Wiring Testing For Turbine

Wiring Testing Objective: The following testing will be performed on the system to check for operation of different components including cables, yaw shaft control box, dogvane and anemometer to be able to troubleshoot the “commerr” fault displayed on the inverter.

3 4

2

2 4 3

1

1

Cross‐section view of the data cables

1

2 Dogvane

Power Cable

4Core Data Cable

PC Connector

1

3

2

3

Anemometer

Wiring Testing

Cross‐section 1 PIN to Pin Testing 1—2 1—3 2—3 2—4 3—4

Expected Result in Normal Operation Mode Terminated Mode 0Ω About 60kΩ About 60kΩ About 60kΩ 0Ω

Non‐Terminated Mode 0Ω infinite infinite infinite 0Ω

Table 1‐ Checking of the cable and plugs when the top end of the cable plugged to the control box

MUTLTIMETER SETTING ‐‐ _____________________________________________________________________________________

Cross‐section 2 PIN to Pin Testing 1—2 1—3 2—3 2—4 3—4

Expected Result in Normal Operation Mode Terminated Mode Approx 100k Ω, 240VDC infinite infinite infinite 700 Ω, DC 0.7V

Non‐Terminated Mode infinite infinite infinite infinite infinite

Table2‐Checking of the cable and plugs when the low end of the cable connected to the inverter

If “ commerr” seen on LCD Display measure 1‐2 PIN to PIN TEST for DC240V. If no DC240v, the replace fuse. If there is DC 240V, then the problem with the control box on yaw shaft, please change a new yaw shaft control system.

MUTLTIMETER SETTING ‐‐ _____________________________________________________________________________________

Anemometer

dogvane

Cross‐section 3 PIN to Pin Testing 1—2 1—3 2—3 1—2

Expected Result in Normal Operation Mode Terminated Mode 400 Ω 4.3k Ω 5k Ω 380 Ω

Non‐Terminated Mode infinite infinite infinite infinite

1—3

4.7k Ω

infinite

2—3

5k Ω

infinite

Table3‐Checking for cable and plugs when measurement cables are connected to the yaw shaft control box

MUTLTIMETER SETTING ‐‐ _____________________________________________________________________________________

Wiring Testing

Anemometer

dogvane

Cross‐section 4 PIN to Pin Testing 1—2 1—3 2—3 1—2

Expected Result in Normal Operation Mode Terminated Mode 8M Ω 11M Ω 13M Ω infinte

Non‐Terminated Mode infinte infinte infinte infinte

1—3

infinte

infinte

2—3

30M Ω

infinte

Table4‐Checking for cable and measurement probes (Dogvane and Anemometer) when cables are connected to these probes

MUTLTIMETER SETTING ‐‐ _____________________________________________________________________________________

Turbine OFF

Turbine ON

Power Cable Testing Pin Connection 1—3 1—4 2—3 2—4 1—3 1—4 2—3 2—4

Voltage Null Null Null Null Null Null Null Null

Resistance 0Ω 0Ω 0Ω 0Ω Null Null Null Null

Table5‐Checking for the continuity and inside jumper connections of the main power cable

MUTLTIMETER SETTING ‐‐ _____________________________________________________________________________________