|
 Includes
First Customer Protection
The M-5329 LTC Backup Control provides the extra protection that can
save your customers from the hazards and inconvenience of excessively
high or low voltage on any phase. Defective LTC tapchanger controls can
cause either too high or too low a voltage along the line, possibly damaging
customers' motors, computers or televisions. Even when the control is
operating properly, customers close to the transformer may receive dangerously
high voltage as the line drop compensator attempts to maintain a constant
voltage under heavy load at a central point on the distribution line.
The Beckwith Electric M-5329 LTC Backup Control can be installed as a
solution to both of these problems.
The M-5329 will prevent a defective LTC tapchanger control from running
the voltage outside the upper and lower voltage limits and, in addition,
will prevent the line drop compensator from raising the voltage too high
under full load or overload conditions. Setting the voltage bands on the
M-5329 slightly wider than the transformer control limits will assure
that a failed control will not result in a runaway LTC transformer. Under
full or overload conditions, the M-5329 automatically takes over as an
upper voltage limit control, not affected by load current, to prevent
damage to equipment close to the transformer. While the Block Raise contact
prevents a raise operation, a Lower contact forces the tapchanger down
if the primary voltage should subsequently rise.
- Prevents a defective LTC tapchanger control from running the voltage
outside the upper or lower limits.
- Prevents the line drop compensator from raising the voltage too high
under full or overload conditions.
- Monitors all three-phases and blocks LTC tapchanger opertion if any
phase is outside the setpoints.
- Fully transient protected and operates within ±1% voltage accuracy
over a temperature range of -40° to +80° C.
Sales and Service
For sales and service information
contact your local representative
or contact the factory:
E-mail: sales@beckwithelectric.com
Call (727) 544-2326
or Fax (727) 546-0121
|
 |
 |
Note: Documents are provided in Adobe
Acrobat PDF format and require Acrobat
5.0 or higher to view.
|
|
