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5 SETTINGS
•
If the
RRTD 1 APPLICATION
An RRTD actual value of –43°C implies that the
setting is
None
.
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
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 Ω Nickel, 10 Ω
•
Copper, 100 Ω Platinum, and 120 Ω 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 5–29: RTD TEMPERATURE VS. RESISTANCE
TEMPERATURE
°C
°F
–40
–40
–30
–22
–20
–4
–10
14
0
32
10
50
20
68
30
86
40
104
50
122
60
140
70
158
80
176
90
194
100
212
110
230
120
248
130
266
140
284
150
302
160
320
170
338
180
356
190
374
200
392
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.
GE Multilin
setting is "Group 1" or "Group 2", then a value of "Other" is written to the RRTD device.
RRTD 1 FUNCTION
and
settings are read from the RRTD to re-synchronize the device.
RRTD 1 TYPE
RESISTANCE (IN OHMS)
100 OHM PT
120 OHM NI
(DIN 43760)
84.27
92.76
88.22
99.41
92.16
106.15
96.09
113
100
120
103.9
127.17
107.79
134.52
111.67
142.06
115.54
149.79
119.39
157.74
123.24
165.9
127.07
174.25
130.89
182.84
134.7
191.64
138.5
200.64
142.29
209.85
146.06
219.29
149.82
228.96
153.58
238.85
157.32
248.95
161.04
259.3
164.76
269.91
168.47
280.77
172.46
291.96
175.84
303.46
T60 Transformer Protection System
5.9 TRANSDUCER INPUTS AND OUTPUTS
setting is "Enabled" but the corresponding
100 OHM NI
10 OHM CU
79.13
7.49
84.15
7.88
89.23
8.26
94.58
8.65
100
9.04
105.6
9.42
111.2
9.81
117.1
10.19
123
10.58
129.1
10.97
135.3
11.35
141.7
11.74
148.3
12.12
154.9
12.51
161.8
12.9
168.8
13.28
176
13.67
183.3
14.06
190.9
14.44
198.7
14.83
206.6
15.22
214.8
15.61
223.2
16
231.6
16.39
240
16.78
RRTD 1 APPLI-
5
5-287
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