Table of Contents
Advertisement
CHAPTER 1: INTRODUCTION
User interface specifications
Metering and monitoring specifications
Inputs specifications
MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL
CALCULATION METHOD
( [I
- I
] / I
) x 100%
M
AV
AV
Where:
I
= average phase current
AV
I
= current in a phase with maximum deviation from I
M
THD ALARM (CURRENT/VOLTAGE)
Pickup level: ...........................................................0.1% to 100.0% in steps of 0.1% (programmable)
Time delay:.............................................................0 to 65535 seconds in steps of 1
OVERCURRENT (PER PHASE/NEUTRAL)
Pickup level: ...........................................................0.01 to 2.00 × Nominal Current in steps of 0.01%
Time delay:.............................................................0 to 65535 seconds in steps of 1
GRAPHICAL CONTROL PANEL
Size: ...........................................................................height 102mm, width 153mm, depth 35mm
LCD: ...........................................................................89 mm (3.5-inch) colour, 320 by 240 pixels
LED indicators: .....................................................7 LEDs
Pushbuttons: .........................................................Alarm Reset, Test, Ctrl, Info, plus 11 LCD screen display
Ports:.........................................................................USB 2.0 type Mini-B for laptop computer connection
EVENT RECORDER
Capacity: .................................................................256 events
Data storage:........................................................non-volatile memory
FREQUENCY METERING
Range: ......................................................................40.00 to 70.00 Hz in steps of 0.01
Accuracy: ................................................................±0.05 Hz
POWER METERING
Real power range: ..............................................–2000.0 to 2000.0 kW in steps of 0.1
Apparent power range:....................................0.0 to 2500.0 kVA in steps of 0.1
Accuracy: ................................................................±2.0% of full scale with 5 A CT
POWER FACTOR METERING
Range: ......................................................................–0.99 to +0.99 in steps of 0.01
Accuracy: ................................................................±0.05
CONTROL VOLTAGE INPUT
Input range: ...........................................................60 V to 300 V AC
Nominal frequency: ...........................................50 or 60 Hz
DIGITAL INPUTS
Nominal input voltage:.....................................24 V DC
Recognition time: ................................................2 cycles
Continuous current draw:...............................4 mA
Type:..........................................................................opto-isolated inputs
External switch: ...................................................wet contact
AV
(programmable)
control keys
SPECIFICATIONS
1–7
Advertisement
Table of Contents
