Selection parameters according to IEC /DIN EN 61439-1 Annex C

Establishing of the Selection parameter according to IEC /DIN EN 61439-1 Annex C

The following table shows the standard values of the mobile distribution units manufactured by INDU-ELECTRIC. According to the standard listed above, appropriate agreements must be made between the user and the manufacturer during the quotation process if the customer requires deviations from the stated INDU-ELECTRIC standard values.

In accordance with DIN 61439-1, the user must define the following functions and characteristics.

Property Standard Specification INDU-ELECTRIC Standard
System according to type of grounding TN TN
Rated voltage up to max 1000V 400V AC
Transient overvoltages Overvoltage category I-IV II
Temporary overvoltage See Table 8,9,10 2000V AC
Rated frequency DC/50/60HZ 50HZ
Short-circuit resistance   up to 125A =10KA, 400A = 20KA
SCPD (Short-circuit protection device) in the supply   mobile distributors are usually supplied via plug devices
Coordination between SCPD inside/outside the socket distributor available/ install/ integrate customer-dependent
Type of protection against electric shock (protection against electric shock due to contact inside the distributor during intended operation) observe local requirements basic protection
Type of protection against electric shock - fault protection (protection against faults in an INDU-ELECTRIC distro) automatic disconnection/ protective insulation article-dependent: automatic disconnection or protective insulation
Installation location indoor/outdoor article-dependent
Protection class IP xx IP 44
Protection against mechanical impact specify IK code IK 10
Resistance to UV radiation required for outdoor installation high resistance
Ambient temperature limits Outdoor 25°C, Indoor 50% at 40°C from -25°C to 45°C
Pollution degree 1,2,3,4 3 (industrial environment)
Altitude   2000 meters
EMC environment A/B B
Special operating conditions such as EX zone, vibrations   not defined
Requirements for storage and transport (type of transport, different environmental conditions, max. dimensions, packaging requirements) none see manual
Requirements for accessibility for operation, inspection, maintenance or expansion none inspection/maintenance only by qualified personnel
Separation of outgoing circuits   via plug devices or connectors
Rated current of the switchgear assembly   article-dependent
Rated diversity factor (RDF) RDF for circuits / RDF for entire power distributor RDF see INDU-ELECTRIC manual
Cross-section ratio between phase conductor and neutral for currents in N up to 50% of phase conductors, otherwise special agreement required phase conductor cross-section = neutral conductor cross-section
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