The digital indicator - DI is an electronic microprocessed equipment for remote supervision of distinct transformer's and power reactor's variables. It is possible to measure up to 8 variables. For example, a DI can indicate different variables of one only transformer: the insulating oil's temperature and also the temperatures of 3 windings, oil's moisture, oil's water content. Otherwise, it can also indicate temperatures of phases A, B, C and spare of a single-phase bank of transformers.
The 8 indications are differentially signed by LEDs disposed in DI's frontal panel.
The input variables are individually configured by the user through the insertion of the scale measurement limits. The alarm limit for each variable is programmable in two levels. In the case of one monitored variable exceeds its limit, the correspondent LED starts to blink and a relay can be configured to inform the alarm to a remote system.
Parameterization:
For the proper operation of the equipment, some parameters must be configured. Below are the main points to be checked:
- Configuration of inputs:
Menu: | Parameter: | Description: | Range values: | |
CONF | NIPT | Number of inputs | 1 to 8 | |
NIPT | (1 to 8 or ALL) | ANIR | Analog input range | 0 to 8 |
EDSC | Input's end scale | |||
BGSC | Input's begin scale | |||
DEC | Decimal places | |||
- Alarms:
Menu: | Parameter: | Description: | Range values: | |
ADVN | ALRM | ALM1 | Alarm 1 value (Relay 1) | |
ALM2 | Alarm 2 value (Relay 2) | |||
- Serial communication:
Menu: | Parameter: | Description: | Range values: | |
ADVN | CONF | CMMN | Common terminal | Positive or Negative |
ANOV | Analog output variable | 1, 2, 3, 4, 5, 6, 7, 8, Min or Max Value. | ||
ANOR | Analog output range | 0 to 8 | ||
ADDR | Address | 1 to 31 | ||
BDR | Baud Rate | 9600, 19200 or 38400 | ||
| PROT | Protocol (optional nº1) | MDB or DNP | ||
If you have any problems or difficulties with the procedure, please do not hesitate to contact us!
Contacts:
Telephone: +55 (11) 2410 – 1190 — Ext. 425
Cellular: +55 (11) 97225 – 8683 - WhatsApp
E-mail: sac@treetech.com.br
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