Monitoring relays RPN-.VM.-A400
Monitoring relays RPN-.VM.-A400
Multifunctions monitoring relays (AC voltage monitoring in 3-phase network - 3~ 400 V or 3(N)~ 400/230 V). Monitoring of exceeding the Umin/Umax threshold, phase failure, phase sequence.
Technical info
Histeresis mode. Adjustment of tripping delay. Cadmium - free contacts 1 CO and 2 CO. AC input voltages. Cover - modular, width 17,5 mm. Direct mounting on 35 mm rail mount acc. to EN 60715.
Technical data
| Output circuit - contact data |
|
| Number and type of contacts |
1CO, 2CO |
| Contact material |
AgSnO2 |
| Max. switching voltage |
300 V AC |
| Input circuit |
|
| Supply voltage AC |
= monitoring voltage |
| Rated voltage |
RPN-.VM-...: ≤ 1,5 W RPN-.VMN-...: ≤ 1,3 W |
| Range of supply frequency AC |
48...63 Hz |
| Meassuring circuit |
|
| Functions |
MINMAX - phase monitoring SEQ - phase sequence monitoring histeresis mode |
| Ranges of voltage |
MIN - smooth adjustment: 75...95% MAX - smooth adjustment: 105...125% |
| Time ranges of tripping delay |
step adjustment: (0,1 s; 1 s; 2 s ¸); 3 s; 4 s; 5 s; 6 s; 7 s; 8 s; 9 s |
| Insulation |
|
| Rated surge voltage |
4 000 V AC 1,2/50μs |
| Insulation rated voltage |
500 V AC |
| Overvoltage category |
III |
| General data |
|
| Mechanical life |
> 3 x 107 |
| Electrical life |
> 0,5 x 105 12 A, 6 A, 250 V AC |
| Ambient temperature - operating |
-20...+60 oC |
Functions
Minimum voltage monitoring (with delayed disconnection of contact R). If the voltage on one of the phases drops below the threshold Umin, then the time T2 - switching off of the operational relay R - starts timing out. At the same time the red diode E slow flashes. When time T2 elapses, the red diode E lights up permanently and the operational relay R is switched off. If the voltage on a given phase exceeds the voltage Umin increased by the value of hysteresis, then the red diode E goes off and the operational relay R is switched on.
Maximum voltage monitoring (with delayed disconnection of contact R). If the voltage on one of the phases rises above the threshold Umax, then the time T2 - switching off of the operational relay R - starts timing out. At the same time the red diode E fast flashes. When time T2 elapses, the red diode E lights up permanently and the operational relay R is switched off. If the voltage on a given phase is lower than voltage Umax minus the value of hysteresis, then the red diode E goes off and the operational relay R is switched on.
Phase failure monitoring (without delay for disconnection of contact R). A drop in any of the phases below the threshold Uoff = 0,6 Un (rated voltage) will immediately light up red diode E and immediately switch off the operational relay R.
SEQ - Phase sequence monitoring (without delay for disconnection of contact R). If all the phases are connected to the terminals in the correct sequence (L1->L1, L2->L2, L3->L3) or in a consecutive sequence, then the operational relay R switches on. When the phase sequence changes, red diode E lights up immediately and the operational relay R is immediately switched off.
MINMAX - Voltage monitoring between Umin and Umax values. When phases L1, L2, L3 are switched on - when the voltages of all phases are between the thresholds Umin and Umax, after approximately 500 ms (time T1) the green diode U lights up and the operational relay R is switched on.