Manual 37138C
ESDR 4T - Current Differential Protection Relay
Page 38/46
© Woodward
Appendix B.
Technical Data
Measurements,
Currents ---------------------------------------------------------------------------isolated
-
Measured currents (Nominal value I
N
).............................................. [1] ../1 A, or [5] ../5 A
-
Measuring frequency ................................................................................... 40.0 to 70.0 Hz
-
Accuracy ................................................................................................................... Class 1
-
Linear measuring range.............................................................................................5.0 × I
N
-
Max. power consumption per path....................................................................... < 0.15 VA
-
Rated short time current (1 s)................................................[1] 100.0 × I
N
, or [5] 30.0 × I
N
Ambient
conditions --------------------------------------------------------------------------------------------
-
Voltage supply ..........................................................................................24 Vdc (+/-25 %)
-
Intrinsic consumption............................................................................................ max. 6 W
-
Ambient temperature
Storage ............................................ -40 to 85 °C / -40 to 185 °F
Operational ...................................... -20 to 70 °C / -4 to 158 °F
-
Ambient humidity ............................................................................. 95 %, non-condensing
-
Maximum altitude ..................................................................................................... 2000 m
-
Degree of pollution ............................................................................................................. 2
Digital inputs ----------------------------------------------------------------------------------------------------------isolated
-
Input range (VCont, digital input).................................. Nominal voltage 18 to 250 Vac/dc
-
Input resistance .............................................................................................. approx. 68 k
Ω
Relay
outputs ----------------------------------------------------------------------------------------- isolated
-
Contact material ........................................................................................................AgCdO
-
Resistive load (GP) (V
Cont, relay output
)
AC ..........................................................................2.00 Aac@250 Vac
DC ....... 2.00 Adc@24 Vdc, 0.36 Adc@125 Vdc, 0.18 Adc@250 Vdc
-
Inductive load (PD) (V
Cont, relay output
)
AC .................................................................................................B300
DC 1.00 Adc@24 Vdc, 0.22 Adc@125 Vdc, 0.10 Adc@250 Vdc
Protective
functions -------------------------------------------------------------------------------------------
-
Operating time................................................................................................... min. 100 ms
-
Differential current................................................................................................min. 10 %
Housing ----------------------------------------------------------------------------------------------------------
-
Type ........................................................................................... APRANORM DIN 43 700
-
Dimensions (W × H × D)...................................................................... 144 × 72 × 199 mm
-
Front panel cutout (W × H)........................................................ 138 [+1.0] × 68 [+0.7] mm
-
Terminals ............................ Screw terminals depending on connector 2.5 mm² or 4.0 mm²
-
Recommended tightening torque ............................. [2.5 mm²] 0.5 Nm / [4.0 mm²] 0.6 Nm
use 60/75 °C copper wire only
use Class 1 wire only (or equivalent)
-
Weight........................................................................................................Approx.. 1,000 g
Housing
Protection --------------------------------------------------------------------------------------------
-
Protection system .....................................................IP42 from front with correct mounting
IP54 from front with gasket (gasket: P/N 8923-1037)
IP21 from rear
-
Front folio .................................................................................................Insulating surface
-
EMV-Test (CE).............................................. tested according to applicable EN guidelines
-
Listings........................................................... CE-Mark; UL-Listing for ordinary locations
-
Type Listing ............................... UL-/cUL-Listed, Ordinary Locations, File No.: E231544
-
Marine Certification .........................................................................................................GL
