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Apparent
Power Transducer
This transducer is used for measurement
of Apparent Power for single phase (STE-A-7T)
system as well as for 3-phase, 3-wire (STE-B-7T)
system and 3-phase 4-wire (STE-C-7T) systems
with balanced and unbalanced load. The output
is a load independent DC current or voltage
which is proportional to input power. The
output can be connected directly to indicating
instruments or to data transmission system. |
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Features>
- Available
in accuracy class index - 0.2, 0.5, & 1.0
- Withstands
wide temperature variations.
- VA
burden on CT/PT very low. - < 0.5 VA
- Low
internal consumption.
- Wide
range of Input / Output to meet National / International
requirements.
- Comply
to revised IEC 688-1 standards.
- Flexibility
in auxiliary power supply requirements - A.C.
/ D.C.
- Rugged
and vibration resistant.
- Withstands
seismic test as per IEC 344-1974 for Nuclear
Power Applications.
- Available
in dust proof sheet plastic enclosures suitable
for Back panel / Din rail mounting.
- Multiple
outputs also available - upto 4.
- High
input / Output isolations - 4.0 KV.
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Characteristics
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Technical
Data
| Measuring
Range |
0-0.8-1.2
Vn x In |
| Rated
Input |
110/415V
AC, 1/5A AC |
| Input
Frequency |
50Hz
+/- 10% |
| Internal
Consumption |
<
0.5 VA for each input
< 4VA for ry voltage
Self Powered |
| Auxiliary
Power Supply |
110/240
V AC
12/24/48/110/220V DC
Self Powered |
Nominal
Output
(Unipolar/Bipolar) |
0-2.5,
5, 10 mA DC
0-5mA DC / 4-20mA
0-10 mA DC |
Load
Range (Ohms)
a) Current Output
b) Voltage Output |
Max 15V/Iout
Min 5K Ohms |
| Residual
A.C. Ripple |
<
1% (P-P) |
Overload
Capacity
a) Continuous
b) Momentary |
1.2 Vn, 2.0 In
2.0 Vn for 1 sec.
20 In for 1 sec. |
| Accuracy
Class |
0.3/0.5/1.0 |
| Response
Time |
<
0.5 sec |
| Input
- output Isolation |
4
KV |
| Operating
Temperature |
0
- 50°C |
| Impulse
Voltage Test |
Confirms
to IEC 251- 5KV having waveform of 1.2/50
microseconds. |
| HF
Interference |
Confirms
to IEC 255-4 |
| Environment
Condition |
User
group II as per IEC 688 |
| Configuration |
1-Phase,3-Phase/3-wire,3-Phase/4-wire |
| Number
of output |
1,
2, 3 |
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Block Diagram
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