• Ergonomically designed portable handheld device with splash-proof enclosure.
• Data is entered via a membrane keypad.
• Clear LCD display.
• Internal rechargeable batteries with an operational time of up to 4 hours.
• The unit may be charged via a mains AC adaptor (supplied).
• Automatically detects whether a temperature or pressure RDT is being addressed.
• Up to 99 individual RDTs may be addressed sequentially.
• Auto time off feature set to turn the monitor off after 2 minutes of device inactivity.
• Ability to auto-detect the address of any RDTs connected to the line.
• Integral certified RDT, which can be used for comparative testing and analysis.
• Gauge readings may be displayed by referencing the in-built RDT to any address on the line.
• A comparison of the readings of any two RDT addresses may be made. The returned data for these is shown on the LCD simultaneously.
• The unit is supplied with a carrying case and test leads.

Drallim’s ‘Re-addressable’ Digital Transducer forms part of a proven product range of monitoring equipment, combining microprocessor techniques with Drallim’s long distance two-wire digital multi-drop protocol. This has been established and proven for many years in the international Power Transmission Industry.

RDT Features:

• Genuine two-wire digital multi-drop signalling, allowing signal and power to be superimposed on the same twisted pilot pair.
• Up to 99 individual mixed type RDTs can be addressed sequentially on each pilot pair.
• Device is easily re-addressable, (via separate portable handheld Address Pod)
• Remote operation offering up to 15 kilometres.
• Longer distances achieved when used in conjunction with Signal Repeater Unit.
• Superior pressure measurement accuracy with on-board temperature compensation.
• Environmental Protection: IP68 Rating with integral water barrier, (2 metres submersion).
• Integral 15kV induced protection for installation on auxiliary pilot cables.
• Ergonomically designed PVDF enclosure.
• Resistant to corrosive effects of dielectric fluids.
• 40 Years processor memory charge storage EEPROM, recalibration schedules available.
• Universal termination components offering standard BSP hydraulic connections.
• Optional ‘Quick-fit’ hydraulic coupling and electrical ‘plug and socket’ pairing.
• Approved by National Grid (UK) for installation on circuits up to and including 400kV.

For the accurate and reliable long-term measurement of dielectric fluid pressures in transmission and distribution self-contained oil-filled cables up to and including 400kV.

Drallim’s Remote Digital Transducer forms part of a new product range combining microprocessor techniques with Drallim’s long distance two-wire digital multi-drop protocol. This has been established and proven for many years in the international telecommunications sector.

RDT Features:
• Genuine two-wire digital multi-drop signalling, allowing signal and power to be superimposed on the same twisted pilot pair.
• Up to 99 individual mixed type RDTs can be addressed sequentially on each pilot pair.
• Remote operation offering up to15 kilometres.
• Longer distances achieved when used in conjunction with Signal Repeater Unit.
• Superior pressure measurement accuracy with on-board temperature compensation.
• Environmental Protection: IP68 Rating, (2 metres submersion).
• Integral 15kV induced protection for installation on auxiliary pilot cables.
• Ergonomically designed PVDF enclosure.
• Resistant to corrosive effects of dielectric fluids.
• 40 Years processor memory charge storage EEPROM, recalibration schedules available.
• Universal termination components offering standard BSP hydraulic connections.
• Optional ‘Quick-fit’ hydraulic coupling and electrical ‘plug and socket’ devices available.
• NGC Type-Test approval for installation on circuits up to and including 400kV.

For the accurate and reliable long-term measurement of dielectric fluid pressures in transmission and distribution self-contained oil-filled cables up to and including 400kV.

The Multi-voltage Power Supply unit provides a reliable 48V DC power output from three alternative input power sources. The unit forms part of a new product range combining microprocessor techniques with Drallim’s long distance two-wire digital multi-drop protocol.

MPSU Features:
• Ergonomically designed enclosure for wall mounting.
• EMC Approved.
• Optional 48v DC, 110v DC or 90 – 264 AC Inputs.
• Regulated 48V DC Output.
• Local LED Indication.
• Capacity to power up to 2 Remote Monitoring Units and 15 Isolation Units simultaneously.
• Voltage–free Alarm Contacts for remote condition monitoring.
• Automatic voltage source detect and changeover capability

This product is a custom designed Multi-voltage Power Supply Unit. It is designed to provide a stabilised DC voltage to the cable monitoring control equipment and is capable of supplying a DC output of between 36V – 72V from either a 48V DC battery input, 110V DC or a 90-264V AC input.

The Isolation Unit is designed for use on auxiliary pilot cable networks associated with EHV power cables. The product forms part of a new product range combining microprocessor techniques with Drallim’s long distance two-wire digital multi-drop protocol, which has been established and proven for many years in the international telecommunications sector.

Features

• Self-contained wall-mounted IP66 enclosure.
• Single Pilot Pair configuration.
• Internal 48V/48V DC/DC converter (15KV Isolation).
• High Voltage transformer Isolation withstand:
• 14kV Continuous.
• 15kV One minute.
• 20kV 1.2/50
s.
• Medium Voltage transformer isolation – 5kV continuous.
• Separate ‘hot side’ and ‘cold side’ compartments.
• Integral ‘Hot side’ Perspex screening with suitable labelling to conform to HSE Regulations.
• Pilot DIN rail disconnection to 15kV (‘Hot side’), with grounding leads and isolation plugs.
• Meets EMC and Type-Test approval for installation in National Grid Company substations.

The Isolation Unit is specifically designed to protect against damaging induced voltages on auxiliary pilot cables associated with EHV power cables. The purpose of the device is to provide a suitable barrier to these potentially harmful voltage spikes. The isolation unit is designed to withstand induced voltage transients up to 15kV RMS and provides protection for associated monitoring equipment connected to individual pilot pairs (between pilot connection in common mode to earth).

The Remote Monitoring Control Unit is at the heart of the Drallim Remote Cable Monitoring System. It forms part of a new product range combining microprocessor techniques with Drallim’s long distance two-wire digital multi-drop protocol.

RMU Features

• Ergonomically designed 19in rack-style enclosure for wall mounting, incorporating the Master Control Unit
• (MCU) and Auxiliary Control Units (ACU).
• Genuine two-wire digital multi-drop signalling, allowing signal and power to be superimposed on the same twisted pilot pair.
• Concurrent multiprocessor architecture, interrogating up to four transducers simultaneously (Optional).
• Up to 99 individual mixed type RDT’s can be addressed sequentially on each pilot pair.
• Accommodates 16 – 64 isolated pilot pairs.
• Over 1000 RDTs per RMU (mixed devices).
• Communicates to all of Drallim’s range of RDT series transducers.
• Full redundancy capability (Optional).
• Remote or local control unit for unmanned locations.
• Remote administration incorporating:
• Remote in-situ programming (i.e. downloading software updates by telephone link).
• Transportation of diagnostic messages through system as they occur.
• Remote diagnostic test tool: DCUT.
• Robust exception handling (i.e. auto-reboot and report process).
• Remote configuration and set up.
• Auto synchronisation of time with server (offering reliable date stamp for RDT readings).
• Local power status (including ‘watchdog’ alarm), and activity indication.
• Up to 160 voltage-free contact alarm status for interconnection with bespoke SCADA system.
• Type-Test approval for installation in National Grid Company substations.

The OILMON system Master Control Unit is an intelligent controller with efficiently integrated transducer communications, interface line, multiplexer and control port interface.
Compatible with the full range of Drallim CABLE MONITORING equipment, the AM100c is a remote data acquisition device which can be easily deployed to economically monitor cable pressure performance. Control is achieved through a serial interface that can be configured for local or remote access. An integral PSTN modem is included. Adaptors are also available for Local Area Network connectivity and control. The modular design of AM100c is available in either 8 or 16 port versions. Each port can control up to 100 pressure, temperature, flow or contact state monitor transducers. These ports are presented on either Krone™ terminal blocks or a D-type connector. 16 local voltage free contact monitors have been integrated into the unit to allow local SCADA compatible reporting of alarm contact states. This unit is fully compatible with all type of Drallim measurement sensors. The AM100c can be shelf or rack mounted, using the appropriate installation kit. Industrial grade design, for long life and high reliability. The unit is powered from a nominal 48VDC positive earth supply, max current 200mA.

Key Features

• Fully integrated modular design.
• Local or remote communication options, including PSTN modem.
• 8 or 16 line pair capacity, expandable using AM100a, Auxiliary Control Unit.
• Up to 100 transducers cab be deployed per line, typically over a 10km range.
• 16 port Contact monitor included.
• Shelf or 19” rack mount installation kits.
• Compatible with 20 years of Drallim pressurisation equipment and transducer development.
• Accepts RDT series of transducers.

RETRACE aids the enhancement of the accuracy of a utility’s Low Voltage System records. The RETRACE works by superimposing a low power signal on the feeders from an LV substation. Further downstream of the single phase supply the correct LV Feeder & Phase can be detected. This can all occur with no need to disconnect the supply.

Background

The RETRACE has been developed to meet a very basic need of the electricity distribution industry – the need to know exactly how customers are connected to the supply system. The increasing regulatory pressures within the market place mean that this need has become more acute in recent times. With growing residential and commercial development electricity distribution records can easily become out of date and inaccurate. Even the simple task of recording the actual connection details during construction or restoration is not always achieved. Many organisations have not effectively closed the loop between what is planned and what is constructed. In some cases, during periods of rapid expansion, records may not even exist. The supply of efficient and dependable electricity can only be assured if the supply chain is clearly defined and understood. The RETRACE allows the management of basic supply point data to be carried out in a cost effective manner.

DELTA V locates permanent and Intermittent faults, automatic operation detects fault activity 24 hours/day and capable of finding intermittent faults before another outage. DELTA V uses the voltage gradient technique to locate faults on underground low voltage cables. It is especially effective when used with the REZAP Fault Master Low Voltage autorecloser on both intermittent and permanent faults. DELTA V consists of several intelligent Remote Monitoring Nodes and a portable Handset. The Nodes are miniature transient recorders installed along the faulted feeder to record voltage drops during faults. The Handset collects the information and collates the results to give a fault location.

Installation Procedure

The topography of the cable is entered into the Handset using a simple graphic interface. It is not necessary for the exact cable configuration to be described, but it is important that major junctions in the backbone are identified. The Handset will then suggest the best locations for the Nodes.

The REZAP Fault Master is the leading low voltage cable fault auto-recloser in the UK. The REZAP Fault Master is the latest and most advanced version of the REZAP unit, building upon established features while adding powerful new communications and reporting tools. The REZAP has been designed as a scalable platform on which new fault management and fault location technologies can be built.

Benefits

Reduce response times
- real-time information sent to engineers
- restoring power fast via remote operation
- REZAP lockouts avoided by ‘Auto Reset’
- removing dependence on customer

Reduce engineer workload
- reducing the number of site visits

Identify overload conditions
- continuously logs load current
- distinguish between faults and overloads

Aiding fault location
- mobile phone controller
- fault-thumping mode
- data logger
- ability to prevent phase-phase re-close
- single ended fault location capability

Find lost REZAP FM units
- GSM based location service

Managing the LV network
- region and substation based data

management
- easily see active REZAP FM units
- view fault history

IIP reporting
- reports outages and customer minutes lost by region or substation

Investing in the future
- the REZAP Fault Master architecture is designed for scalability