Dings Magnetic Group RECTIFIER - Manual

BULLETIN NO. 2530F
DATE: 03/08
RECTIFIER
INSTRUCTIONS
IMPORTANT
Check immediately when Rectifier is received for possible damage.
Report damage to the delivering carrier. Use care in uncrating to
avoid damage.
Read this bulletin carefully before operating the Rectifier.
DESCRIPTION
A Dings Rectifier is auxiliary equipment that supplies electric power to
electromagnetic separators. It converts the alternating current from a
local power source to the direct current needed by such separators.
The Dings Rectifier consists of a hinged door cabinet and an internal
assembly of electrical components. Ratings and sizes or components
in this solid state silicon diode design determine output in volts and
watts.
Rectifiers are available in a range of wattages to handle the power
requirement of any size electromagnetic separator. A Rectifier cabi-
net can be selected in a particular NEMA (National Electrical
Manufacturers Association) enclosure according to environmental
conditions at the installation.
INSTALLATION
Mount the Rectifier in a level position. Use mounting holes provided.
Install it in a location that is suited to its NEMA rating. The NEMA rat-
ing of the Rectifier is usually coded at the end of the model number -
after the dash. Do not install rectifier near heat generating equipment
or in direct sunlight.
ELECTRICAL CONNECTIONS
All wiring must conform to prevailing local and national electrical
codes. If applicable, reconnect transformer taps to match your line
voltage.
Line voltage must be within +5% of Rectifier voltage selected for con-
tinuous operation. For short periods of time, +10% is tolerable.
For 3 phase Rectifiers, check phase to phase voltages. They must be
equal. Connect the AC line to terminals marked L1, L2, L3. Connect
the DC load to terminals marked (-),(+).
Insert a fused disconnect switch in front of the Rectifier. Time delay
line fuses should not be more than 1.75 times the AC input amps of
Rectifier. If an inverse time circuit breaker is used, use 2.50 times the
AC input amps of the rectifier. DC switching is not recommended, but
if necessary, use switches which hold the maximum voltage to a
value that’s less than 2.5 times the rated output voltage.
Do not ground the DC circuit or the magnet will be damaged. Covers
must be closed when Rectifier is operating.
4740 W. Electric Ave. Milwaukee, WI 53219 414/672-7830 414/672-5354 Fax www.dingsmagnets.com
CAUTION
This Rectifier is designed for operation at elevations up to 5000 feet
above sea level. For elevations exceeding 5000 feet, consult factory
for proper derating information.
This Rectifier is designed for operation at temperatures up to 40 o C
(104 o F). For higher temperatures, consult factory for proper derating
information.
MAINTENANCE
Periodically inspect, and if necessary clean air inlets and outlets.
Remove dust and debris from Rectifier components and bottom sur-
face inside cabinet.
TROUBLE SHOOTING
If the Rectifier fails to operate:
1) Check all overloads (bi-metallic components) to see if any have
tripped. Wait a few minutes before resetting them.
2) Check to see if correct heaters for selected voltage are installed,
and that load does not exceed nameplate rating.
3) Check all fuses.
4) Inspect all Rectifier components.
5) Check for equal phase to phase voltages at line connections and
at secondary of transformer.
6) Disconnect Rectifier and check for open or shorted diodes.
Check for loose connections.
7) After repairs have been made, switch on Rectifier with load dis-
connected, and:
a) Measure input voltage
b) Measure transformer secondary voltages
c) Measure DC output voltage
d) If all readings comply with nameplate data, reconnect load.
REPLACEMENT PARTS
Rectifier parts can be purchased from Dings Company in
Milwaukee. Call 414-672-7830 Please have nameplate information
ready to supply while on the phone.