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NOVATEK-ELECTRO
EM-129
With a further increase in voltage by another 30 V (285 V), the load will be tripped off with a fixed time delay of
0.2 s.
When the voltage rises above 300 ± 10 V, the load will be tripped off with a fixed time delay of 0.05 s.
After tripping off the load, if the mains voltage drops below 250 V (“
Upper cut-
off threshold” 255 V
minus
“
Hysteresis
” 5 V
), it will return to automatic operation after the automatic reclosure time (5 s).
If the voltage drops below the threshold of 190 V (“
Lowe
r
cut-off threshold
”), the load will tripped off in 12.0 s
(“Cutoff delay by the lower threshold”).
With a further decrease in voltage below 145 V, the load will be tripped off with a fixed time delay of 0.25 s.
After load tripping off, if the mains voltage rises above 195 V ("
Lower cut-off
"
threshold
190 V plus "
Hysteresis
"
5 V), there will be a return to automatic operation after the automatic reclosure time.
The device
operation in the emergency mode is described in paragraph 3.5.6 (“Load tripping off due to a
failure”).
3.5.3 Frequency load protection (disabled by default)
During operation, the EM-129 constantly measures the value of the frequency of the mains voltage.
If frequency rises above the threshold of 51.0 Hz (“Upper cutoff threshold”), the load will be tripped off in 10.0 s
(“Cutoff delay”).
After disconnecting the load, if the mains frequency drops be
low 51.0 Hz (“
Upper
cutoff
threshold
”), it will return
to automatic operation after the automatic reclosure time.
If frequency drops below the threshold of 49.0 Hz (“Lower cut-off threshold”), the load will tripped off in 10.0 s
(“Cutoff delay”).
After tripping off the load, if the mains frequency rises above 49.0 Hz ("
Lower shutdown threshold
"), it will return
to automatic operation after the automatic reclosure time.
The operation of the device
in emergency mode is described in paragraph 3.5.6 (“Load shedding due to a
failure”).
3.5.4 Load current protection
During operation, the EM-129 constantly measures the amount of current consumed by the load.
If the load current rises above the threshold of 63 A (“Cutoff threshold”), the load will be off in 5.0 s (“Cutoff
delay”).
After tripping off the load, there will be return to automatic operation after the automatic reclosure time.
The operation of the device
in emergency mode is described in paragraph 3.5.6 (“Load shedding due to a
failure”).
3.5.5 Load protection by power consumption (disabled by default)
During operation, the EM-129 constantly measures the amount of power consumed by the load.
If the load power increases above the threshold of 14,490 W (“Cutoff threshold”), the load will be off in 5.0 s
(“Cutoff delay”).
After disconnecting the load, there will be return to normal operation after the reclosure time.
The operation of the device
in emergency mode is described in paragraph 3.5.6 (“Load shedding due to a
failure”).
3.5.6 Load shedding due to a failure
In the event of an emergency (overvoltage, overcurrent, overvoltage, etc.), the load is off, the reclosure time
starts and the status indicator (Figure 1, pos. 2) starts to glow red.
With the end of the emergency, the status indicator blinks red, indicating that the automatic reclosure time is
running, after which the load will be automatically tripped on.
If the reclosure time has expired before the emergency disappears, the load will be tripped on without delay after
the end of emergency.
If the n
umber of attempts of automatic restarting has been exceeded (for current and power protection “3”, for
voltage protection “no”), the device will block the load from being switched on, and the status indicator will
constantly glow in red. To restore the EM-129, it is necessary to disconnect it from the network, wait for 5 s and turn
it on again.
3.5.7 Factory Reset
Press and hold the Wi-Fi button on the front panel of the device for 20 seconds.
After 20 seconds, when the status indicator will turn purple, release the Wi-Fi button.
When the factory reset is completed, the status indicator will stop glowing in purple, and the device will
automatically reboot.
The device has been reset to factory settings and is ready for use.
3.5.8 Protocol of data exchange between EM-129 and the "my.overvis.com" service
The protocol of data exchange between EM-
129 and the “my.overvis.com” service is a closed protocol and has
not been disclosed for security purposes.
All data is received and sent in encrypted form using 256 bit encryption.