Contents

About company.....................................................................2

OHL Fault Indicators Range...................................................3

Lodestar IKZ-V1........................................................................4

Lodestar IKZ-V2........................................................................4

Lodestar CL25..........................................................................5

Lodestar CL2............................................................................5

Lodestar CL0.5.........................................................................6

Technical characteristics.......................................................7

Solutions for Remote Monitoring............................................8

Communication unit Lightbox...............................................8

Communication unit Smartbox.............................................8

Remote Сontrol.......................................................................9

Cable Fault Locator IKZ-K4...................................................10

Cable Fault Locator A-Signal...............................................11

KOMORSAN monitoring software........................................12

OLTC Position Monitors UP....................................................13

OLTC Controllers UP 100 and UP 200...................................14

Transformer Tap Sensors DP.................................................15

Tap Sensor DP-3.....................................................................15

Tap Sensor DP-4.....................................................................16

Tap Sensor DP-5.....................................................................16

01

02About companyA3 Group consists of three companies, within developing and deploying smart grid diagnostics and automation systems. A cooperation providing you with simple solutions in terms of the power system reliability enhancement.

A3 Group has a wide experience within the energy segments, covering design, construction, manufacturing, installation and service. In close cooperation with the customers, our engineers provide optimal solutions that satisfy the requirements from generating and distributive power organizations. Our engineers graduated from the best universities of the country.

Our products meet the highest quality requirements. We have own research and development department, SMD assembly lines, testing and measuring equipment, mechanical production facility and other manufacturing lines. The worldwide distribution is covered by highly qualified sales force and trade agents. Our main distributor is switzerland's company Streamer AG - www.streamer-electric.com.

A3 Group provides integrated monitoring systems for the overhead lines and underground power cableswhich are user friendly and include various application modules. This solutions greatly simplify a control engineer's work. Our devices operates in networks with isolated, compensated and solidlygrounded neutral.

For reliable operation of equipment of power substations we provide OLTC Position Monitors and OLTC Controllers. Our devices can work together with extremely large range of the On-Load Tap Changers and can be used anywhere. Using our devices you can get position information and control OLTC electrical drives under automatic regulation of power transformers transformation ratio.

Our devices have European certificates of quality and are tested for steady work in difficult conditions in Russian and Swiss laboratories. Our solutions realize technologies of the future to make your energy really reliable and effective.

Our solutions help to increase reliability of resource companies’ power grids where every minute of equipment downtime bears considerable losses. We implemented our systems in the oil, gas and gold mining companies. Modern resource processing enterprises, for example, steel factories and refineries with its own power grids, also use our equipment for transformer substations and cable lines monitoring.

03

Lodestar is an overhead line fault indicator that helps lineman to determine the origin a faults on the line. Superbright white and red LEDs allow them to locate faulty sections. Lodestar can send information to SCADA-server 3G/4G.

Product Features of Lodestar Range:• 6 kV to 70 kV line voltage

• High sensitivity — locate faults from 0.5 A

• Pole or conductor mounted

• Works in insulated, compensated or effectively grounded networks

• Shows the faulty phase and directs to the faults

• Superbrights LED with 360 degrees of visibility and GSM сommunication

• 10-year battery

• Live line installation

OHL Fault Indicators Range

04

Lodestar IKZ-V1 benefits:

• Line powered by energy harvesting technology — no need for batteries and/or external power

• Configuration free

• Auto adjustable current threshold

IKZ-V1 is a short circuit indicator for overhead line. It is a pole mountable device with an electromagnetic flag. It is intended for use in distribution networks 1-36kV. IKZ-V1 connects to OHL conductors with standard isolators for power harvesting and voltage measurement.

Lodestar IKZ-V1

Lodestar IKZ-V2x

IKZ-V2x is a device with an electromagnetic flag. It is intended for use in distribution networks 1-36kV.There are two modifications suitable for use in different situations:IKZ-V21 mounts on the pole about 5 meters lower the conductors. IKZ-V23 mounts on the pole between the conductors.IKZ-V23 has higher sensitivity and functionality than IKZ-V21, but IKZ-V21 is more suitable for usage among wide conductors geometry variants.

Lodestar IKZ-V2x benefits:

• Easy to install — pole mounted with SIP mounting tape

• Supplied from 7-year battery — no are additional connections to the line required

• Communication option - 3G data transmission to KOMORSAN system

05 Lodestar CL25

Optimal factory settings allow it to use Lodestar without any configuration in most cases. Just activate the device and place it on a conductor - CL25 will do its job in the best way possible.

Lodestar CL25 benefits:

• Brightest Light 360° Visibility — 3 ultra-bright wide-angle LEDs provide overlapping fields of light.

• Identifies Temporary and Permanent Faults — The distinct temporary (single blink) and permanent (triple blink) fault indication patterns provide the flexibilty of locating the cause of permanent and self-clearing faults.

• CL25 is capable of dynamically changing the sensivity based on a load current. It can detect faults with as litle as 25 A phase current when loads are light and automatically increase its trip threshold to remain secure for up to 700 A loads.

• Auto-Detect Network Frequency — intellectual algorithms allow it to work in networks with frequency of 50 or 60Hz without reconfiguration

Lodestar CL2 benefits:

• Vector calculations — synchronous measurement of currents allows Lodstar to deal with phases as well as magnitudes.

• Flexible configuration — a rich set of configurable parameters allows to adapt to a variety of customer needs

Lodestar CL2Lodestar CL2 can be integrated into an existing SCADA or smart grid system and can operate in various communication environ-ments. A pole mounted concen-trator receives and manages all Lodestar data and acts as an ac-cess point to a communication environment.

Lodestar CL0.5

Lodestar CL0.5 benefits:• High sensitivity — shows faults from 0.5 A

• Detecting direction — a directional earth fault detection is only useful method of a fault location in networks with low PtG currents

• Auto adjustable PtG detection - no need to tune residual current threshold

• All the benefits of CL2

Lodestar CL0.5 was designed to work in isolated and compensated networkswith extremely low level of residual currents. This requires indicators to have unique data analysis algorithms. Real time sensors communication give wide abilities of data analysis.

06

• Communication Options — Lodestar CL2 supports a range of communication options, including 3G or 4G LTE communications for a high speed data transfer

• Event memory — CL2 is capable of registering and storing the fault information like timestamp, event type and measured values

Model Lodestar CL25 Lodestar CL2 Lodestar CL0.5

Operating voltage, kV <70 <70 <70

MIN fault sensing, A 25 2, but min 4%

of ILOAD0.5

Absolute current threshold

100 А, 250 А, 500 А, 1000 А 20 A to 1000 А 20 A to 1000 А

Differential current threshold

50%, 100%, 200% 25 A, 100 A, 200

A, 500 A

20 А to 500 A 50% to 500%

20 А to 500 A 50% to 500%

Response time / Inrush resistance 20 ms / 100 ms 20 ms to 200 ms 20 ms to 200 ms

Fault detected P-PP-G

Fault phase indication

Direction fault indication no no

Current withstand 25 kA / 500 ms 25 kA / 500 ms 25 kA / 500 ms

Communication no Combox Combox

Adjustable reset time 6, 12, 24, 48 hours 1h to 7d 1h to 7d

Reset Time, Magnet Reenergized line

Remote, Time, COM

Reenergized line

Remote, Time, COM

Reenergized line

Test Magnet Remote, Magnet Remote, Magnet

Battery life, years 10 7 7

Total indicating time >1000 hrs > 1000 hrs > 1000 hrs

Temperature, C -40° to +85° -40° to +85° -40° to +85°

07Technical characteristics

08 Solutions for RemoteMonitoring

Communication unit Lightbox

We have developed several ways to gain control over the grid outages by a more effective and targeted co ordination of the maintenance team. The ability to obtain as fast and precise information as possible about the current state of the grid is a basic prerequisite to improving this co ordination in case of a fault.

The communication units are a robust pole mountable solution that works together with the Lodestar. Together they provide detailed information about fault events and actual state of distribution and sub-transmission overhead lines.

Lightbox benefits:• Small weight and size

• Easy mounting — simply placed and connected

• Battery supply — no need for external power sources

• Extra fault indication

• Extended information about Lodestar workflow

• Full integration with KOMORSAN

Smartbox benefits:• Powered by an AUX transformer

• Universal: direct integration with any SCADA system that supports IEC60870-5-104

Communication unit Smartbox

09

Remote controlThe Remote Control allows a user to access data, test and reset fault indicators, modify settings or even update software of fault indicators. Devices are accessible remotely within 50m, open air.

Remote Control benefits:• Instant line currents can be viewed on

each line phase

• View Lodestar events log - each fault stored in Lodestar memory can be read with Remote

• Fault indicator settings can be modified with Remote Сontrol: update current thresholds, reset conditions, reset timeout

• Control indication — an indication test and a rest can be performed

• Support for GRE, Ipsec, OpenVPN and other network protocols

• Possibility of equipping the Smartbox with the discrete inputs and outputs

• External GSM antenna with high sensitivity

• Ability to connect via Ethernet

10Cable fault locator IKZ-K4

Benefits:• Сombined Short Circuit and Earth

Faults, identifies type of fault happened.

• High sensitivity: Due to the measuring principle the earth fault indication is suitable for networks with low-impedance or solidly earthed neutral, detects Earth fault with I=0,5 A

• Remote grid monitoring with KOMORSAN monitorig system or another SCADA system

• Easy to mount and operate – can retrofit solution for the old devices without replacing existing current transformers

• Indicator can work with our own designed sensors or with standard current transformers and voltage transformers

• Fiber optic cables safety technology: transmit the signals from the current transformer to the evaluation unit in the housing

• Records recent accidents data in the internal memory

IKZ-K4 intended to use in a cell of switchgear on overhead and cable power lines with 6-35 kV voltage. It helps to detect direction of fault place and identifies type of a fault. All device parameters such as trip current values, response delay, thresholds, reset timeout, relay configuration and other can be configured with RS-485

interface. IKZ-K4 registers fault data and transmit it to SCADA system. IKZ-K4 has several modifications. Product line contains devices that uses standard current and voltage transformer and devices with own sensors, connected via fiberoptic cables. Both device types manufactured in panel and wall moutned enclosures.

11Cable fault locator A-Signal

A-Signal benefits :• Directional short circuit and ground

fault locating

• Locates Phase to Ground faults in net-works with isolated neutral and reso-nant earthed neutral

• Events journal and waveform memory

• Uses standard CT/CV

• High accuracy measurements

• GPS time sync

• Phasor measurement

• Embedded backup battery

• Compact size

Compact and feature-rich A-Signal is an excellent building block for a reliable and effective smart gird. The housing size of the device is 96x48mm, but A-Signal has all functions of first in class directional short circuit and earth fault indicator, distributed digital fault recorder and powerful synchronous measurement device. High accuracy and unique algorithms enhance the ability to locate earth faults in various types of underground, overhead and mixed networks. There is no need in specifying a type of a network grounding or selecting residual current thresholds.

12 KOMORSANmonitoring softwareKOMORSAN benefits:• High usability, works with most

operation systems

• Sends fault information directly to maintenance crews via SMS and e-mail (optional)

• Can be integrated with third-party SCADA system

KOMORSAN provides a platform for distribution network monitoring. KOMORSAN data acquisition and processing system is based on an increasing number of small, low cost communicating Lodestar FCIs installed in every section of the network. KOMORSAN allows the utility to control the status of installed Lodestar FCIs on the map or mimics diagram. At the same time KOMORSAN provides the possibility of transferring data to SCADA via IEC104 protocol.

OLTC Position Monitors UP

UP benefits:• Wide Range of Products family—

one can choose a device that exactly fit to your system or use the same universal modes for different situations.

• Wide range of input types — Synchro transmitter, Current loop output, Resistive sensor, BCD encoder, RS-485

• Wide range of data outputs — RS-232, RS-485, Analog current loop, Relay outputs, Block output signal

• Highly configurable

13

UP OLTC Monitors Indicators are world leading devices that can work together with an extremely large range of the On-Load Tap Changers. A3 UP Monitors family contains a number of devices, form very simple models suitable for solving particular problems to complex multifunctional devices that can be employed anywhere. Using our devices one can receive position information from any type of OLTC and transmit it via digital or analog outputs.

Univarsal Monitor UP 25 has all available inputs and outputs integrated in one device. Such “single-device approach” ensures both indication of transformer step data on the control switchboard and transfer of such data to Process Control Systems (PCS) and other automated systems. The device can be easily set up for different sensor type; even if you change your drive unit it is not necessary to change the indicator. Versatility and availability of different kinds of outputs allow integrating the device with any PCS.

14 OLTC ControllersUP 100 and UP 200UP 100/ UP 200 benefits:• Combination of controller and indicator

functions results into:

multiple enhancement of reliability of OLTC electrical drive of an operation control;

additional adjustment settings emergency diagnosis settings;

space saving on the control switchboard.

• OLTC Position Regulators may be connected directly to synchro transmitter, resistive sensors, BCD-sensor, Gray-code sensors, current loop sensors with 4..20 mA (0-5 mA, 0-20 mA) output or digital Modbus output

• The OLTC current tapping step value is displayed on bright LED indicator, this allows Operators to easily read the data on their workstation in any light conditions

Position Controller UP 100 and UP 200 are designed to control OLTC electrical drives under an automatic regulation of power transformers transformation ratio. The device can be used at the 35 – 750 kV substations with a gradually or abruptly varying load.

Special functionalities of UP 200:parallel operation mode to two transformers; on-load tap changer monitoring; parallel transformer bank operation of single-phase transformers; cross-monitoring.

15

Transformer tap sensors DP

Tap sensor DP-3

Transformer tap sensors DP can be installed in the transformer changer drive. These sensors are available in two types of enclosures: • with the dimensions similar to those of synchro transmitter BD404/ BD1404;• 45x88x62 mm - which is the optimum

Drive position sensor DP-3 is designed to determine actual transformer tap on load. This sensor can be used with PDP-1, PDP-4, MA-1, RNT -13 drives, as well as the other drives that can be completed with synchro transmitters (BD404 or BD1404) or other sensors with the dimensions of BD404/ BD1404 type sensors.

Drive position sensor DP-3 is a metal cylinder with chamfers for installation needs. Overall dimensions and mounting points of DP-3 type sensor are the same as those of BD404 or BD1404 synchro transmitters. Sensor DP-3 is a drive turn angle encoder with signal conversion circuit, it can be installed instead of synchro transmitter. Sensor DP-3 has different interfaces in order to transmit the drive turn angle. These are: interface RS-485 for the transformer tap data transfer to PCS or to UP 25 OLTC Position Monitors in digital form via MODBUS protocol. Current analog interface "current loop" 4-20A, 0-5mA or 0-20mA is designed for the transformer tap data transfering to UP 25 OLTC Position Monitors or PCS by additional transmitters. Analog interface 0-5V or 0-24V for the transformer tap data transfer to UP 25 or to PCS via additional transmitters. While using this interface sensor DP-3 can function as a resistive sensor of MZ-2, MZ-4, EM1, MR, ED-S drives. In this case the sensor can be used for connecting the Siemens and ABB transformer protection and control automatics together with drives PDP-1, PDP-4, MA-1, RNT-13 and other types.

solution for replacement of resistive sensors based on circular selectors (for example, MZ-2, MZ-2);

The sensors represent both purely resistive sensors and multifunctional sensors with analog (0-5 mA, 0-20 mA, 4-20 mA, 0-5 V, 0-24 V) and digital outputs (RS-232,RS-485).

16 Tap sensor DP-4

Tap Sensor DP-5

Drive position sensor DP-4 is designed to determine actual transformer tap on load. This sensor may be connected to the MZ-2, MZ-3, MZ-4 type drives. Sensor DP-4 is an electronic sensor of drive turn angle with the signal conversion circuit; it can be used instead of resistive sensor.

Sensor DP-4 has different interfaces in order to transmit the drive turn angle. These are: interface RS-485 for the transformer tap data transfer to PCS or UP 25 OLTC Position Monitors in digital form via MODBUS protocol. "Current loop" analog current interface 4-20 A, 0-5 mA or 0-20 mA is designed for the transformer tap data transfer to UP 25 OLTC Position Monitors or PCS by additional transmitters. Analog interface 0-5 V or 0-24 V is used for the transformer tap data transfer to UP 25 or PCS by additional transmitters. When using this interface sensor DP-4 can function as a resistive sensor of MZ-2, MZ-4, EM1, MR, ED-S drives, the sensor can be used for connecting Siemens and ABB transformer protection and control automatics to drives.

Drive position sensor DP-5 is designed to determine actual transformer tap on load. This sensor can be connected to SMA-7, SMA-9, SHM, EM-1, MR, ED drives with the number of contacts corresponding to the number of drive positions. The sensor converts OLTC step number into BCD-code. Sensor DP-5 has a BCD-output to deliver transformer tap data to UP 25 OLTC Position Monitors (to display the OLTC step number on the control switchboard) or to TM and PCS.