Fuses And Circuit Breakers; Types Of Fuses; Panel Fuses - Danfoss VLT HVAC Drive FC 102 Operating Manual

Operating Guide | VLT® HVAC Drive FC 102 Specifications
Transport temperature [°C (°F)] -40 (-40) to +70 (158)
Altitude during operation
100% current (no derating) up to 1000 m (3280 ft)
1% current derating for each 100 m (328 ft) above 1000 m (3280 ft)
Maximum 4000 m (13123 ft) with 500 V AC
Maximum 2000 m (6561 ft) with 690 V AC
Noise level < 80 dB(A)
1
The current ratings for the E5h and E6h enclosures are achieved by filter paralleling.

10.8 Fuses and Circuit Breakers

10.8.1 Types of Fuses

Panel fuses

Panel fuses are an option for upstream protection, and can be ordered as either a UL class fuse for UL variant or a gG fuse for IEC
variant.
Fusible disconnector switch
The fusible disconnector switch is an option that safely isolates the drive from the mains with a fuse switch mounted below the drive
module.
Non-fusible disconnector switch
The non-fusible disconnector switch is an option. All units ordered and supplied with a factory-installed, non-fusible disconnect switch
require a UL Class fuse to meet 65kA SCCR for the drive system.
Mains contactor
The mains contactor is an option. All units ordered and supplied with a factory-installed contactor require a Class L/J branch circuit
fusing to meet the 65kA SCCR for the drive system.
This option makes it possible to connect or disconnect the drive from the mains by using a control switch on the control compartment
door or an external switch. The external switch must be wired to terminals XD0. See 5.3 Wiring Schematic for D9h and D10h Enclosed
Drives and 5.4 Wiring Schematic for E5h and E6h Enclosed Drives. The mains contactor is supplied with 2 sets of auxiliary contacts (1
normally open and 1 normally closed). They are located on the sides of the contactor. By default, the NO auxiliary contact is wired at
the factory and used by the system.
MCCB
With the recommended MCCBs, the SCCR for the drive system can be declared as shown below.
10.8.2 Panel Fuses
Panel fuses are an option for upstream protection, and can be ordered as either a UL class fuse for UL variant or a gG fuse for IEC
variant.
172 | Danfoss A/S © 2018.10
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