Protection - Flexiheat ME Series Technical Manual

4.5)Protection

Calibre and size of fuses :
Fuses F1 to F4: industrial cylindrical cartridges size 8 x 32
F1 and F2: 1 A type aM
F3: 1 A type gG F4: 0.5 A type gG
Fuses F5 to F10: industrial blade cartridges size 1: 160 A type gGsize 2 industrial
blade cartridges: 250, 315 and 400 A gG type
Calibers:
Power
boiler
665kW
700kW
735kW
770kW
805kW
840kW
875kW
910kW
945kW
980kW
Fuses F5 to F10 can be replaced by circuit breakers of the same rating.
Electrical connection- The ME boiler must be supplied with 400 V three-phase without neutral, 50 Hz
The cross-section of the supply cables and the upstream protection must be calculated and selected by
a qualified electrician, in accordance with standard NF C 15100 (take into account the installation
method, the length of the cable and the short-circuit current)
It is necessary to provide a protection device with automatic cut-off in the event of an insulation fault,
differential circuit breaker or other depending on the neutral system.
Class 1 equipment protection index IP21 / IK08
Powering up out of the water leads to the irremediable destruction of the immersion heaters (no
guarantee).
EARTH CONNECTION IS MANDATORY
F5 F6
160A
250A
250A
315A
315A
F7 F8
160A
160A
250A
250A
315A
315A
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F9 F10
160A
160A
250A
250A