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NOVATEK-ELECTRO
PH-260t
3.2 Use of the device
3.2.1 Modes of operation
The device may be in the following modes of operation:
«Normal operation»;
«Setting of parameters»;
«Fault».
The device will be in the «Normal operation»mode, if:
The controlled parameter does not exceed the value, set by the User;
The countdown of the automatic re-closure time is over.
In the «Setting of parameters»mode a change of parameter values takes place (Table 4).
In the «Fault»mode the load is off and indicator Fault lights up (the Load indicator does not light).
3.2.2 Operation of the device
3.2.2.1 Voltage control
If the mains voltage exceeds the thresholds set by the User (parameter «» or «», Table 4), the
countdown of the load disconnection delay starts (fixed cutoff delay, Table 2). The Load and Fault indicators are
blinking. After the completion of the countdown of the trip delay time and, if up to this point, the voltage has not
taken an acceptable value:
- the device will enter the «Fault» state;
- the display alternately displays the rest of the re-closure time by voltage in seconds and the current value of the
mains voltage. During the display of the rest of the re-closure time, the dot in the lowest digit of the display lights up
and the U[V] indicator does not light (pos. 13, Fig. 1), and when the voltage value is displayed, the U[V] indicator
lights up.
After the completion of the countdown of the automatic re-closure time according to the voltage and if the mains
voltage assumes an acceptable value, the device will connect the load and the Load indicator will light (the Fault
indicator will go out).
If the voltage protection responded to the upper voltage threshold, the device will connect the load when the
voltage drops to the value minus the hysteresis value. If the voltage protection tripped by the lower voltage
threshold, the device will connect the load, when the voltage rises to value plus the hysteresis value. The
device will enter the «Normal operation»state.
If the voltage protection (parameter , Table 4) is disabled, then when the mains voltage is lower than 120 V
or if the voltage is higher than 285 V, the device will go into the «Fault» state. After the countdown of the re-closure
time by voltage, the device will move to the «Normal operation»state, if the mains voltage is between 165 V and
275 V.
3.2.2.2 Power and current control
If the value of the controlled parameter is exceeded (menu item «», Table 4), and the Load and Fault
indicators flash.
After completion of the countdown of the trip delay time and, if up to this point, the controlled parameter has not
accepted an allowable value:
–the device will enter the «Fault» state;
–the display will show the rest of the automatic re-closure time in minutes and one of the indicators (pos. 9-
12, Fig. 1), corresponding to the parameter beyond which the protection has tripped, will flash.
If a voltage fault occurs while counting the AR time by power or current, the display will show the voltage value,
periodically replaced by the remaining AR time by voltage (when AR by voltage is displayed a point in the least
significant digit is lit on the display). Also, instead of one of the indicators (pos. 9-12, Figure 1), the U[V] indicator
will blink.
If the voltage failure is gone, but the current or power failure remains, then the display will show the AR value (by
current or power) again, and instead of the U[V] indicator (pos. 13, figure 1) one of the indicators will blink again
(pos. 9-12, Figure 1), corresponding to the parameter when exceeded the protection was activated.
If the countdown of automatic re-closure time by power or current is prohibited (parameter «», value «»,
Table 4), the device will not turn on the load, the display will show «». To turn on the load, you must turn off the
power of the РН-260t and turn it on again, or set the automatic re-closure time (parameter «», Table 4) for
580 min. or less.
Note: when selecting a controlled parameter (menu item «
», Table 4), the rest parameters of this item are not
controlled.
3.2.2.3 Contact group overheating control
If the overheating protection of the contact group is activated (temperature above 85 °C), the device will
disconnect the load and further operation of the PH-260t will be blocked. The display will show «», all other
indicators will go out. To resume operation of the device, you must disconnect the device from the mains, then turn
it back on.