Cable Volt Drop Problems?
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Installations with long cable runs have an inherent
problem of developing high voltage drops across their
cables. To overcome this it is necessary to select and
use larger sized electrical cables in order to reduce
such voltage drops to an acceptable level. |
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IEE
Regulations stipulate that a volt drop should be no more
than 4% which means that for a 400V system the drop
across any length of its cable should not exceed 16
volts. So as an |
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example, if
a supply voltage is 400V on the transmission end then
the voltage at the other end of the cable should not be
less than 384V. |
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In addition
to a cable voltage drop, main supply voltages have a
permissible fluctuation range of +/- 6%, providing the
mains supply is connected directly to the supply
authority. If this is not case then fluctuating mains
voltages may be even higher due to the various loads
which may be connected (plus load changing conditions)
in between. |
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Taking into
consideration these various factors it is apparent that
the overall voltage drop at the end point of a cable can
be quite substantial. To meet IEE requirements, it is
essential to select a correctly sized and rated cable to
keep within the permissible volt drop levels for each
installation. |
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In recent
years copper prices have risen significantly and under
IEE compliant situations the choice of power cable size
can now have a really significant impact on project
installation costs. |
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CVC
Slashes Electrical Cable Sizing & Costs
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Our
NEW range of outdoor cost efficient Voltage
Compensators enable you to “compensate” for these
expensive voltage drops, by boosting up voltage and
keeping it constant - ensuring you are able to make
SUBSTANTIAL savings on your electrical power
cable costs. |
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Key Features |
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Large Range
- up to 1000 kVA |
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Single or
Three Phase Models |
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400V (H)
& 208V (L) Output 3 Phase Voltage Models Available
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4 Choices of
Input Voltage Range per Model |
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High
Efficiency |
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Independent
Phase Control Sensing |
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Inbuilt
Standard Protection Features |
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Over / Under Voltage Alarms |
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Phase Failure Alarms |
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Voltmeter Selector |
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IP20
Enclosure Protection |
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Compliance
with International Standards |
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For further details or to discuss
your individual requirements, please
contact us. |
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NEWS UPDATE - CVC-TM
Range |
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Ideal for
critical load applications! |
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Now also
available with the new Parallel Redundant Voltage
Regulation Control Module (VRCM) fitted on each of the
phases. Should one module on a phase fail or
malfunction the other one will step in automatically
ensuring no interruption to the load or loss of
capacity. |
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CVC Three Phase General Technical
Specification |
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Model |
H Model |
L
Model |
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Input
Voltage Range: |
S1
- 373V to 430V |
S1
- 187V to 230V |
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S2 - 352V to 430V |
S2 - 176V to 230V |
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S3 - 332V to 430V |
S3 - 166V to 230V |
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S4 - 311V to 430V |
S4 - 156V to 230V |
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S5 - 290V to 430V |
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Output Voltage: |
346V to
440V (Presettable) |
208V to
220V (Presettable) |
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Output Voltage Accuracy: |
±1.5% |
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Frequency: |
47 - 65Hz |
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Efficiency: |
98% |
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Surge Ratings: |
5 x max. current rating for 1 second |
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2 x max. current rating for 20 seconds |
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1.5 x max. current rating for 2 minutes |
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Surge Suppression: |
Protects loads against high energy (Spike)
and transient voltage |
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Surge Arrester: |
40KA at 415V AC Class III |
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(IEC 61643-1:1998-02, EN
61643-11:2001) |
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Total Harmonic Distortion: |
Less than 1% |
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Independent
Phase Control: |
Maintains each phase voltage stable
irrespective of load balance |
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Environment: |
Temperature Range -15% to 50°C. |
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Derate by 2% for each additional
°C up to max. 60°C |
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Suitable for indoor tropical use 95% RH
(non-condensing) |
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Max. altitude 1000m - Derate by 2.5% for
each additional 500m |
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Construction: |
Enclosures to EN 60529, IP20 |
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Conformance: |
BS 6527,
BS6667, IEEEE587 |
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CE
Conformity: |
EN55011, EN61000-6-1 |
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Warranty: |
2 Years |
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Standard
Features: |
By-pass control switch |
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Over / Under Voltage Alarm |
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Phase Failure Alarms |
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Voltmeter / Selector Switch (Internal) |
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Optional Features: |
Input / Output Breaker |
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Over / Under Voltage Trip Protection |
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Manual On / Off Mechanical Switch |
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Manual Mechanical Bypass Switch |
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Ammeter Selector Switch |
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Notes: |
Weights and Dimensions on request. |
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Special voltage configurations available to
order |
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Higher
kVA rating models available to order |
