Description
The Model 259 3-Phase Monitor
is designed to protect individual 3-phase equipment and motors,
or in conjunction with shunt trip breakers. When correct voltage
and phase rotation is applied, an internal DPDT relay energizes.
A fault condition (phase
loss, phase reversal, or low voltage) drops out the relay
and lights the LED failure indicator. The Model 259 will
detect a phase loss condition even when regenerative voltage
is present.
The Model 259 may be used
with Wye or Delta systems and requires no neutral connection.
Standard operating ranges are available from 120 to 575
VAC, 60Hz and 380 VAC, 50Hz.
 |
•
DPDT 600 VAC output contacts
• Adjustable trip delay
• Adjustable voltage level
• Adjustable restart delay
|
Applications
