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We are introducing ourselves as leading manufacturers for Motor Controller & other products. Our company is in the field since last 15 years. We would like to become your valuable supplier. We request you to register our firm as a supplier for... |
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| Contact Us |
S. No. 28, Jagtap Dairy, Pimple Nilakh, Pune - 411 027, Maharashtra India.
Tel. : +91-20-2727 0100,
Telefax : +91-20-2727 0800, 2727 6777
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Protection of 3 Phase devices against Over voltage, Under voltage unbalance supply
is one of the major issue in electrical systems.
For safe running of 3-phase devices, special protections that keep a continous
watch on supply conditions are very essentials. The major cause of maximum
load burn-out is overloading which occurs due to unbalance supply. Single phasing
& Reverse phasing conditions LVM-3p detects such conditions & protect the load
from burn cut.
'PROTONs LVM-3P' offer following protections with precise accuracy.
LOW/HIGH voltage tripped to ensure trouble free running of 3-phase Loads.
Reverse phasing or imbalance in Phase voltages, Single phasing protection. |
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Salient Features :- |
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Microcontroller based system. |
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Suitable for Tree phase load. |
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Protection against over voltage |
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Protection against Under voltage. |
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Protection against Single phasing & unbalance. |
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Protection against Reverse phasing. |
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Trip indication for Faults, indication for output relay ON. |
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Under voltage/Over voltage set points are setable. |
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No seperate auxiliary supply required. |
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Technical Specifications :- |
Supply voltage: |
3 Phase 415VAC, 50Hz(No auxilliary supply) |
Output Contacts : |
Twochangeover(NC-C-NO),Rating 5A at 230VAC |
Voltage trip setting |
: Over voltage limit can be set within 430 to 470VAC
Hysterisis between cut off & cut in 10V
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: Under voltage limit can be set within 330 to 370VAC Hysterisis between cut off & cut in 10V |
Trip Time delay |
50m sec |
Reset Mode |
Healthy (ON) : Green LED |
Indications |
Healthy (ON) : Green LED
Over Voltage (OV) : Red LED
Under Voltage (UV) : Red LED
Single Phase (SPP) : Red LED
Reverse Phase (REV PHASE): Red LED |
Operating Temperature Range |
-5 0C to 60 0C |
Relative Humidity |
Din Rail: Base mounting |
Mounting |
dimentions.: 62 (W) X 70 (L) X 110 (D) mm |
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Working :- |
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In the normal run mode, if the supply is within the range then Relay will be ON.
If Over voltage, Under voltage, SPP, Unbalance & Reverse phasing returns in the
supply then Relay will be Off & corresponding Fault LED start blinking.
OV : It becomes blinking when, voltage increases above set limit.
UV : It becomes blinking when, voltage decreases below set limit.
SPP: It becomes blinking when, B phase is abset or phase to phase Unbalance.
(UB: 65+/-10V)
REV PHASE: It becomes blinking when, phase Sequence is changees,
Hystesis between at off & cut in is 10V.
SETTING: OV : Over voltage limit can be set with in 430VAC to 470VAC by OV preset.
UV : Under voltage limit can be set with in 330VAC to 370VAC by UV preset.
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