DECS-200 Digital Excitation Control System
5
Off-Line
High Current Level
(instantaneous) set point adjustable from 0 to 30Adc in 0.1Adc increments.
Limiting occurs for a time period ranging from 0 to 10 seconds, settable in 1 second increments.
Low Current Level
set point adjustable from 0 to 15Adc in 0.1Adc increments. Limiting occurs in-
definitely.
TAKEOVER TYPE OEL:
The Takeover OEL uses an I
2
t characteristic.
On-Line
High Level:
High Current Level
(instantaneous) set point is adjustable from 0 to 30.0Adc in 0.1
Adc increments.
Low Level:
Low Current set point is adjustable from 0 to 15.0Adc in 0.1Adc increments. Limint
occurs indefinitely.
Time Dial
- This setting determines the inverse time curve selected.
Off-Line
High Level -
High current level (instantaneous) set point is adjustable from 0 to 30.0Adc in
0.1Adc increments.
Low Level
- Low current set point is adjustable from 0 to 15.0Adc in 0.1Adc increments. Limiting
occurs indefinitely.
Time Dial
- This setting determines the inverse time curve selected.
UNDEREXCITATION LIMITING
Adjustments based on generator ratings.
STATOR CURRENT LIMITING
High Level
- High current level set point adjustable from 0 to 60,000Aac in 0.1Aac increments.
Limiting occurs for a time period ranging from 0 to 60 seconds, settable in 0.1 sec. increments.
Low Level
- Low current level set point adjustable from 0 to 60,000Aac in 0.1Aac increments.
Limiting occurs indefinitely.
SEQUENCE OF EVENT RECORDING (SER)
127 event reports stored in volatile memory (retrievable via
BESTCOMS). SER triggered by: Input/Output status changes, system operating status changes, and alarm annun-
ciations.
OSCILLOGRAPHY
Stores 8 records. Up to 6 variables can be logged in a record. Sampling rate: 600 data points
per log, pre-trigger adjustable from 0 to 599 data points, 4ms to 10sec intervals between data points (2.4sec to
6000sec. total log duration)
MANUAL EXCITATION CONTROL
Regulates field current from 0 to 15.0A in increments of 0.1Adc.
VOLTAGE MATCHING
Matches utility bus RMS voltage with generator output RMS voltage within ±0.15% of
the generator voltage
REAL TIME CLOCK
Time displayed in either 12 hour or 24 hour format and can be selected to allow for daylight
savings timer. The date is selectable for two formats: d-m-y or m/d/y. Requires control power to operate. If power is
lost, the clock will need to be reset.
SURGE WITHSTAND CAPABILITY (SWC)
IEEE C37.90.1-1989
FAST TRANSIENT
IEEE C37.90.1-1989
HIGH POT.
IEEE 421.3
ENVIRONMENTAL
Operating temperature
: -40°C to +60°C (-40°F to +140°F)
Storage temperature:
-40°C to +85°C (-40°F to +185°F)
Salt Fog
Per MIL-STD-810E, Method 509.3 (100 hrs. of salt fog, 100 hours of drying time)
Shock
15 Gs in each of three mutually perpendicular planes
Vibration
5-26Hz: 1.2Gs; 27-52Hz: 0.914mm (.036 inch) double amplitude; 53-500Hz: 5.0Gs
Size
8.08" (205mm) wide x 6.76" (171mm) deep x 12.0" (304mm) high
Weight
14 lbs. (6.35kg)
AGENCY
UL recognized per Std. 508; UL file number E97035; CSA certified per Std. CAN/CSA-C22.2,
Number 14, CSA file number LR23131; CE compliant, EMC and LVD; Certified per DNV Standard 2.4; GOST-R
certified per the relevant standards of Gosstandart of Russia; Byelorussian certified.
SPECIFICATIONS, continued