10 Fault elimination
Maschinenfabrik Reinhausen GmbH 2020358 6385142/08 ENETOS
®
ED
Characteristics/details Cause Remedy
Sensor for top-oil temperature
defective
▪ Event No. 1845
Sensor defective Replace sensor
OLTC oil temperature limit value
Single-column application:
▪ Event No. 1106, 1107, 1108,
or 1109
Multi-column application:
▪ Event No. 1395, 1396, 1397 or
1398 (column A)
▪ Event No. 1332, 1334, 1336,
or 1338 (column B)
▪ Event No. 1333, 1335, 1337,
or 1339 (column C)
On-load tap-changer oil tempera-
ture is greater than the > limit
value.
Check the measured value for plausibility.
This event will be reset automatically once the
measured value is lower than the limit value
again.
On-load tap-changer oil tempera-
ture is greater than the >> limit
value.
On-load tap-changer oil tempera-
ture is less than the < limit value.
Check the measured value for plausibility.
This event will be reset automatically once the
measured value is greater than the limit value
again.
On-load tap-changer oil tempera-
ture is less than the << limit value.
Configuration error Check the configuration of the analog input
[►Section 9.29, Page 292].
Check the limit value setting.
Wiring error Check wiring as per connection diagram.
Single-column application:
▪ Sensor CT387, terminal X6.1:13-16
Multi-column application:
▪ Column A: Sensor CT387, terminal
X6.1:13-16
▪ Column B: Sensor CT388, terminal X6.2:1-4
▪ Column C: Sensor CT389, terminal X6.2:5-8
Sensor defective Replace sensor
OLTC oil temperature invalid
Single-column application:
▪ Event No. 1121
Multi-column application:
▪ Event No. 1399 (column A)
▪ Event No. 1326 (column B)
▪ Event No. 1327 (column C)
Configuration error Check the configuration of the analog input
[►Section 9.29, Page 292].
Check the limit value setting.
Wiring error Check wiring as per connection diagram.
Single-column application:
▪ Sensor CT387, terminal X6.1:13-16
Multi-column application:
▪ Column A: Sensor CT387, terminal
X6.1:13-16
▪ Column B: Sensor CT388, terminal X6.2:1-4
▪ Column C: Sensor CT389, terminal X6.2:5-8
Sensor defective Replace sensor
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