Inaccuracy:
- Definite time (Z
M
/Z
SET
ratio <0.95)
±1.0 % or ±25 ms
Instant operation time
Start time and instant operation time (trip):
- Z
M
/Z
SET
ratio <0.95
<45 ms
Reset
Reset ratio
103 %Z
SET
Reset time setting
Inaccuracy: Reset time
0.010…150.000 s, step 0.005 s
±1.0 % or ±25 ms
Instant reset time and start-up reset
<45 ms
No
Notte!
e!
• Impedance c
Impedance calcula
alculation
tion: Voltage measurement starts from 0.5 V and current measurement
from 50 mA. In case either or both are missing, the impedance measurement is forced to
infinite.
• Ang
Angle memory
le memory: During three-phase short-circuits the angle memory is active for 0.5 seconds
in case the voltage drops below the squelch limit (0.5 V). During this 0.5 s time the
impedance is calculated based on the 1.0 V secondary voltage value and voltage angles
before the fault.
9.2.1.13 Resistance temperature detectors
Table. 9.2.1.13 - 281. Technical data of the resistance temperature detectors.
Inputs
Resistance input magnitudes
Measured temperatures measured by RTD sensors
Alarm channels
12 individual alarm channels
Settable alarms
24 alarms available (two per each alarm channel)
Pick-up
Alarm setting range
Inaccuracy
Reset ratio
101.00…2000.00 deg, setting step 0.1 deg (either < or > setting)
±3 % of the set pick-up value
97 % of the pick-up setting
Operation
Operating time
Typically <500 ms
9.2.1.14 Volts-per-hertz overexcitation protection (V/Hz>; 24)
Table. 9.2.1.14 - 282. Technical data for the volts-per-hertz overexcitation protection function.
Measurement inputs
Voltage input
U
L1
, U
L2
, U
L3
U
L12
, U
L23
, U
L31
Voltage input magnitude
Maximum line-to-line voltage
Frequency reference 1
Frequency reference 2
Frequency reference 3
CT1IL1, CT2IL1, VT1U1, VT2U1
CT1IL2, CT2IL2, VT1U2, VT2U2
CT1IL3, CT2IL3, VT1U3, VT2U3
Pick-up
Pick-up setting
0.01…75.00 %, setting step 0.01 %
A
AQ
Q-T215
-T215
Instruction manual
Version: 2.04
399
