Select language

Design Verification

Temperature-rise limits

KEMA, ASTA and SABS have carried out tests on complete switchboards up to
6300 Amp incl. incoming circuit breaker.
As switchgear and controlgear assemblies are manufactured or assembled on a
one-off basis, CUBIC has carried out a large number of temperature-rise tests.
Furthermore, the CUBIC modular system including busbars has been temperature-
rise tested at an ambient temperature of 50˚C.

Type test verified by:

KEMA, ASTA and SABS to IEC 60439-1, EN 60439-1.
Det Norske Veritas to own requirements,
Germanischer Lloyd to own requirements and
Russian Maritime Register of Shipping. 

 
Dielectric properties
The CUBIC modular system has been power-frequency withstand voltage tested to 3.5 kV
without puncture or flashover. The withstand voltage is tested with up to 18.5 kV without
any unintentional disruptive discharges. The insulation resistance, measured after a 48
hour humidity test, reached a higher value than the required minimum of 2 megohm.
Type test verified by:

KEMA and SABS to IEC 60439-1, EN 60439-1.
Det Norske Veritas to own requirements,
Germanischer Lloyd to own requirements and 
Russian Maritime Register of Shipping. 
 

Short-circuit withstand strength
The CUBIC busbar systems up to 7000 Amp have been tested. The following
short-circuit levels have been obtained at the laboratories of KEMA and ASTA:
Rated short-time withstand current, Icw: Up to 120 kAmp for 1 s. and 65 kA for 3 s.
Rated peak withstand current, Ipk: Up to 264 kAmp
Type test verified by:
KEMA, ASTA and SABS to IEC 60439-1, EN 60439-1.
Det Norske Veritas to own requirements, 
Germanischer Lloyd to own requirements and
Russian Maritime Register of Shipping.     
 
Effectiveness of the protective circuit
In CUBIC assemblies the effective connection between the exposed conductive
parts has been tested by a number of measurements, and is under current supervision
by KEMA.
The short-circuit withstand strength of the protective circuit has been tested to
levels corresponding to those of the busbar systems, see above.
Type test verified by:

KEMA and SABS to IEC 60439-1, EN 60439-1.
Det Norske Veritas to own requirements, 
Germanischer Lloyd to own requirements and 
Russian Maritime Register of Shipping. 

 

Clearances and creepage distances
Clearances and creepage distances have been verified for 1000 V, 50 Hz in CUBIC
assemblies.
Type test verified by:
KEMA and SABS to IEC 60439-1, EN 60439-1.
Det Norske Veritas to own requirements,
Germanischer Lloyd to own requirements and
Russian Maritime Register of Shipping.

Mechanical operation
The CUBIC modular system has been mechanically tested through a number of
manoeuvres more than 200 times. This applies for the system generally and for
the Multi Drawer system's mechanical interlocking etc. in particular.
The constructions have further been verified by KEMA.
Type test verified by:
KEMA and SABS to IEC 60439-1, EN 60439-1.
Det Norske Veritas to own requirements,
Germanischer Lloyd to own requirements and
Russian Maritime Register of Shipping.

Degree of protection
The CUBIC Modular System has in its standard version been tested up to IP54.
Type test verified by:
Elektronikcentralen and Sveriges Provnings- och Forskningsinstitut to IEC 60529, EN 60529,
Det Norske Veritas to own requirements,
Germanischer Lloyd to own requirements and
Russian Maritime Register of Shipping.
 

EMC tests
According to clause 8.2.8 of EN 60439-1 it is verified that EMC sensitive parts are
applied in accordance with manufacturer’s recommendation and the guidelines of
the IEC 61000-5-2-Technical Report Type 3.
Type test verified by:
KEMA to IEC 60439-1, EN 60439-1.

Verification of the resistance of insulating materials to abnormal heat and fire
(Glow wire).
The glow-wire test was made on all insulation materials. Insulation materials retaining
current-carrying parts in position were tested at a temperature of 960˚C.
Other insulation materials were tested at a temperature of 650˚C. The duration of
the tests was each time 30 seconds, and the tip of the glow-wire was both times
applied at a place where the section is thinnest and not less than 15 mm from the
upper edge of the specimen.
Type test verified by:
KEMA to IEC 60439-1, EN 60439-1.