

demands, data center systems designed at higher

voltages (415V, 480V) provide system owners and

designers with a new set of challenges and

concerns to overcome.

Selective coordination,increased arc flash potential, protecting sensitive

IT equipment and complying with SCCR and IR

code requirements take center stage. These

heightened concerns are mainly driven by the

removal of a transformer and the potential

increase in available fault current when compared

to traditional 208V designs. With the high available

fault currents, average main and branch breaker

combinations will not allow branch breakers to trip

independently of the main, forcing the shutdown

of an entire panelboard to clear an overcurrent on a

branch circuit. This lack of coordination will in turn

cause unnecessary downtime to critical server loads.

Cyberex® RPP features

•   UL listed current limiting branch circuit breakers

•   IP20 touch safe

•   Voltage ratings: 208/120V, 415/240V, 480/277V

•   Current ratings: 225A, 400A

•   1 to 100A branch breakers at 208V

•   1 to 25A branch breakers at 480V

•   Interrupting ratings: 35kA at 208V, 14kA at 480V

•   Main/branch breaker coordination up to 28.6kA at 208V, 14kA at 480V

•   Insulating resin encased bus

•   Pluggable breaker with non-energized bolt on screw

Current limitation

ABB’s utilization of current limiting circuit breakers

brings a whole new level of protection and peace of

mind to the distribution of electrical power on the

data center floor. Two of the most notable benefits

of current limitation are increased protection for

downstream system components and the

mitigation of arc flash hazard for workers. Both

mechanical and thermal forces are drastically

reduced through current limitation, which in a data

center, means less potential damage or strain on

the sensitive and expensive IT equipment. This

heightened protection helps remove worries of

extended downtime due to repairs or replacing of

damaged equipment. Current limitation is also the

driving factor to reducing the energy released

during an arc flash event.

Selective coordination

Selective coordination defines a system’s ability to

isolate a fault and increase system reliability. If a

fault was to occur in a selectively coordinated

system (Figure A) the overcurrent protective device

closest to the fault will clear the fault and leave the

rest of the system undisturbed. If the system was

not selectively coordinated, (Figure B) like the

majority of standard RPPs, the breaker closest to

the fault may or may not clear the fault before

upstream breakers start to open causing

unnecessary loss of power to critical loads.

Safety

Working on live electrical equipment is never

recommended, however sometimes becomes a

‘necessary’ task due to the criticality of system

loads in a data center. Cyberex RPPs significantly

enhance worker safety due to its touch safe

panelboard chassis and plug in current limiting

branch breakers. Along with drastically reducing the

shock hazard, the use of current limiting breakers

significantly reduces the arc flash potential to which

a worker could be exposed. Both benefits help users

comply with NPFA 70E guidelines and OSHA standards.

Easy to use and install

ABB UNITROL® 1000 Compact System comes equipped with an extensive number of technical highlights

that make it easy to use and fast to install. Ideal for power plants and shipyards, very limited excitation

expertise is required to handle it.

Advantages

• Space-saving design: Among the smallest in

its class, perfect for compact spaces

• Cost-effective: Reduced installation,

commissioning, and maintenance costs due

to its compact, pre-engineered setup.

• Cyber-Secure: Compliant with DNV Cyber Security Profile 1.

• High Availability: Dual-channel version

ensures continuous operation even if one channel fails.

• Fast to commission, even with limited

experience with excitation systems through

the AVR & PSS tuning assistant software.

• Grid code compliant: Embedded PSS

functions ensure compliance without extradevices.

• Experts support: Experts available remotely

or onsite for commissioning support. In

house expertise for regulation optimization

and grid connection studies

The optimal pre-engineered control solution for land based and marine applications

When space and speed are of

essence, a small pre-packaged and

pre-tested excitation system is the

key to a successful project delivery.

ABB UNITROL® 1000 Compact

System is a pre-engineered

excitation system, conveniently

mounted on a backplate for easy

installation and seamless integration

with any generator control system.

As one of the smallest systems in its category,

it is the perfect solution for locations where

space is critical, making it ideal for new

installations or upgrade projects.

Designed for applications requiring single or

dual channel Automatic Voltage Regulators

(AVR), every version of the new Compact

System comes equipped with UNITROL® 1020 FULL.

This ensures all functionalities are inherited and

compliant with the DNV Cyber Security Profile 1

(based on IEC 62443) regulations. Additionally,

Power System Stabilizing (PSS) capabilities can

be optionally included.

All UNITROL® 1000 Compact Systems are pre

mounted and wired on a backplate, and

thoroughly tested before delivery, significantly

reducing the need for onsite adjustments and

minimizing wiring errors.

Temperature effects

Ambient temperature within the permissible range

– At zero point: ≤ 2 % of range per 10 °C – At sensitivity without thermostat:

≤ 3 % of the measured value per 10 °C – Sensitivity with thermostat (optional):

Sensitivity with thermostat (optional): ≤ 2 % of measured value per 10 °C

Thermostat temperature = 55 °C

Barometric influences – At zero point: No influence – Sensitivity during pressure correction by means of

integral pressure sensor

Per 1 % barometric pressure change: ≤ 0.2 % of measured value

Barometric pressure variation

If a hose is used for the internal gas line, the pressure sensor is located in the sampling gas line.

If a hose is used for the internal gas line, the pressure sensor is routed externally through the hose.

Operating range of the pressure sensor: pabs = 600-1250 hPa

Power supply influences

Voltage and frequency within the permissible range: no effect

Measurement principle

Non-dispersive infrared absorption photometers in the λ = 2.5-8 µm wavelength range can 

measure up to 4 compositions using 1 or 2 beam paths and 1 or 2 receivers per beam path in one gas

path or two independent gas paths.

Measure up to 4 components in one gas path or two independent gas paths with 1 or 2 receivers per

beam path.

Impact Effects

Flow rate effects

Flow rates in the range of 20-100 liters/hour: within the detection range

Correlated gas effects/cross sensitivity

Analyzer configuration must be aware of sample gas composition.

Selective measures to reduce associated gas effects (optional): Installation of interference filters or filter

units, internal electronic cross-sensitivity correction of one sample component by other sample

components measured by the gas analyzer.

Functional range and ordering

– Analog output module with 2 analog outputs,

– Analog output module with 2 analog outputs, digital input/output module with 4 digital inputs and 4

digital outputs and

Digital input/output module with 4 digital inputs and 4 digital outputs and

– Modbus modules with RS485 and RS232 interfaces.

Housing design

The EL3020 Gas Analyzer is designed in a 19-inch housing with 3 height units and IP20 protection.

Description of Analyzer Performance Characteristics

The performance characteristics of the analyzers are defined according to the international

standard IEC 1207-1:1994 “Performance statements for gas analyzers”.

They are based on N2 as a companion gas. When measuring other gas mixtures,

compliance with these characteristics can only be ensured if their composition is known.

Electrochemical oxygen sensors can only be used in combination with the Uras26 infrared photometer.

Magnos206 Oxygen Analyzer and Caldos27 Thermal Conductivity Analyzer can also be used.

Can also be used in conjunction with the Uras26 Infrared Photometer.

Integral air inlet

The integral air inlet (option) is available in two versions. It includes

– Microfilter and flow sensor module

– or microfilter, solenoid valve, pump, coarse filter, capillary tube and flow sensor module.

Electrical interface

Electrical interfaces for outputting measured values and communicating with external systems

include Electrical interfaces for communicating with external systems include:

– Integrated Ethernet-10/100BASE-T interface (for service and configuration and configuration)

Integrated Ethernet-10/100BASE-T interface (for service and configuration purposes) 

Power System Stabilizer (PSS)

PSS can be an option to provide standard IEEE

421.5-2005 2A/2B/2C function. The PSS provision

is nowadays included in most grid codes. The PSS

is used for effective damping

of power oscillations caused by the physical power grid.

Software upgrades can be ordered and easily

enabled by password over the CMT1000. even

while the unit is in operation.

Common software and tool for the complete

UNITROL® 1000 product portfolio:

All UNITROL® 1000 products are based on

the same target software source code,

therefore equal performance can be seen with

UNITROL® 1010/20 as well as with UNITROL® 1005.

The same simulation models can be used for the

entire UNITROL® 1000 product family, making

UNITROL® 1000 products suitable for very

demanding grid code applications.