Operation Manual

2.1.3 Distribution network

All regular electrical devices without special circuits generate harmonic currents into

distribution network. High rates of harmonic current may cause losses and disturbance to

some equipment.

KempArc 500

This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc

is greater than or equal to 4.6 MVA at the interface point between the user’s supply and

the public supply network. It is the responsibility of the installer or user of the equipment

to ensure, by consultation with the distribution network operator if necessary, that the

equipment is connected only to a supply with a short-circuit power Ssc greater than or equal

to 4.6 MVA.

KempArc 400

This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc

is greater than or equal to 4.7 MVA at the interface point between the user’s supply and

the public supply network. It is the responsibility of the installer or user of the equipment

to ensure, by consultation with the distribution network operator if necessary, that the

equipment is connected only to a supply with a short-circuit power Ssc greater than or equal

to 4.7 MVA.

KempArc 300:

WARNING: This equipment does not comply with IEC 61000-3-12. If it is connected to a public

low voltage system, it is the responsibility of the installer or user of the equipment to ensure,

by consultation with the distribution network operator if necessary, that the equipment may

be connected.

2.1.4 Connecting the power source to the electric network

The KempArc SYN power source is connected to a 400-V three-phase network. The machine

is equipped with a ve-metre mains cable that does not have a plug. Before use, check the

mains cable and install a mains plug. If the cable does not comply with the local electrical

regulations, replace it with a compliant cable.

NOTE! The mains cable or plug may be installed or replaced by only an electrical contractor or

installer authorised to perform such operations.

Replacement of the mains cable

1. Unscrew the mounting screws on the top and sides of the machine, and remove the case

by lifting it.

2. Disconnect the phase leads from connectors L1, L2, and L3, and disconnect the

protective earth lead.

3. Pass the cable to the machine through the inlet ring at the rear of the machine, and

secure the cable with a cable clamp.

4. Connect the cable’s phase leads to connectors L1, L2, and L3.

5. Connect the yellow-green protective earth lead to its connector .

NOTE! Do not connect the zero lead if you are using a ve-lead cable.

The table below lists the fuse sizes for 100% load in a 400-V three-phase network with

4 x 6-mm² cable for dierent power source models.

Model Fuse

SYN 300 20 A delayed

SYN 400 25 A delayed

SYN 500 35 A delayed