Presented in casing for Standard DIN 35mm rail (EN 50 022), it is a compact device controlled by a 16 Bit microcomputer, highly stable due to the inclusion of a double state of process watchdog. It withstands permanent and transitory peak surges, as well as low voltage. It can protect multiple, single-phase or three-phase lines, of up to 63A.
It provides diverse measurements and protections programmable in value and delay :
Moreover, constant surveillance of the power input enables an Intelligent Automatic Reset (conditioned). In other words, it resets only on re-establishing normality in the supply. Certain models / versions have Remote Control input and output.
| Single-phase protector / measuring apparatus (2 poles) |
With I. Differential |
| MODEL |
DOV |
| VERSION |
842 |
True RMS and Peak Voltage Measurement |
0V to 1000Vpk |
· |
True RMS and Peak Voltage Measurement |
0V to 500Vpk |
|
True RMS Intensity and Peak Measurement in autoscale |
0A to 20Apk & 0A to 100Apk |
|
Differential Intensity True RMS and Peak Measurement |
0mA at 500mApk |
· |
Active Power (W) and Apparent Power (VA) Measurement |
4 quadrants Resolution 0.1W, 0.1VA |
|
Inductive Reactive Power Measurement |
4 quadrants Resolution 0.1VArL |
|
Capacitive Reactive Power Measurement |
4 quadrants Resolution 0.1VArC |
|
Power Factor and Line frequency Measurement of: |
0.001 to 1
10.00Hz to 100Hz |
|
Active Energy Counter in Real Time |
000000.00001 kWh to 999999.99999 kWh + 9-lap counter |
|
| Reactive Energy Counter in Real Time |
000000.00001 kWh to 999999.99999 kWh + 9-lap counter |
|
Protection due to Peak Surge value and delay programmable |
True RMS
Peak |
245V to 275V & 20mS to 5Seg
350Vpk to 400Vpk & 0.3mS to 5mS |
· |
Protection due to Low Voltage value and delay programmable |
True RMS |
175V to 200V & 20mS to 5Seg |
· |
Protection due to Over Intensity value and delay programmable (DISABLING) |
True RMS
Peak |
5A to 60A & 20mS to 10Seg
7Apk to 84Apk & 0.3mS to 5mS |
|
Protection due to Differential Intensity I D n value and delay programmable |
True RMS
Peak |
5mA to 30mA & 20mS to 160mS
7mApk to 42mApk & 0.3mS to 5mS |
· |
Protection due to Differential Intensity I D n value and delay programmable |
True RMS
Pico |
50mA to 300mA & 20mS to 160mS
70mApk to 420mApk & 0.3mS to 5mS |
|
Independent Programmable Resets due to Differential intensity |
0 to 10 resets and 3 to 240 minutes each one |
· |
Independent Programmable Resets due to Peak Surge |
0 to 10 resets and 3 to 240 minutes each one |
|
Independent Programmable Resets due to Circuit breakers |
0 to 10 resets and 3 to 240 minutes each one |
· |
Real Incremental Protection Test: |
I D n Differential |
· |
Real Incremental Protection Test: |
Peak Surge |
· |
Real Incremental Protection Test: |
Low Voltage |
· |
Real Incremental Protection Test: |
Over-Intensity |
|
Self-testing of Differential + Toroidal Transformer sensor |
· |
Self-testing of outer cabling, internal electronic system |
· |
Chronological recorder of incidents and protections of all the alarms (Value, Tour, Minute, Day, Month, Year) |
|
Totaliser – Counter of cut-off time due to power failure |
|
Independent cut-off counters of all the alarms + accumulated total and historical total |
· |
Alarm register and their history (Maximum and minimum values) |
· |
Register of maximum measurements |
· |
Programmable Start-up delay 0 to 999 sec. |
· |
Manual Cut-off (Reset only with user key code) |
· |
Security settings (Programming of all the parameters only with user key code) |
· |
Average measurement displayed, programmable from 20 Ms to 1000 Ms |
· |
Change of user key code |
· |
Setting by default of Alarms (Value and Delay) |
· |
Automatic / Manual Display / Manual (Data rotation) |
· |
Programmable Calendar Clock |
|
“Info” function (Information about the state of the alarm programming) |
· |
Acoustic and luminous indicator |
· |
