Three Phase Voltage And Frq. Monitor Relay RNPP-311-1
Product Details:
Voltage Type | AC |
Voltage (V) | 400 - 415V AC |
Number of Poles | 4 Pole, 3 Pole |
Application | Mains Voltage & Frequency Monitoring |
Current (Amps) | 5A |
Three Phase Relays For Monitoring Voltage, Phase Imbalance and Phase Sequence
The RNPP-311 voltage monitoring relay is designed for protection of three-phase loads against major type of mains faults, as:
- RMS voltage reaching beyond admissible thresholds
- Phase sequence order violation and phase coincidence
- Violation of the mains voltage phase completeness and symmetry
The device performs monitoring the main circuit parameters and de-energizes load when the parameters fall beyond specified boundaries.
The front panel LEDs display the following:
- Presence of voltage in each phase
- Emergency de-energizing the load
The trip setting for the maximum/minimum voltage threshold is combined and is set by adjustable potentiometer as percentage of the rated voltage. RNPP-311 automatically energizes load upon expiration of the AR (automatic restart time) since the moment of the mains parameters recovery. The devices are manufactured with standard AR delay set to 5 sec, but optionally, they can be manufactured with the AR delay presets of 0, 10, 60, 100, 150, 200 and 250 sec.
Documentation for this device
Additional Information:
- Item Code:Â RNPP-311-1
- Port of Dispatch:Â New Delhi, India
TECHNICAL BRIEF Rated phase line voltage, V |
 240/415 |
Range: Umax-tripping / Umin,% of nominal |
5 - 25 |
Fixed delay in Umin, seconds |
12 |
The magnitude of the amplitude phase imbalance, V |
60 |
Fixed response time of Umax,seconds |
1.5 |
Fixed reaction time on loss of one phase, seconds |
1.5 |
AR time after recovery voltage parameters,seconds |
5 |
The accuracy of determining the threshold voltage, V |
to 3 |
Fixed setting to reduce the frequency, Hz |
47 |
Fixed setting to enhance the frequency in Hz |
57 |
Fixed. Response time. to reduce the frequency,seconds |
12 |
Fixed. Response time. to increase the frequency,seconds |
 1 |
The accuracy of determining the threshold frequency, Hz |
± 0,3 |
Starter coil voltage, V, AC |
110 - 380 |
Starter coil voltage, V, DC |
12-36 |
Voltage at which the stored performance, V |
from 80 to 500 |
Short-Term permissible max. voltage at which survived efficiency V |
700 |
Hysteresis voltage, VÂ Â |
6-7 |
The total current consumption of the network, mA, not more |
35 |
Operating temperature, °C |
from -35 to + 55 |
Storage temperature, °C |
from -45 to + 70 |
Switching resource under load of 5 A, times, not less |
100000 |