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Programmable protection thresholds

Programmable thresholds allow you to protect the

capacitor bank against over- and under-voltage, over

temperature and excessive harmonic distortions.

Network information and capacitor bank monitoring

The RVT computes and displays network and capacitor

bank information such as voltage, current, harmonics

spectra and much more.

Multi-language support

The RVT allows you to choose its working language

between English, French, German, Spanish and Chinese.

Digital inputs

Two digital inputs can be used for day/night power factor and

external alarm respectively.

Two alarm relay outputs and fan / warning output

RVT has two alarm relay outputs (NO and NC) and a FAN/

Warning relay output.

High ambient temperature rating

The RVT is suitable for harsh ambient environments thanks to

its maximum ambient temperature rating of 70°C.

Multi-voltage and multi-frequency

The RVT may be connected to network voltages in the range

100-460Vac, 50/60Hz. RVT’s measurement voltage is up to

690Vac without connecting any additional PT.

Works with 5A and 1A CT’s

Both 5A and 1A CT’s may be connected to the RVT.

Digital inputs

Two digital inputs can be used for day/night power factor and

external alarm respectively.

Two alarm relay outputs and fan / warning output

RVT has two alarm relay outputs (NO and NC) and a FAN/

Warning relay output.

Other powerful features

RVT is also a MV and HV bank controller

By connecting a PT to the RVT voltage measurements inputs,

and setting the proper [V scaling] according to the PT ratio,

the RVT is able to control a MV or HV capacitor bank just like

a LV capacitor bank.

Easy commissioning

The fully automatic set-up of the RVT parameters totally eases

the bank commissioning process.

Menu navigation

The clever organization of menus and sub-menus ensures

menu navigation easy and intuitive.

Guided navigation and programming

Online help information guides you step by step in the menu

navigation and RVT programming.

Communication

RVT has versatile communication interfaces: in addition to

Ethernet 10/100BASE-T and USB2.0. the RVT supports

RS485 connection as well. All parameters settings and

measurements are accessible remotely.

Fully automatic set-up

C/k (sensitivity), active outputs, switching sequence and

phase shift can be automatically set-up.

Touch Screen

3.5 inch colorful QVGA touch screen eases your parameter

settings.

Ethernet connection

With ABB PQ Link software, you may easily plug an RJ

45 to RVT and communicate with the controller through a

10/100BASE-T interface anywhere in the world.

USB connection

RVT supports USB2.0 connection; which makes it possible to

connect to a computer via a widely used USB cable to access

all RVT parameters.

Up to 8 Temperature alarm outputs

RVT can monitor 8 hot spots in your bank through eight

daisy-chain connected temperature probes.

Real time clock

RVT real time clock tracks and logs date and moment of each

alarm and event.

Hardware and software lock

Both hardware and software locks are equipped in the RVT

for bank setting protections from any unauthorized access.

Distinct features

Power factor correction for both balanced and

unbalanced loads

In modern day installations, unbalanced loads are increasingly

common, especially in residential or commercial buildings.

RVT addresses your power factor issues from both single

phase loads (L-L or L-N) and three phase balanced/

unbalanced loads. RVT is capable of compensation to

each phase individually or compensation to three phases

globally. Another distinct feature of RVT is individual phase

measurements and energy calculations.

Complete three phase measurements

− Active power (kW) – 3ph/1ph

− Apparent power (kVA) -3ph/1ph

− Reactive power (kvar) -3ph/1ph

− Reactive power (kvar) to reach the target cos ϕ -3ph/1ph

− Voltage (V) -3ph/1ph

− Current (A) -3ph/1ph

− Cos ϕ-3ph/1ph

− Total Harmonic Distortion on Voltage/Current : THD V/I (%)

− Voltage/Current Harmonics : H2 up to H49 (%-spectrum)

Advanced diagnostics, in accordance with NAMUR NE107.

classify alarms and warnings as ‘Maintenance Required’,

‘Check Function’, ‘Failure’ and ‘Out-of-Specification’. Cell

performance is monitored by the transmitter; indicators such as

cell impedance, rate-of-response to test gasses and changes in

calibration offset/factor are recorded and analyzed. The current

cell ‘quality’ is displayed by the transmitter as a visual indication

of the measurement confidence; providing the operator all the

information required to keep the monitor operating at peak

performance.

The Performance Log holds up to 100 time-stamped events.

When the log is full, the oldest data is overwritten by new

entries. The log contains details of measurements and

coefficients for all calibrations and accuracy checks.

2 Relay outputs and a traditional analog output are fitted as

standard, with the option of adding a second analog output or 2

digital inputs/outputs (I/O).

The Endura AZ20 transmitter is equipped with HART

communication as standard, supported by a full Device Type

Manager (DTM) to enable remote access to the analyzer through

a user-friendly graphical interface. The DTM provides full access

to the transmitter setup, logged data and diagnostics

information as well as live data.

The IrDA standard infrared communication port can also be

used with the DTM to upload and download device

configurations. In addition, it enables data logged values and

diagnostics to be viewed on a hyperterminal interface or a PC.

The device’s firmware can also be upgraded using this port.

Flow Rate Control using Flow Restrictors

The flow rates of test gas and reference air are important to the

accurate operation of Zirconia-based oxygen analyzers and,

traditionally, control has been achieved using ancillary

flowmeters and flow control valves.

The Endura AZ20 offers a new approach with the inclusion of

optional flow restrictors. These are fitted within the probe to

control the flow rate of the reference air and test gasses,

removing the need for additional flowmeters fitted with flow control valves.

This innovative approach enables the gasses to be controlled by

pressure only. 1 Bar (15 psi) is applied directly to the probe’s gas

ports and the correct flow rate is then set by the flow restrictors.

Unique Integrated Automatic Calibration

The all new Endura AZ20 automatic calibration system

eliminates the need for the expensive ancillary equipment

required for automatic calibration on traditional flue gas oxygen

analyzer systems. ABB’s fully integrated, automatic calibration

feature controls the test gas sequence and detects test gas

availability, eliminating incorrect calibrations due to loss of test gas.

Advanced Design

Designed and manufactured to exacting standards, the Endura AZ20 ensures long periods

of trouble-free operation in even the most arduous of applications.

The operating process temperature of up to 800 °C (1472 °F) extends system suitability

into previously impossible applications and enables optimum probe location within the process.

The modular design, with reduced component count, improves the robustness and 

reliability of the system and simplifies routine maintenance and servicing.

Complete traceability ensures only the highest quality materials are used in the analyzer’s

construction and rigorous manufacturing, inspection and testing procedures

(to international standard ISO 9001) result in a monitor of superior quality with prolonged probe life.

Easy Cell Release

The Endura AZ20 probe has retained the easy-access cell arrangement of the previous generation ZFG2 probes.

 Cell replacement can be performed on-site using basic hand tools;

even after long periods of high temperature operation where screw threads have ‘seized’ and can no longer be released.

Kits containing all the parts needed to complete maintenance are available

from ABB to ensure a technician can perform services quickly, efficiently and at minimum cost.

Easy Cell Release

The Endura AZ20 probe has retained the easy-access cell arrangement of the previous generation ZFG2

probes.

 Cell replacement can be performed on-site using basic hand tools;

even after long periods of high temperature operation where screw threads have ‘seized’ and can no

longer be released.

Kits containing all the parts needed to complete maintenance are available

from ABB to ensure a technician can perform services quickly, efficiently and at minimum cost.

Proven Cell Design

ABB’s metallurgically bonded, multi-layer electrode technology increases

the cell’s resistance to sulphurous and reducing atmospheres and high temperature operation.

This extends the life-cycle of the cell in the most arduous applications such as sulphur recovery processes,

crematoria and industrial/clinical waste incineration.