 GROUND FAULT MONITORING SYSTEM
Superintend Ground Fault Monitoring
System, from Neel, ensures maximum electrical safety
Good grounding of electrical systems is most important. Most
Power Quality problems in electrical systems are due to
wiring grounding problems.
A properly grounded electrical system exists when a
grounding conductor is connected to the neutral conductor
only at the Input transformers. From this point on, the
neutral & ground conductors should not be bonded together.
With Advanced Equipment like Computers, CNC M/Cs & other
Digitally controlled equipment, the quality of ground &
ground currents are of prime importance.
Harmonics can also cause large amount of ground currents. It
can cause loss
of memory, data corruptions or at times system failure.
Hence, ensures that the ground currents are within
permissible limits, under all dynamic conditions of load.
| Salient
features |
| |
|
 |
Prevent HF disturbaces and
transients generated by neutral and ground being
connected together. |
|
|
Prevent induction of strong magnetic
peak fields, harmful in recording studios and areas
where accurate magnetic measurements are desired. |
|
|
The Superintend supervising system
helps detect faults & generates alarm in case of
wiring errors, neutral to ground faults, connection
of defective devices, insulation damage, leakage
current insufficient to blow a fuse or trip a
circuit breaker. |
|
|
Eliminate shock hazards in hospital
& health care applications caused due to large
voltage differences between ground potential of
separate grounding points. |
|
|
Advanced level software facilitates
real time monitoring of total electrical grounding
system from central P.C. |
|
|
Saves fault location time and costs.
With a multi channel supervising system the average
time to trace ground fault is <10 mins. |
|
Applications |
| |
|
|
Data processing facilities
|
|
|
Health Care Facilities |
|
|
Office building & hotels
|
|
|
Automated Industrial Plants
|
|
|
Telecommunication centers
|
|
|
Fire hazard areas |
|
Technical Specification |
| |
|
VR-12 |
VRE-10 |
VRE-11 |
VRE-80 |
|
|
Supply Voltage |
230V 50Hz |
18 to 24VAC |
230V 50 Hz |
230V 50Hz |
|
|
Power Consumption |
1.5VA |
1.5VA |
1.5VA |
4.5VA |
|
|
Measuring Range |
30mA.,
10A |
5mA to
9.99 A |
1mA to
10 A |
1 mA to
11 A |
|
|
Measuring accuracy with
closed transformer |
+/-5% |
+/-5% |
+/-5% |
+/-5% |
|
|
Measuring accuracy with
closed transformer |
+/-10% |
+/-10% |
+/-10% |
+/-10% |
|
|
Measuring accuracy with
closed transformer |
+/-5% |
+/-5% |
+/-5% |
+/-5% |
|
|
Measuring Cables |
max 32
fit |
max 300
fit |
max 300
fit |
max 300
fit |
|
|
Alarm settings |
30 mA to
10 A |
10 mA to
9.5 A |
10 mA to
10 A |
5 mA to
10 A |
|
|
Delay time settings |
0.1 to
10 sec. |
0.14 to
60 sec. |
0.14 to
60 sec. |
upto 95
s |
|
|
Alarm relay |
two potential free change-over
contacts,
max 250 VAC 5 A |
change over contacts
max 250 VAC 1.25 A |
change-over contacts
max 250 VAC 5 A |
over
contacts,
max 250 VAC 5 A |
|
|
Analogue output |
|
|
1mV=1mA |
1mV=1mA |
|
|
Analogue output range |
|
|
1mV to
2.5 A |
1mV to
2.5A |
| VCPU-XX |
|
|
Supply Voltage |
230V 50 Hz |
Measuring accuracy with closed
transformer |
+/- 5% |
|
|
Power consumption |
70 VA |
w8ith
split transformer |
+/- 10% |
|
|
Measuring range |
|
Alarm
settings |
30 mA to
9999mA |
|
|
Local measuring point |
10mA to
11A |
Time
delay setting |
to 99
sec. |
|
|
Remote measuring point |
30mA to
11A |
Alarm
relay |
|
|
|
Measuring length |
|
one
relay for 16 channels 2 pcs change
over contacts
max 30 VAC 1.25A |
|
|
|
Local channel |
max 300
ft |
|
|
|
|
Remote channel |
max 3000
ft |
|
|
|
