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.
| Three-phase protector / measuring apparatus (4 poles) |
With I. Differential |
| MODEL |
DOV |
| VERSION |
842RT |
| True RMS Surge and Peak Surge Measurement |
0V to 1000Vpk L1, L2, L3 independientes |
· |
| True RMS Intensity and Peak Surge Measurement in autoscale |
0A to 20Apk & 0A to 100Apk independent L1, L2, L3 |
|
| I Differential - True RMS and Peak Surge Measurement |
0mA to 500mApk |
· |
| Protection due to Peak Surge True RMS |
245V to 275V & 20mS to 5Seg independent L1, L2, L3 |
· |
| Protection due to Peak Surge |
350Vpk to 400Vpk & 0.3mS to 5mS independent L1, L2, L3 |
· |
| Protection due to True Low Voltage |
175V to 200V & 20mS to 5Seg independent L1, L2, L3 |
· |
| Protection due to Over-intensity True RMS |
5A to 60A & 20mS to 10Segindependent L1, L2, L3 |
|
| Protection due to Peak Over-intensity (DISABLING) |
7Apk to 84Apk & 0.3mS to 5mS independent L1, L2, L3 |
|
| Protection due to I. Differential True RMS |
50mA to 300mA & 20mS to 160mS independent L1, L2, L3 |
|
| Protection due to Peak I. Differential |
70mApk to 420mApk & 0.3mS to 5mS independent L1, L2, L3 |
|
| Protection due to I. Differential True RMS |
5mA to 30mA & 20mS to 160mS independent L1, L2, L3 |
· |
| Protection due to Peak I. Differential |
7mApk to 42mApk & 0.3mS to 5mS independent L1, L2, L3 |
· |
| Rearmes independientes programables |
I Differential |
From 0 to 10 Resets and from 3 to 240 min. each one |
· |
| Rearmes independientes programables |
Over-intensity |
|
| Rearmes independientes programables |
Circuit breaker |
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| Real Incremental Protection Test: |
Differential intensity test |
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| Surge test V1 |
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| Surge test V2 |
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| Surge test V3 |
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| Low voltage test V1 |
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| Low voltage test V2 |
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| Low voltage test V3 |
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| Test sobre intensidad I1 |
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| Test sobre intensidad I2 |
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| Test sobre intensidad I3 |
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| Self-testing of Differential + Toroidal Transformer sensor |
· |
| Self-testing of outer cabling, internal electronic system |
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| Chronological recorder of incidents and protections of all the alarms (Value, Tour, Minute, Day, Month, Year) |
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| Totaliser – Counter of cut-off time due to power failure |
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| Independent cut-off counters of all the alarms + accumulated total and historical total |
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| Alarm register and their history (Maximum and minimum values) |
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| Register of maximum measurements |
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| Programmable Start-up delay 0 to 999 sec. |
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| Manual Cut-off (Reset only with user key code) |
· |
| Security settings (Programming of all the parameters only with user key code) |
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| Average measurement displayed, programmable from 20 mS to 1000 mS |
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| Change of user key code |
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| Setting by default of Alarms (Value and Delay) |
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| Automatic / Manual Display / Manual (Data rotation) |
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| Programmable Calendar Clock |
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| “Info” function (Information about the state of the alarm programming) |
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| Acoustic and luminous indicator |
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