GE T60 Instruction Manual page 466

5.9 TRANSDUCER INPUTS AND OUTPUTS
• If the
RRTD 1 APPLICATION
An RRTD actual value of –43°C implies that the
setting is
CATION
If the RRTD communication link with the T60 is broken, then the last temperature actual values are retained until the RRTD
communication failure is detected. When this occurs, a RRTD COMM FAILURE self-test alarm and target message is gen-
erated, and an event is logged in the event recorder and the temperature actual values reset to 0. When the link is re-estab-
lished, the
5 RRTD 1 APPLICATION
• RRTD 1 FUNCTION: This setting enables and disables the remote RTD. If set to "Disabled", no actual value is created
for the remote RTD.
• RRTD 1 ID: This setting is used to assign alphanumeric ID is assigned to the remote RTD. This ID will be included in
the remote RTD actual values. It is also used to reference the remote RTD input to features using the remote RTD.
RRTD 1 TYPE: This setting specifies the remote RTD type. Four different RTD types are available: 100  Nickel, 10 
•
Copper, 100  Platinum, and 120  Nickel.
The RRTD converts resistance to temperature as per the values in the following table. The T60 reads the RTD temper-
atures from the RRTD once every five seconds and applies protection accordingly. The RRTDs can be used to provide
RTD bias in the existing thermal model.
Table 5–38: RTD TEMPERATURE VS. RESISTANCE
TEMPERATURE
°C
–40
–30
–20
–10
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
An RRTD open condition is detected when actual RRTD resistance is greater than 1000 ohms and RRTD open is dis-
played as "250°C" in the T60.
5-332
setting is "Group 1" or "Group 2", then a value of "Other" is written to the RRTD device.
None .
" "
and
RRTD 1 TYPE
RESISTANCE (IN OHMS)
°F 100 OHM PT
(DIN 43760)
–40 84.27
–22 88.22
–4 92.16
14 96.09
32 100
50 103.9
68 107.79
86 111.67
104 115.54
122 119.39
140 123.24
158 127.07
176 130.89
194 134.7
212 138.5
230 142.29
248 146.06
266 149.82
284 153.58
302 157.32
320 161.04
338 164.76
356 168.47
374 172.46
392 175.84
T60 Transformer Protection System
setting is "Enabled" but the corresponding
RRTD 1 FUNCTION
settings are read from the RRTD to re-synchronize the device.
120 OHM NI 100 OHM NI 10 OHM CU
92.76 79.13 7.49
99.41 84.15 7.88
106.15 89.23 8.26
113 94.58 8.65
120 100 9.04
127.17 105.6 9.42
134.52 111.2 9.81
142.06 117.1 10.19
149.79 123 10.58
157.74 129.1 10.97
165.9 135.3 11.35
174.25 141.7 11.74
182.84 148.3 12.12
191.64 154.9 12.51
200.64 161.8 12.9
209.85 168.8 13.28
219.29 176 13.67
228.96 183.3 14.06
238.85 190.9 14.44
248.95 198.7 14.83
259.3 206.6 15.22
269.91 214.8 15.61
280.77 223.2 16
291.96 231.6 16.39
303.46 240 16.78
5 SETTINGS
RRTD 1 APPLI-
GE Multilin