This Planning Guide will provide information on the installation requirements of the EcoStruxure Transformer Sensor as well as gather the information Schneider Electric needs to progress with your order.
EcoStruxure Transformer Sensor Planning Guide
Step 1 Notify Site Management
Liaise with site management and design to determine if there are any special requirements on site.
Step 2 Plan a Safe Work Site
Ensure any planned work complies with all relevant site management procedures.
Step 3 Confirm the Point of EcoStruxure Transformer Sensor Insertion
Verify that there is a suitable access port for the installation of the EcoStruxure Transformer Sensor. Any position should be verified with the supervising engineer, who can communicate with Schneider Electric on the suitability of the position, if necessary. Probe position, probe diameter, and clearance should all be taken into consideration.
3.1 Probe Position:
There are advantages and disadvantages to each position shown below, so the choice of the best position for each transformer should be based on its specific physical characteristics.
3.2 Probe Diameter
Ensure the valve will accommodate the 14 mm diameter of the sensor probe.
Ensure there is 600 mm clearance for insertion of the EcoStruxure Transformer Sensor into the transformer valve pipe.
Once installed there should also be 50mm clearance around the EcoStruxure Transformer Sensor for heat dissipation as well as an additional 60mm in an arc to allow fastening to the transformer valve pipe and for the low voltage power and external temperature sensor cables.
Step 4 Determine Sensor Length
Determine the size and thread type of the insertion point. Schneider Electric provides a standard, 3⁄4” male BSPP/NPT to 1⁄2” female BSPP/NPT connector to interface with the EcoStruxure Transformer Sensor. See the connection drawings below. The connector has two internal O-rings to ensure there is no oil leakage and a bleed valve to prevent the ingress of air into the transformer tank.
The figures below show the most common transformer valve configurations.
Additional hardware may be required to interface the insertion point with the 3⁄4” male BSPP/NPT thread of the connector (See number 2 in the figures below).
Flange before valve:
Flange after valve:
Length of Pipe
Record the approximate length of the pipe (distance, d, in the figures above) leading to the main tank in the box provided. This information will be used to determine the length of the probe, ensure that the probe will enter the flow but not impinge on the internal windings.
Select appropriate sensor length
- Short sensor - Pipe length (d) is 170 to 210mm
- Medium sensor - Pipe length (d) is 255 to 295mm
- Long sensor - Pipe length (d) is 340 to 380mm
If the pipe length (d) is not within the above ranges, select the longer sensor and pad out the length using male to female spacers.
Step 5 Confirm On-site 3G/4G Coverage/Signal Strength
The EcoStruxure Transformer Sensor reports its collected data back to a secure server over the 3G/4G mobile data network. Good 3G/4G signal strength is therefore vital to its successful operation.
Desktop verification of communications should be completed using online Network coverage maps.
Step 6 Low Voltage Power Supply
The EcoStruxure Transformer Sensor operates at 24 - 48VDC, however, it is provided standard with a 110/240 VAC to 24 VDC, DIN rail mount power adapter.
A suitable power source will need to be identified for the installation of this device. Schneider Electric will provide 10m low voltage cabling, with a pre-installed 5-pin M12 connector, for connection to the logger. Please ensure that the LV cable meets internal standards.
Step 7 Add Drawings (if required)
Please send any additional drawings required for clarification of any of the above responses to firstname.lastname@example.org.
Step 8 Place Your Order
Specify the sensor length, thread type (BSPP or NPT), country where the sensors are to be installed and send relevant drawings to Schneider Electric for provisioning purposes to:
Once planning is completed, visit the EcoStruxure Transformer Sensor Installation Guide for steps on installing the EcoStruxure Transformer Sensor.
A video tutorial stepping through completion of the planning guide is available below:
To understand what is required for the installation of the sensor, please watch the EcoStruxure Transformer Sensor Installation Guide Step by Step video below: