Rockwell Automation 865 Differential Protection Relay - Manual (Page 175)

Technical Data 10-5
865-UM001A-EN-P – July 2009
Table 10.13 – Casing
Degree of protection (IEC 60529) IP20
Dimensions (W x H x D) 208 x 155 x 225 mm
Material 1 mm steel plate
Weight 4.2 kg
Colour code RAL 7032 (Casing) / RAL 7035 (Back plate)
Table 10.14 – Package
Dimensions (W x H x D) 215 x 160 x 275 mm
Weight (Terminal, Package and Manual) 5.2 kg
Protection Stages Differential Protection
Table 10.15 – Differential overcurrent stage ΔI> (87)
Setting range 5 - 50 % I
n
Bias current for start of slope 1 0.50 x I
n
Slope 1 5 - 100 %
Bias current for start of slope 2 1.00 - 3.00 x I
n
Slope 2 100 - 200 %
Second harmonic blocking 5 - 30 %, or disable
Reset time < 60 ms
Reset ratio 0.95
Inaccuracy:
- Starting
±3% of set value or ±0.5% of rated value
- Operating time (I
d
> 1.2 x I
set
) < 60 ms
- Operating time (I
d
> 3 x I
set
) < 50 ms
Table 10.16 – Differential overcurrent stage ΔI>> (87)
Setting range 5.0 - 40.0 x I
n
Reset time < 60 ms
Reset ratio 0.95
Inaccuracy:
- Starting
±3% of set value or ±0.5% of rated value
- Operating time < 40 ms