Table 4.0 – Vanguard Tri-Phase User Manual

Page 17

TRI-PHASE OPERATING™ INSTRUCTIONS

7.1

TRI-PHASE™ Operating Controls, Indicators and Connectors (continued)

Table 4.0

Model TRI-PHASE™ Front-Panel Controls, Indicators, and Connectors

Fig. 2.0 Index

Panel Markings

Functional Description

USB

USB interface port to PC

EMERGENCY

TURN OFF

“PUSH”

Emergency turn off test voltage switch

H voltage test connector

LTC

CONTROLER

Load Tap Changer controller connector

X voltage test connector

USB DRIVE

USB FLASH memory thumb drive interface port

None (wing nut)

Ground stud connected to substation ground

120-240Vac, 2 A,

50/ 60Hz

Fuse: 250Vac, 5 A,

Fast Blow

Input power connector and fused power switch
with third-wire safety ground

None (printer)

Thermal printer, 4.5-inch wide printout

CHANGE

“PUSH”

TO SELECT

Control Knob: Turning this Control Knob
scrolls through different menu options (shown
on LCD). Select the displayed menu option by
pushing the knob.

None (keypad)

pushbutton operating controls, 16-keys

LTC CONTROL

Load Tap Changer Control push button switches

None (LCD display)

LCD display 64 by 128 dot graphic, back-
lighted, sunlight readable display

TEST IN PROGRESS

This red LED flashes in response to a command
or when a test voltage is applied to the test
transformer. The red LED flashes with a
corresponding beeping sound at a 1 second rate
during test.

RS-232C

RS-232C connector for interface to an IBM
compatible computer. A 9-pin, female DB type
connector. Data rate is set to 115,000 baud, 1
start bit, 8 data bits, 2 stop bits, and no parity bit.
Connector pin functions are:
PIN

SIGNAL

Gnd