CT Lab Vecto III User manual

© CT LAB (2022)
Vecto III®
Multi-function Power, Power Quality
and Micro Synchrophasor Recorder
User Manual
Version 1.11
CT LAB (PTY) LTD
PO Box 897, Stellenbosch, 7599, South Africa
Unit 301 Datavoice House, 16 Electron Rd, Techno Park, Stellenbosch, 7600, South Africa
Tel: [phone]
Fax: [phone]
Email: [email protected]
Web: www.ctlab.com

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Table of Contents
1Safety Instructions 8
1.1 Symbols...................................................................................... 8
1.2 Safety Standards Compliance ..................................................... 9
1.3 General Safety Information ........................................................ 9
1.4 How to Mitigate Risks............................................................... 11
1.4.1 Always earth the device first .................................................. 11
1.4.2 Install external shorting blocks............................................... 11
1.4.3 Locking of terminal plugs........................................................ 11
1.4.4 Use of external fuses or circuit breakers ................................ 11
1.4.5 Provide surge arrestors........................................................... 11
1.5 Statements and Notices............................................................ 12
1.5.1 Statement of reliability ........................................................... 12
1.5.2 Proprietary rights.................................................................... 12
1.5.3 Copyright ................................................................................ 12
1.5.4 Trademarks............................................................................. 12
2Introduction to the Vecto III 13
2.1Vecto III Product Description.................................................... 13
2.2 Receiving your Vecto III ............................................................ 13
2.2.1 Receiving your shipment ........................................................ 14
2.2.2 Unpacking the goods .............................................................. 14
2.2.3 Checking the Battery Level ..................................................... 14
2.2.4 Return shipment..................................................................... 15
2.3 Device Overview....................................................................... 16
2.3.1 Key Features ........................................................................... 16
2.3.2 Vecto III External Interfaces.................................................... 18

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2.3.3 Power sources ........................................................................ 18
2.3.4 Communication ...................................................................... 19
2.3.5 Built-in HMI (Web Interface) .................................................. 19
2.3.6 Osprey Pro (Enterprise Support) ............................................ 19
2.3.7 Sampling Rate......................................................................... 20
2.3.8 The 1/6th Sense....................................................................... 20
2.3.9 Event Recording...................................................................... 20
2.3.10 10/12-Cycle Block Recording .................................................. 21
2.3.11 Variable time interval trends.................................................. 21
2.3.12 Synchrophasors ...................................................................... 21
2.3.13 Trended RMS & Fundamental Parameters............................. 22
2.3.14 Trended Power Parameters.................................................... 24
2.3.15 Trended Individual Harmonic/Interharmonic Parameters ..... 25
2.3.16 Technical Specification ........................................................... 26
2.4 Vecto III External Interfaces...................................................... 29
2.4.1 Physical Appearance............................................................... 29
2.4.2 Vecto III User Interface ........................................................... 31
2.4.3 Power Supply.......................................................................... 31
2.4.4 Voltage Inputs......................................................................... 34
2.4.5 Current Inputs......................................................................... 36
2.4.6 Current Transducer Inputs...................................................... 38
2.4.7 Relay Outputs ......................................................................... 40
2.4.8 Digital inputs........................................................................... 41
2.4.9 GPS.......................................................................................... 43
2.4.10 Ethernet Ports......................................................................... 43
2.4.11 USB Peripheral Port ................................................................ 44
2.4.12 WIFI......................................................................................... 45
2.4.13 Built-in GPRS Modem (Optional) ............................................ 45

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2.5 Firmware.................................................................................. 45
2.5.1 Upgrading ............................................................................... 45
3Operating Instructions 46
3.1 Precautions when first using the device ................................... 46
3.2 Toggling Storage/Ready Mode ................................................. 46
3.3Interpretation of Status LEDs.................................................... 47
3.4 Powering up the Vecto III device .............................................. 48
3.4.1 Powering up from Storage Mode ........................................... 48
3.4.2 Powering up from Ready Mode.............................................. 48
3.5 Shutting down.......................................................................... 49
3.6 HMI (Web Interface)................................................................. 49
3.6.1 HMI Features .......................................................................... 50
3.6.2 HMI User Documentation....................................................... 50
3.7 Error Conditions ....................................................................... 51
3.7.1 Health Failure Conditions ....................................................... 51
3.7.2 Recovery conditions ............................................................... 51
4Vecto III Installation 52
4.1 Mounting the Vecto III.............................................................. 52
4.1.1 Panel Mounting Installation ................................................... 52
4.1.2 19” Rack Mounting Installation .............................................. 53
4.1.3 DIN rail mounting ................................................................... 54
4.2 Connections.............................................................................. 54
4.2.1 AC Power ................................................................................ 54
4.2.2 Power Over Ethernet .............................................................. 55
4.2.3 Voltage connections ............................................................... 55
4.2.4 Current connections ............................................................... 60
4.2.5 Ethernet Based Communication............................................. 65

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4.2.6 GPS.......................................................................................... 65
4.2.7 WiFi......................................................................................... 65
4.2.8 Modem ................................................................................... 65
5Maintenance 65
5.1 Battery ..................................................................................... 65
5.2 Transport.................................................................................. 65
5.3 Storage..................................................................................... 66
5.4 Warrantee and Repair .............................................................. 66
5.4.1 Warrantee Statement............................................................. 66
5.4.2 Technical Support ................................................................... 67
5.4.3 Sales Assistance ...................................................................... 68
5.4.4 Repair and Calibration ............................................................ 68
5.4.5 Disposal................................................................................... 69
Appendices 70
1Vecto III dimensions.......................................................... 70
2Vecto III wiring diagram .................................................... 71
3Vecto III Top View ............................................................. 72
4Vecto III Purchase Options................................................ 73
5Glossary ............................................................................ 79
6Symbols and Abbreviations .............................................. 80

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List of Figures
Figure 1: Front view of the Vecto III device .................................................................12
Figure 2: Packaging Opened.........................................................................................13
Figure 3: Front view of the Vecto III device .................................................................29
Figure 4: Rear view of the Vecto III device...................................................................30
Figure 5: Right-hand view of the Vecto III device ........................................................31
Figure 6: User Interface ...............................................................................................31
Figure 7: Vecto III power supply connection................................................................32
Figure 8: Ethernet ports...............................................................................................33
Figure 9: Vecto III 4-wire star connection....................................................................35
Figure 10: Vecto III 3-wire delta connection................................................................35
Figure 11: Current sensor connection..........................................................................37
Figure 12: Current transducer connection...................................................................38
Figure 13: Relay switch connection layout ..................................................................40
Figure 14: Digital inputs connection layout .................................................................41
Figure 15: Digital input configuration for a dry contact...............................................42
Figure 16: Digital input configuration for a wetted contact ........................................42
Figure 17: GPS antenna connector ..............................................................................43
Figure 18: Ethernet ports.............................................................................................44
Figure 19: USB port......................................................................................................44
Figure 20: WiFi and Cellular Modem Connections.......................................................45
Figure 21: Status LEDs, On/Off button and Power Button...........................................48
Figure 22: Vecto III back as supplied by CT LAB ...........................................................52
Figure 23: Surface mount Vecto III ..............................................................................53
Figure 24: 19’’ Plate Mounting.....................................................................................53
Figure 25: Vecto III rear view as shipped by CT LAB ....................................................54

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Figure 26: Vecto III rear view when Din rail mountings are to be used.......................54
Figure 27: Vecto III AC power supply connection ........................................................55
Figure 28: Vecto III single-phase connection ...............................................................56
Figure 29: Vecto III 4-wire star connection..................................................................58
Figure 30: Vecto III 3-wire delta connection................................................................59
Figure 31: CT circuit connection layout .......................................................................60
Figure 32: CT circuit connection layout .......................................................................61
Figure 33: CT circuit connection layout .......................................................................63
Figure 34: CT circuit connection layout .......................................................................64

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1Safety Instructions
This section provides information on safe handling, installation and commissioning of
the Vecto III. Before carrying out any work on the equipment the user should be
familiar with the contents of this document.
Reference should be made to the device’s wiring diagram and the ratings before
any installation can commence.
1.1 Symbols
1.
Notice
Used to call attention to important information.
Caution
Used to indicate operating or maintenance procedures to
be respected in order to prevent damage or destruction of
equipment.
2.
Warning
Used to call attention to potentially dangerous situations
or danger in general, that requires specific procedures to
be respected in order to prevent personal injury.
AC/DC
Both Direct Current (DC) and Alternating Current (AC)
Safety Earth
Safety Earthing Terminal
Hazardous
Voltage
Hazardous Voltage Present

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Battery On
Battery is connected to the device
Battery Off
Battery is disconnected form the device
CE Certified
Chartered Engineers (CE) Certification
ETL Certified
Electrical Testing Laboratories (ETL) Certification
1.2 Safety Standards Compliance
The device complies with the IEC61010-1 safety standard:
•Pollution: Degree 2
•Over-voltage category: CAT III
•Measurement category: CAT III
The device complies with the IEC60529 protection standard:
•Penetration of dust & water: Class I
•IP Rating: IP52
•Inadvertent contact
1.3 General Safety Information
Installation and maintenance of the device should only be performed by a qualified
and certified electrician/technician with appropriate training and experience with
high voltage and current devices.

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The device must be installed in accordance with the approved national electrical
codes.
If the device is used in a manner not specified by the manufacturer, protection from
electric shock, fire, etc. provided by this equipment may be compromised.
When the device is in operation, hazardous voltages will be present in certain parts of
the equipment. Failure to observe warning notices, incorrect use, or improper use may
endanger personnel and the device may cause personal injury or physical damage.
The terminals exposed during installation, commissioning and maintenance may
present a hazardous voltage. Failure to properly earth the device will compromise the
correct functioning of the internal protection circuitry and may create a risk of electric
shock, injury or death.
Standard safety precautions must be followed while performing both the installation
and service work. The user must inspect the device and all accessories before use;
special attention must be given to the following:
•Damage to the device and accessories that might compromise personal
safety or risk to the installation.
•The operational rating of the input terminals
Do not expose the device to abnormal environmental conditions exceeding the
requirements for IP52.
The digital outputs are not intended for use within primary protection circuits.
Vecto III is intended for indoor installation and use only. If it is required for use in
an outdoor environment, then it must be mounted in a specific cabinet or housing
which will enable it to meet the requirements of IEC 60529 with the classification
of degree of protection IP52.
Do not use the device in situations where failure of the device can cause injury,
death, or cause sufficient energy to be released that may start a fire.

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1.4 How to Mitigate Risks
1.4.1 Always earth the device first
It is recommended to always earth the device first before making any other electrical
connections. This ensures the device casing to be at the same potential of the safety
environment and will eliminate the risk of electric shock. At the same time it improves
signal quality by providing a return path for all built-in Electro Magnetic Interference
(EMI) filters.
1.4.2 Install external shorting blocks
Install external shorting blocks on Current Input Circuits (CT). The output of
conventional 1A/5A CT circuits may not be interrupted (opened) when under load. It
is recommended to install external shorting blocks to allow users to first short out the
CT circuits prior to device installation and in the event of device replacement.
1.4.3 Locking of terminal plugs
Lockable plug terminals are provided with each device. Please ensure that all locking
screws are secured during installation. This will ensure that current input circuits are
not accidentally opened under load and it will reduce risk of electrical shock.
1.4.4 Use of external fuses or circuit breakers
It is recommended to install external fuses or circuit breakers on all voltage inputs and
on the mains supply input. It simplifies device installation and it keeps the installation
save and hazardous free in the event of device replacement.
1.4.5 Provide surge arrestors
It is recommended to install external surge arrestors on all voltage inputs and on mains
supply input on installations that is located in a high lightning area. It is also
recommended to properly earth all antennae as well as external routers or other
communication equipment. This will significantly improve system reliability and will
reduce the possibility of electrical shock or equipment failure.

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1.5 Statements and Notices
1.5.1 Statement of reliability
The information in this manual has been reviewed and is believed to be entirely
reliable, however, no responsibility is assumed for any inaccuracies. All material is for
informational purposes only and is subject to change without prior notice. Please see
www.ctlab.com for the latest copy of this document.
1.5.2 Proprietary rights
This publication contains information proprietary to CT LAB (PTY) LTD. By accepting
and using this manual, you agree that the information contained herein will be used
solely for the purpose of operating equipment of CT LAB (PTY) LTD.
1.5.3 Copyright
No part of this publication may be reproduced, transmitted, transcribed, stored in a
retrieval system, or translated into any language or computer language, in any form,
by any means, electronic, mechanical, magnetic, optical, chemical, manual, or
otherwise, without the prior written consent of CT LAB (PTY) LTD, Unit 301, Datavoice
House, 16 Electron Rd, Techno Park, Stellenbosch, 7600, South Africa.
1.5.4 Trademarks
Impedo DUO, Vecto II, Vecto III, Osprey Lite, Osprey Pro, Xross-Trigger, Snapshot and
6th-sense are registered trademarks of CT LAB (PTY) LTD.
Figure 1: Front view of the Vecto III device

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2Introduction to the Vecto III
This chapter introduces the Vecto III®. The latest version of this document is shipped
with the device, but all new releases are available at www.ctlab.com.
2.1 Vecto III Product Description
The Vecto III a comprehensive multi-function IEC 61000-4-30 Class power quality
recorder with GPS-locked time synchronisation.
It is a single feeder device, as opposed to the dual feeder Impedo DUO, and has 4 x
voltage, 4 x current sensor and 4 x powered current transducer inputs. The Vecto III
has an on-board GPS, 2 x Gigabit Ethernet ports, a USB2.0 (HS) expansion port, 4 x
digital inputs (5V power available) and 4 x digital outputs.
2.2 Receiving your Vecto III
The Vecto III packaging is shown Figure 2 with the high-density foam cavity for the
Vecto III and the accessories supplied with the device.
Figure 2: Packaging Opened

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2.2.1 Receiving your shipment
Upon receiving your Vecto III shipment, check the following:
•Outside
oBox is sealed
oBox is not damaged
oBox has no water damage
•Inside
oVecto III in a plastic enclosure
oVecto III has no water damage or damp in the plastic enclosure
oEthernet cable, Flash drive and the screwdriver is included in the box
If the shipment is damaged or not in a working condition, please take a picture of the
damage and send the pictures to [e-mail] as soon as possible. Please also
phone CT LAB on [phone] to handle the problem as soon as possible.
2.2.2 Unpacking the goods
Step
Action
1
Remove all literature inside the box on top of the high-
density foam
2
Remove the accessories in the accessories cavity on the
right side of the box. Check that the standard accessories
(see section 2.2.1) are included.
3
Carefully remove the lid of the high-density foam
enclosure
4
Remove the Vecto III from the cavity and inspect for
damage
2.2.3 Checking the Battery Level
After calibration and testing, the Vecto III is switched off by means of the Power
Button. It disconnects the battery.
•The device will not power up from the battery until mains power is
connected to the device for the first time.
When the device is connected to mains power (90-300V AC or DC) press the Power
button, check that the power LED starts to flash and that the battery charge LED is on.

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•If the battery LED is switched off the battery is fully charged.
The device will not power up from the battery until mains
power is connected to the device for the first time
2.2.4 Return shipment
Should the device be returned to CT LAB for calibration or repairs please follow these
instructions:
•Insert the device into a plastic bag to prevent water damage during
shipment transit; and
•Protect the device properly and also put it inside a padded box to prevent
mechanical damage during transit.
•Complete the fault report and sent it and the device to CT LAB.
•Notify [email protected]om, provide details on the device and how it was shipped
and how it can be tracked and with a copy of the fault report.
The package and device remain the responsibility of the client
until delivered to CT LAB.

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2.3 Device Overview
2.3.1 Key Features
The Vecto III records both voltages and currents of a single 3-phase feeder with IEC
61000-4-30 Class A performance.
•Voltage inputs:
•Class A performance over all of the input range inclusive of 63.5 V (if L-N
measurements are done in a 110 V line-line VT circuit)
•6 terminals are used for 4 voltage input channels with maximum input
ratings of 600 V.
oThe first 4 terminals connect 3 different phase voltages such as in a
3-phase system.
oInput channel 1-3 is referenced to a neutral (4th terminal)
connection. This 4th terminal acts as a reference channel and can be
any phase voltage if a 3-phase line-line voltage circuit is measured.
oIf it is a 3-phase line-neutral voltage circuit, then the 4th terminal
will be connected to the neutral voltage.
oThe 5th and 6th terminal is the 4th channel and a fully differential (2
terminal) input channel.
•Current inputs:
•4 X 1/5 A CT inputs
•4 X 1 Vrms differential voltage transducer inputs with a 5 V power supply
(to be used to power Rogowski coils).
•Digitisation of input signals
•500 kHz sampling of primary input signals.
•50 kHz is digitally retained and subjected to the IEC 61000-4-30 Class A
signal processing requirements.
•Power supply
•PoE and/or a 90-300 V AC/DC power factor corrected power supply.
•1/2 hour power failure ride-through via an internal LiFePO4battery.
•Data storage

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•4 GB on-board storage providing data storage of all IEC 61000-4-30
voltage and current 10-minute values up to the 63rd harmonic
component.
•Time stamping
•GPS time synchronization resulting in a time-stamping certainty better
than 1 µs.
•PTP time synchronization resulting in a time-stamping certainty better
than 100 µs.
•NTP time synchronization as an option.
•Communication
•Communication is via Ethernet.
•Modbus over Ethernet.
•DNP3 over Ethernet.
•IEC 61850 –optional.
•Advanced triggering
•User-configurable triggering between different devices: the patented
Xross-Trigger feature (Described in the Osprey Lite user manual)
•Configuration of device
•The Vecto III has to be configured by means of an Ethernet connection to a
local laptop with Osprey Lite installed.
•Data analysis and reporting
•Osprey Lite is supplied free of charge and continuously updated.
•Download from www.ctlab.com.
•It generates both NRS 048 and EN 50160 PQ reports.
•It allows basic and advanced analysis of PQ waveform events and
trends.
•Data can be exported to in .csv and PQDIF format for additional analysis
in third party software packages.
•Data downloading can be automated by configuration of the Vecto III
with Osprey Lite.

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2.3.2 Vecto III External Interfaces
2.3.2.1 Voltages
The voltage inputs to the Vecto III interface directly to 110 V VT circuits or directly to
a mains connection, which has to be less than 600 V line to neutral.
•Voltage measurements are differential.
•6 input terminals for voltages are used.
•The first 4 terminals are used for 3 voltage inputs V1, V2and V3and are
neutral (Vcom) referenced (V1-N, V2-N, V3-N).
•Input channel 1-3 is referenced to a neutral (4th terminal) connection. This
4th terminal acts as a reference channel and can be any phase voltage if a 3-
phase line-line voltage circuit is measured.
•If it is a 3-phase line-neutral voltage circuit, then the 4th terminal will be
connected to the neutral voltage.
•The 5th and 6th terminal is the 4th differential channel.
•It can be used to for example measure the difference between neutral and
earth.
2.3.2.2 Currents
Permanently installed 1 A or 5 A CT’s, or clamp-on CT’s interface directly to the
galvanically isolated current inputs.
The device calculates the “missing current” by assuming the sum of all currents is zero.
(Please refer to Section 2.4.5 for more info)
Alternatively, 1 VRMS voltage output current transducers or Rogowski coils with 5 VDC
power supply can be used to measure current.
Current to voltage transducers can interface directly to 4 low voltage differential
inputs. (Please refer to Section 2.4.6 for more info)
2.3.3 Power sources
The device is powered from a power factor corrected AC supply input (90–300 V
AC/DC).
It can also be powered from an IEEE 802.3-2008 compliant PoE Plus (< 12 W) source.

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The internal LiFePO4battery powers the device in the absence of power. This battery
guarantees 2,000 charge/discharge cycles. If cycled once per day, it translates to at
least a 5-year useful life.
Please refer to Section 2.4.3 for more detail.
2.3.4 Communication
Two (2) Gigabyte Ethernet ports facilitate local and networked external
communication. One port is used to interface with corporate networks (DHCP or fixed
IP support). The second Ethernet port is used to create a local network by means of
being a local DHCP server. Please refer to Section 2.4.10 for more detail.
The Vecto III supports WIFI communication. Please refer to Section 2.4.12 for more
detail. The Vecto III has an optional built-in cellular modem. Please refer to Section
2.4.13 for more information.
The remote support software supports automatic service discovery protocols. Laptops,
when connected to the Vecto III, will receive an IP from the device. The remote support
software can automatically discover which devices are connected to the local network.
Please refer to the Osprey LiteTM user manual for more information.
2.3.5 Built-in HMI (Web Interface)
The Vecto III provides the user with a human-machine interface in the form of a built-
in secure web application. Via this interface the Vecto III can be configured, inspected,
and downloaded.
2.3.6 Osprey Pro (Enterprise Support)
When connected, each device automatically establishes a permanent secure
communication link to a corporate server (local or internet based). An device
management system (IMS) keeps track of each device’s location, configuration, health
(telemetry) and PQ data recorded.
Downloading of data is automated and recorded data can be accessed via the Internet
in graphical, tabled and report form as and when it becomes available. Raw data can
be analysed in Osprey LiteTM or exported for further analysis in for example Microsoft
ExcelTM or MatlabTM.
Osprey LiteTM simplify the analysis of waveform events such as dips and swells by the
time-aggregation of multiple waveform events to single network incidents.

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Osprey LiteTM classify and report on recorded data according to industry standards
such as NRS048, EN50160 and IEE1158. All communications are encrypted and each
device is password protected. More information can be obtained at ospreypro.com.
2.3.7 Sampling Rate
The device samples all analog input signals at a rate of 500 kHz (10 000 samples per
cycle) and then digitally down-sample the data to 50 kHz (1000 samples per cycle). All
IEC 610000-4-30 parameters are calculated based on this 50 kHz resolution for both
voltage and current.
Waveform and other events are triggered from the 500 kHz digitised waveforms.
These waveforms are locked to the fundamental frequency to prevent multiple zero
crosses.
Captured waveform data can be further subsampled to reduce stored data size. The
user can configure the waveform-sampling rate from 1 kHz to 50 kHz.
Please refer to the Osprey LiteTM user manual for more information on selecting the
down-sampling rate.
2.3.8 The 1/6th Sense
The Vecto III calculates a complete set of 1-cycle sliding RMS and fundamental phasor
parameters on each of the 3 voltage phases resulting in a resolution of 6 values per
cycle per phase. The IEC 61000-4-30 Class A requirements are based on a ½ cycle
sliding approach. This higher resolution data improves the detail of the event profile
and enable more accurate depth/duration calculations.
Please refer to the Osprey LiteTM user manual for more information on 1/6th cycle data.
2.3.9 Event Recording
Users can customise the recording of an event. The IEC 610000-4-30 definition of for
example a dip event, can be changed to improve the understanding of phenomena of
concern.
Upper and/or lower thresholds to define an event can be set by the user based on
waveform, 1/6th sense, 10/12-cycle block and aggregated parameters.
Single-phase and multiple-phase triggers can be defined.
When a threshold is exceeded, the Vecto III will retain pre- and post-diagnostic
information of the event.
Please refer to the Osprey Lite user manual for more information on event recordings.