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IB140012EN
For more information visit: www.eaton.com
Instructional Booklet
Effective: March 2021
Page
9
Operation and Maintenance Manual,
Automatic Transfer Switch Controller, ATC-900
Table 1. Current, Voltage, Frequency, Metering Data.
Table 2. Power Metering Data.
Voltage Inputs (Measurement Category)
•
Range: Universal, Auto-ranging up to 416 Vac L-N, 721 Vac
L-L
•
Supported hookups: 3 Element Wye, or Delta
•
Input Impedance: 2 MOhm/Phase
•
Burden: 0.0072 VA/Phase at 120 Volts
•
Fault Withstand: Meets IEEE C37.90.1
Current Inputs
•
5 A Nominal, 5 A Maximum
•
Burden: 0.0115 VA per Phase max at 5A
•
Pickup Current: 0.1% of Nominal
•
Connections: Screw Terminal
•
Fault Withstand: 100 A/10 sec., 300 A/3 sec., 500 A/1 sec.
Isolation
•
All inputs are isolated to 2600 Vac
Measurement Methods
•
Voltage, Current: True RMS
•
Power: Sampling at 64 Samples per Cycle on All Channels Mea-
sured Readings Simultaneously
•
A/D Conversion: 16 simultaneous 12 bit Analog-to-Digital Con-
verters
Mechanical Parameters
•
Depth: 1.58"
•
Total depth including controller is 2.60" + 1.58" = 4.18 C
Total
Figure 3. DCT Module attached.
Compliance
•
UL Listing: E38116, Vol.3, Sec. 18
•
ULT 991 Effects of shipping and storage test
•
Thermal cycling test
•
Humidity test
•
UL 1008 Dielectric test
•
FCC Part 15 Conducted/radiated emissions (Class A)
•
CISPR 11 Conducted/radiated emissions (Class A)
•
IEC 61000-4-2 Electrostatic discharge test
•
IEC 61000-4-3 Radiated susceptibility tests
•
IEC 61000-4-4 Fast transient tests
•
IEC 61000-4-5 Surge withstand tests
•
IEC 61000-4-6 Conducted immunity tests
•
IEC 61000-4-8 Conducted magnetic fields
•
IEC 61000-4-11 Voltage dips and interruptions
•
IEC 61000-3-2 Harmonics
•
IEC 61000-3-3 Voltage flicker/fluctuation
•
Seismic IBC/CBC certified
•
CSA conformance C22.2 No. 178-1978 (reaffirmed 1992)
CURRENT METERING
UNITS
ACCURACY
NOTES
lA, lB, IC,
Amperes ±1% of
Reading
Accuracy applicable for 5 to 100% of I,
and current will start metering at 2%
CURRENT METERING
RANGE
NOTES
Current Unbalance
--
0-100%
VOLTAGE METERING
UNITS
ACCURACY
NOTES
VAB, VBC, VCA
Volts
±1% of
Reading
Applicable to Volt range of 34 to721 Vac
FREQUENCY
METERING
UNITS
ACCURACY
NOTES
Frequency
Hz
±0.2 Hz of
Reading
Applicable to Volt range of 34 to 721 Vac
POWER METERING
UNITS
ACCURACY
NOTES
Active
kW
±1.5% of Reading
Approximately 1-second update
Apparent
kVA
±1.5% of Reading
Approximately 1-second update
Reactive
kvar
±1.5% of Reading
Approximately 1-second update
PF (power factor)
---
0-±1.00
DCT Part#
70C1778G01