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HVMS
HV engineers - medium voltage - high voltage services -
jointing
All high voltage systems must be tested during their operational
life, during installation, final commissioning, routinely as part of a
scheduled maintenance programme or after prolonged periods of disuse.
These tests will ensure not only that the installation operates as
designed, but that all modes of standby equipment and protection systems
work when required.
HVMS offer clients a fully tested, fully certified system. Most
importantly, all supporting calculations and supplementary data
schedules are issued, which in the event of catastrophic equipment
failure and or damage to property, forms essential documentation that
can be submitted to insurance companies on demand.
Equipment Erection & Installation -
Pre & Final Commissioning
- Technical Studies & Reports ; Relay Protection, Earthing, Power
Quality, Partial Discharge, Design
- Maintenance of Entire HV & LV Systems Networks – Capital
Equipment. (All makes and models - Non Destructive, Non Intrusive
Predictive & Conventional Time based)
- Equipment Life Extension - Retro-fit Equipment & Accessories
including Vacuum Breakers
- Local Operational Site Control - SAP’s based on clients sites
(SAP-Switching / Safe Systems / Safety Rules)
- Training for Competency & Authorisation of persons
- Power Systems Engineering & Integration (Protection, Control &
Automation)
- Supply of Transformers, Erection & Commissioning -(Cast Resin,
Liquid & Oil Transformers 3.3kV - 132kV up to 500MVA)
- Crisis Response & Disaster Recovery - 24 Hour Call-Out Retainer
Contracts and Emergency/Supply Failure Tel: 0845 644 4867
Partial Discharge - Monitoring & Testing
Studies show that a large proportion of electrical failures are
random as high as 92 percent. In effect, this means that most failures
have not been predicted in advance using traditional maintenance
practices. Many of these failures are attributed to insulation defects
with underlying causes like water, dirt, grime, stress, surges, heat and
lightning strikes. The random nature of failures is compounded by the
aging of electrical infrastructure, increased pressure to reduce
operating costs and shrinking manpower and preventive maintenance
budgets.
The recognition that detecting and monitoring the strength and pulse
rate of partial discharges (PD) as a means to determine remaining
insulation integrity is widely accepted in the industry. More recently,
on-line, continuous monitoring is accepted as the most desirable form
off PD testing because the detection of developing problems is not left
to chance. Continuous testing can help reduce the randomness (i.e.,
forced outages) of failures and is the most economic form of insulation
testing / monitoring in terms of labour dollars and productivity.
The InsulGard is a continuous, on-line predictive relay for medium
voltage equipment like switchgear, generators, motors, transformers and
cable. It is designed to detect, monitor and report on partial
discharges the precursor to significant insulation degradation. The
InsulGard System consists of application specific sensors, a stand-alone
monitoring unit and diagnostic software.
The InsulGard provides an economical and continuous method of testing
insulation integrity as a means of avoiding forced outages. Forced
outages are far more expensive than planned outages. Other means of
insulation testing are often not as accurate, may require outages (which
affects productivity), are periodic and are labour intensive. Given most
electrical failures are random, the continuous aspect of the InsulGard
is an ideal solution.
'Consultants' should specify' Final Commissioning of Entire HV & LV
Systems Network
HVMS Commissioning shall consist of showing that the completely
integrated system will function in all respects with the total intent of
the design parameters.
1) Comply with appropriate standards including international, national,
company and site specific.
2) Review and collate - the systems individual plant pre-commissioning
and site test data.
3) Ensure protection devices have correct settings. System is set up
correctly in as far as contract requires.
4) Prepare specific method statements and risk assessment for system
energisation.
5) Adopt system - permit system and safe system of work. As per Eaton
Safety rules for example.
6) Test equipment co-ordination/interface between individual equipment
and devices as a complete network.
7) Prepare switching schedule for systems infrastructure and load/s.
8) Submit switching schedule to control for “check safe” sanction.
9) Carry out procedure.
 Request
information:
HVMS HV cabling maintenance fault
location testing partial discharge rail services utility trackside
systems
Technical information associated with:
HVMS
engineering solutions commissioning contestable connections senior
authorised persons
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Email this company
HVMS Limited
Unit 3
The Interchange
Wested Lane
Swanley
Kent
BR8 8TE
Tel : +44 (0) 845 644 4867
Fax : +44 (0) 1322 294 413
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