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Substation pre-commissioning & maintenance
testing |
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Power
transformer site acceptance tests |
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CT & VT
current- and voltage ratio, polarity
and magnetization tests |
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Relay,
timer, transducer and meter
secondary injection calibration
tests |
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Bus bar
joint and breaker contact ductor
tests |
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HV
insulation DC tests |
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Multi
core cable point to point ringing
and functional tests |
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Current
differential protection scheme
stability tests |
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Relay
settings, meter configuration and
logic programming |
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Earth mat/grid and soil resistivity
surveying |
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Four
point sounding soil resistivity
survey tests |
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Low
frequency earth electrode true
resistance to earth measurement |
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High
frequency power transmission tower
footing resistance measurement |
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Protection-, metering-, control- & ACDC
panel
installation & upgrading |
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New
panel & multi core cable
installation and testing |
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De-commissioning of existing panels
and multi core cabling without power
interruption |
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Adding
and replacement of protection
relays, timers, meters, transducers
and auxiliary control relays and
contactors |
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ABOUT ONLAB |
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The
technical personnel at
Onlab are
highly skilled and support a safe,
healthy and environmentally friendly
work place.
The services that we provide for
gas- and air insulated HV
substations and power transmission
lines require the level of expertise
that we offer.
We are registered with TradeWorld on
the supplier database as a SME with
60% HDI status and conform to City
of Cape Town’s procurement
preferential policy of minimum 30%
black shareholding. Services are
successfully delivered on time and
all test results are documented and
as-commissioned drawings marked-up.
Company reg.: CK 99/14169/23
VAT reg.: 4770180380 |
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