ISA T1000 PLUS - Connection of the Relay

DOC. MIE91093 Rev. 1.34 Page 41 of 145
0.001
0.01
0.1
1
10
1
10
100
X = CURRENT [ A ]
Y = VOLTAGE [ V ]
Phase R
Lower Limit
Characteristic V
o
- I
o
at I
o
= - 90°
 V1=100 V
 I1= 5 mA
We want to find this point...
 V1 = 6 V
 I1R = 1 A
... and this point !
Non operating zone
Operating zone
Next tests serve to find some point of the characteristic curve.
Note that it is also possible to test the relay with some no-trip
test inside the non operating zone, and some trip test in the
operating zone.
1.5.2. Connection of the relay
The following is the connection schematic.