InteliATS
NT
PWR, SW version 2.5, ©ComAp
– May 2015
109
IA-NT- PWR-2.5-Reference Guide.pdf
Mains and generator
Nominal frequency
50
–60Hz
Frequency measurement tolerance
0.2Hz
Current inputs
Nominal input current (from CT)
5 A
Load (CT output impedance)
< 0.1
CT input burden
< 0.2 VA per phase (In=5A)
Max. measured current from CT
10 A
Current measurement tolerance
2 % from the Nominal current
Max. peak current from CT
50 A / 1s
Max. continuous current
10 A
Voltage inputs
Measuring voltage range
0
– 277 VAC phase to neutral
0
– 480 VAC phase to phase
Maximal measured voltage
340 VAC phase to neutral
600 VAC phase to phase
Input resistance
0.6 M
phase to phase
0.3 M
phase to neutral
Voltage measurement tolerance
2 % from the Nominal voltage
Overvoltage class
III / 2 (EN61010)
Impulse voltage (Uimp)
4 kV
Binary inputs and outputs
Binary inputs
Not electrically separated
Number of inputs
7
Input resistance
4.2 k
Input range
0-36 VDC
Switching voltage level for close contact indication
0
–2 V
Max voltage level for open contact indication
8
–36 V
Binary open collector outputs
Not electrically separated
Number of outputs
7
Maximum current
0.5 A
Maximum switching voltage
36 VDC
IL-NT RS232 interface (optional card)
Plugs into IA-NT controller COMMUNICATION MODULE port.
Maximal distance
10m
Maximum speed
Up to 57.6 kBd (DIRECT), 38.4kBd Analog
modem, 9.6 kBd digital modem, 57.6 kBd
(MODBUS)
Recommend external converter:
ADVANTECH
– ADAM 4520: RS232 to RS422/485 converter, DIN rail, automatic RS485 bus
supervision, no external data flow control signals, galvanic isolated.
Recommended internal converter:
ADVANTECH
– PCL-745B or PCL745S: Dual port RS422/485 Interface card, automatic RS485 bus
supervision, no external data flow control signals, galvanic isolated
