FRECUENCY

They can be applied in 50 to 60 Hz systems.

OPERATIONAL TEMPERATURE

They are rated for use at a maximum application temperature of 40°C and not below -30°C.

THERE ARE NO LIMITATIONS OF USE DUE TO ENVIRONMENTAL CONDITIONS .

Dual SR type (SLOW ELEMENT - FAST) with a speed ratio of 13.1 – 21.5:

0.2, 0.3, 0.4, 0.6, 0.7, 1.0, 1.3, 1.4, 1.6, 2.1, 3.1, 3.5, 4.2, 5.2, 6.3, 7.0, 7.8, 10.4, 14.0, 21.0, 32.0, 46.0 A.

LUHFSER distribution dropout fuse cutout for expulsion fuses.

1. Nominal current

50, 100 and 200 A distribution dropout fuse cutout

2. Nominal voltage in kV.

The rated voltage of the dropout fuse cutout is defined as a function of the phase-to-neutral voltage and the phase-to-phase voltage.  

3. Interruption capability

It is the maximum fault current that the dropout fuse cutout can interrupt without damage.

LUHFSER expulsion fuses manufactured by ELECTRICOS INTERNACIONAL SAS, are installed in distribution dropout fuse cutout for overhead networks and protect distribution transformers, overhead lines, branch lines, reclosers and other devices, in circuits with voltages in the range of 6 to 38 Kv, against overload and short-current faults.  

USES Selection, application and coordination of Luhfser brand fuse wires.

• fuses to protect the transformer:

Overload protection Short circuit protection Ability to withstand input or inrush currents and surges.

• Coordination of fuses with each other
• Selection of fuses on feeder lines
• Fuse selection for recloser coordination.
• Capacitor bank protection reliability conditions for proper operation

Does not melt when it should not

Security is the aspect of reliability that expresses the degree of certainty that the fuse will not operate incorrectly under normal conditions. It is measured as the probability that the protection system will not present failure actions or that other protections will act differently than they should have.

Does not melt when it should not

Reliability is the aspect of reliability that expresses the degree of certainty that the protection system will operate correctly in the presence of an abnormal condition or fault, taking the necessary actions in this situation. It is measured as the probability that the system will act effectively in the presence of a fault.

LUHFSER expulsion fuses should be installed according to the following recommendations:

• Removal of the washer is prohibited
• Removal of the tube is prohibited
• Weakening the cable is prohibited
• Weakening the wire is prohibited
• It is prohibited to cut the cable at the lower contact of the fuse holder.

In a three-phase circuit, it is recommended that after a fault occurs and one or two LUHFSER fuses operate, they should all be replaced since the remaining fuses, even if they appear to be intact, may have suffered deterioration of the fuse wire and alter the current vs. time fusing characteristics.

For the identification of the fuse type according to the nominal current, it is recommended to fix or punch a colored Shakira on the end of the fuse wire. The material should be polymeric, resin, or fiber with UV protection properties that maintain the color of the Shakira over time.

The effects of uses contrary to those indicated by the manufacturer for Colombia shall be the responsibility of the installer or user of the product.

DANGER OF ELECTROCUTION AND ESCAPE.

1. LUHFSER fuses cannot protect personnel from electrocution.
2. Distribution dropout fuse cutout can expel hot gases and particles at high velocity during interruption.
3. When engaging a distribution dropout fuse cutout , clear all personnel from the work area.
4. Ejection of the dropout fuse cutout can cause serious injury. Do not align with the pole and fuse holder. Stay clear of the conical space under the fuse holder.