AUMSHIVAY ENGINEERING PRIVATE LIMITED
B-21, Bhan Nagar, Queens Road, Jaipur-302021
Website: www.aumshivay.com, www.omengineering.in
E-mail:[email protected]
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REG. OFFICE:VILLA NO. 60,LATA NAGAR, KALWAR ROAD, JHOTWARA, JAIPUR - 302012
TM
TM
Features;
Automatic correction of CTs’ mismatch and Transformer Vector Group.
Two differential current levels.
2nd and 5th harmonic adjustable restraint levels.
Programmable percentage bias curve.
Oscillographic recording.
Modbus Communication Protocol.
Maximum Demand & Inrush Recording.
F87T : High-set Phase
Differential
Current setting range :
d>> = (2 - 20)In
, step 0.01In
Detection time:
6ms < t < 20ms
Peak current detection with DC offset restraint.
Digital Inputs
B1
= Operation block input
B2
= Harmonic restraint's reduction
B3
= Oscillographic record external trigger
Approval: CE
Reference Standards
Dielectric test voltage- IEC 60255-5
Impulse test voltage - IEC 60255-5
Insulation resistance - >100 M
Characteristics
Accuracy at reference value of influencing factors
:
2% In for measurement and 2% +/- 10ms for times.
Rated Current:
In = 1 or 5A
Current overload :
200 A for 1 sec; 10A continuos
Burden on current inputs :
Phase : 0.01VA at In = 1A; 0.2VA
at In = 5A and Neutral : 0.015VA at In = 1A ; 0.35VA at In = 5A.
Average power supply consumption:
8.5 VA
Output relays :
Rating 5 A; Vn = 380 V
A.C. resistive switching = 1100W (380V max)
make = 30 A (peak) 0.5 sec.
break = 0.3 A, 110 Vcc,
L/R = 40 ms (100.000 op.)
