Vanguard Instruments MCCB-250, Руководство пользователя

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MCCB-250 USER’S MANUAL REV 2
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Table 2. Functional Descriptions of MCCB-250 Controls and Indicators
Item
Number Panel Markings
Functional Description
1
COM Current source common terminal.
2
250A 250A current source terminal.
3
120A 120A current source terminal.
4
25A 25A current source terminal.
5
5A 5A current source terminal
6 RS-232C
RS-232C (serial) interface port for factory firmware programming and
diagnostics.
7
90-120 Vac
50-60 Hz, 20A
or
200-240 Vac
50-60 Hz, 20A
Input power connector.
8 None Circuit Breaker/Power Switch.
9 GROUND
MCCB-250 ground stud. Connect ground stud to substation ground using
provided cable.
10
CURRENT
CONTROL
Current control knob.
11
HIGH
CURRENT
PRESENT
High current presence indicator LED.
12 None
Back-lit LCD screen (20 characters by 4 lines), viewable in bright sunlight and
low-light levels.
13
Up and Down
Arrows
The up and down arrows are used to control the current source output and
timer. Three modes are available:
ON+TMR : Turn on current source and timer
OFF: Turn off current source and timer
MONT: Turn on current source momentarily
14 CONTRAST LCD screen contrast control.
15 & 16
EXT CURRENT
(0-10A)
External current input connectors.
17
DRY CONTACT
WET CONTACT
CURRENT
Timer and current source stop input selection with LED indicator.
18 & 19 TIMER STOP Timer “STOP” input connectors.