ABB TD-5 Instruction Leaflet page 8

41-579.11B
24 32
VOLTS DC VOLTS DC
0
500 mA 450 mA
# = 100 mA for time delay ranges 0.05 - 0.4 and 0.05 - 1.0 seconds,
115 mA for time delay ranges 0.2 - 4.0 and 1.5 - 30 seconds.
Note: For TD-5 with TX Relay, there is an extra operating drain of 15 mA at 48, 125 and 250 VDC.
3.4 ACCURACY
The accuracy of the time delay depends upon the
repetition rate of consecutive timings, the supply voltage,
and the ambient temperature. Self-heating has a
negligible effect on the time accuracy.
3.4.1 Nominal Setting
The first time delay, as measured with the test circuit
shown in Figure 4, taken at 25° C and rated voltage,
will be within four milliseconds of its setting for settings
of 0.2 seconds or less. For settings above 0.2 seconds,
this accuracy will be ±2%.
3.4.2 Consecutive Timings
Incomplete capacitor discharge will cause changes in
time delay. These changes are a function of discharge
rate. Timing accuracy is shown per Tables 1 and 2.
TABLE 1
Timing accuracy for slow repetitions
RELAY RANGE
TIME DELAY BETWEEN
(SECONDS) READINGS
0.05 - 0.4
AT LEAST 3
0.05 - 1.0 SECONDS
AT LEAST 5
0.2 - 4.0
SECONDS
AT LEAST 5
1.5 - 30
SECONDS
8
BATTERY DRAIN
48
VOLTS DC
0 0
240 mA
DELAY ACCURACY
AS PERCENT
OF SETTING
+2%
+2%
+2%
Type TD-5 Class 1E Time Delay Relay
125 250
VOLTS DC
VOLTSDC
0 0
#
200 mA
Timing accuracy for fast repetitions
RELAY RANGE
TIME DELAY
(SECONDS)
0.05 - 0.4
INSTANTANEOUS
0.05 - 1.0
0.2 - 4.0 INSTANTANEOUS
1.5 - 30 A
3.4.3 Supply Voltage
Changes in supply voltage, between 80% and 110% of
nominal, cause time delay variations of no more than
±3 milliseconds for settings of 0.3 seconds or less,
and no more than ±1% for settings above 0.3 seconds.
3.4.4 Ambient Temperature
Changes in ambient temperature cause changes in time
delay. This variation in time delay is a direct function of
capacitance change with temperature. Typical variations
of time delay with temperature are shown in Fig. 3.
TABLE 2
DELAY ACCURACY
BETWEEN AS PERCENT
READINGS OF SETTING
+4%
+4%
. 0.5 . +4%
PPROX SEC