A-3
INSTALLATION INSTRUCTIONS FOR COMPLIANCE WITH UL
Install the FR-ABR brake resistors as follows:
•
The resistor may be mounted horizontally or vertically, depending on a
suitable surface location.
•
When the resistor is mounted externally to the enclosure housing the
inverter, install a solid Type 1 enclosure at least 8 times the volume size
of the resistor that incorporates mesh or perforated steel type ventilation
openings at each end of the resistor. Note, the vent openings shall not be
greater than 10 mm diameter.
•
Secure the enclosure to a non-combustible surface only, such as metal or
concrete.
•
Mount the resistor inside the Type 1 enclosure and wire it in accordance
with the NEC for North America installations or any other local codes.
Note, when the resistor and inverter are mounted together within a suitable
enclosure, the mesh covering is not required. Please take care that the
Inverter unit / resistor internal enclosure ambient does not exceed 50 deg. C.
Enclosure surface presents a possible burn hazard. After installation, the
following marking in minimum 3 mm (1/8 in.) sized lettering shall be provided
on the enclosure where visible:
CAUTION : HOT SURFACE. TO REDUCE RISK OF BURN - DO NOT TOUCH.
FR-ABR_UL.book 3 ページ ２００４年３月１６日 火曜日 午後３時５５分
