CROUZET CONTROL
Crouzet - 3 phase, phase control MWUA
Control relay for phase monitoring with regeneration of voltage and asymmetry. Adjustable switch at the front for adjustment of correct voltage in 3-phase networks. Voltage switch's position is not registered until the operating voltage is switched on. If the switch position is changed during operation, all LEDs (LED indications) begin to flash but the unit will continue to function normally with the voltage that was set at the most recent power connection. The LEDs return to normal function when the correct voltage is restored. The relay monitors the correct phase sequence between the three phases or if any phase is lacking (measured U<0.7xUn), 70 % of the returned voltage. The asymmetry setting is made at the front between 5 and 15 % (the rated voltage between the phases Un x degree of asymmetry, %). Deviations in over-/under-voltage are adjustable between 2 and 20 % of the line voltage (window relay function). In the event of incorrect phase sequence or phase interruption, the relay immediately produces an alarm (drops out), and in the event of an asymmetry or voltage fault, the relay drops out after the set time Tt. If the power is switched on with a measured fault, the relay remains deactivated. Green LED (Un) indicates supply voltage OK.Yellow LED (R) indicates active relay output.
Phase interruption, phase sequence and asymmetry | Over- and under-voltage with range control |
|
|
1: L1 | 1: Limit value, over-voltage |
2: L2 | 2: Hysteresis |
3: L3 | 3: Limit value, under-voltage |
4: Limit value for asymmetry | 4: L1, L2, L3 |
5: Hysteresis | 5: Relay |
6: Relay | 6: Delay upon exceeding limit value Tt |
7: Delay upon exceeding limit value Tt |
|
Technical data
Supply voltage | 3x208-480 V AC 50/60 Hz ±10 % |
Power consumption | 1.8 VA |
Selection of rated voltage (line) | 208, 220, 380, 400, 415, 440, 480 V |
Time delay upon exceeding the limit value Tt | 0.1-10 sec. |
Time delay, alarm | <200 ms |
Time delay, start-up | 500 ms |
Hysteresis | 2 % of Un static value |
Output relay | Max. breaking current 5 A |
Operating temperature | -20 °C to +50 °C |
Weight | 80 g |
Approval |
|
Mounting | DIN rail |
Dimensions
|
Connection
|
F1: Fast-blow fuse 100 mA (recommendation) |
Order number
Order no. | Description | Supply voltage |
84873025 | MWUA phase sequence break, asymmetry (1 change-over contact) | 3x208-480 V AC |
- Triggers alarm upon incorrect phase sequence, phase interruption, asymmetry and over-/under-voltage
- Adjustable line voltage
- Measures returned voltage to 70 %
- 17.5 mm cabinet with DIN rail
Selected variant
Specifications
| Approvals | CSA, GL, RoHS, UL |
|---|---|
| Breaking capacity | 5A, 250V AC/DC |
| IP Class Connection | IP20 |
| IP Class Housing | IP30 |
| Output | Relay |
| Selection of rated voltage | 208, 220, 380, 400, 415, 440, 480 V |
| Supply voltage | 3 x 208-480V AC |
| Temperature range bearing, from | -40 °C |
| Temperature range bearing, to | 70 °C |
|---|---|
| Temperature range from | -20 °C |
| Temperature range to | 50 °C |
| Time Delay Alarm | 0,2 s |
| Time Delay On Crossing The Threshold | 0,1-10s |
| Time Delay Start | 0,5 s |
| Weight | 80 g |
Product description
Control relay for phase monitoring with regeneration of voltage and asymmetry. Adjustable switch at the front for adjustment of correct voltage in 3-phase networks. Voltage switch's position is not registered until the operating voltage is switched on. If the switch position is changed during operation, all LEDs (LED indications) begin to flash but the unit will continue to function normally with the voltage that was set at the most recent power connection. The LEDs return to normal function when the correct voltage is restored. The relay monitors the correct phase sequence between the three phases or if any phase is lacking (measured U<0.7xUn), 70 % of the returned voltage. The asymmetry setting is made at the front between 5 and 15 % (the rated voltage between the phases Un x degree of asymmetry, %). Deviations in over-/under-voltage are adjustable between 2 and 20 % of the line voltage (window relay function). In the event of incorrect phase sequence or phase interruption, the relay immediately produces an alarm (drops out), and in the event of an asymmetry or voltage fault, the relay drops out after the set time Tt. If the power is switched on with a measured fault, the relay remains deactivated. Green LED (Un) indicates supply voltage OK.Yellow LED (R) indicates active relay output.
Phase interruption, phase sequence and asymmetry | Over- and under-voltage with range control |
|
|
1: L1 | 1: Limit value, over-voltage |
2: L2 | 2: Hysteresis |
3: L3 | 3: Limit value, under-voltage |
4: Limit value for asymmetry | 4: L1, L2, L3 |
5: Hysteresis | 5: Relay |
6: Relay | 6: Delay upon exceeding limit value Tt |
7: Delay upon exceeding limit value Tt |
|
Technical data
Supply voltage | 3x208-480 V AC 50/60 Hz ±10 % |
Power consumption | 1.8 VA |
Selection of rated voltage (line) | 208, 220, 380, 400, 415, 440, 480 V |
Time delay upon exceeding the limit value Tt | 0.1-10 sec. |
Time delay, alarm | <200 ms |
Time delay, start-up | 500 ms |
Hysteresis | 2 % of Un static value |
Output relay | Max. breaking current 5 A |
Operating temperature | -20 °C to +50 °C |
Weight | 80 g |
Approval |
|
Mounting | DIN rail |
Dimensions
|
Connection
|
F1: Fast-blow fuse 100 mA (recommendation) |
Order number
Order no. | Description | Supply voltage |
84873025 | MWUA phase sequence break, asymmetry (1 change-over contact) | 3x208-480 V AC |
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