Basler Electric BE3-76SH - Manual

www.basler.com
+1 618.654.2341 (USA)
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Model BE3-76SH
INTRODUCTION
The BE3-76SH dc overcurrent relay provides overcurrent
protection in dc circuits found in applications such as the
excitation field of a synchronous machine, transit systems,
and dc substation systems. The BE3-76SH utilizes a user-
supplied 50 mV or 100 mV shunt to quickly detect excessive
dc current. When the monitored current exceeds the user-
adjustable setpoint and the user-adjustable inverse time
delay expires, a set of DPDT output contacts changes state
and the red RELAY LED lights. A green POWER LED
indicates the presence of relay operating power.
SPECIFICATIONS
Operating Power
Voltage (Style xxxAx): 90 to 150 Vac
Voltage (Style xxxBx): 180 to 300 Vac
Frequency: 45 to 65 Hz
Burden: <2 VA
Sensing Input
Rated Value: 50 mVdc (style xFxxx)
100 mVdc (style xGxxx)
Input Impedance: 50 k
Ω
Source Impedance: 100
Ω maximum
Overload: 10 times input continuously
Setpoint
Overcurrent Range: 40 to 120% ( ±3%) of nominal
shunt input
Differential: Fixed at 5%
Repeatability: <0.5% of full span
Time Dial: 0.1 to 20
Relay Output
Relay Type: D.P.D.T.
AC Rating: 250 V, 5 A, non-resistive,
1,200 VA
DC Rating: 125 V, 1 A, resistive, 120 W
Mechanical Life: 5 million operations
Environment
Temperature
Operating: 0°C (32°F) to 60°C (140°F)
Functional: –25°C (–13°F) to 70°C (158°F)
Storage: –40°C (–40°F) to 70°C (158°F)
Coefficient: 0.03% per °C (300 ppm/°C)
Humidity
Relative: 95% non-condensing
Enclosure
Complies with DIN-EN 50022, BS 5584, any position. Case
material complies with UL 94 VO.
Size: 55 mm (2.17 in)
Weight: 400 g (14.1 oz)
Mounting: DIN rail, 35 by 7.5 mm
Enclosure Code
Case: IP 50
Terminals: IP 30
Applicable Standards
General
IEC 144, BS 5420, VDE/VDI 0435, IEC 947, EN 60947
Safety
BS EN 61010, DIN 57411, VDE 0411, ANSI C37
Surge Withstand
IEC 801, EN 55020, ANSI C37-90a
Radio Frequency Interference
RFI degree N, complies with VDE 0875
cULus
cULus listed to UL 508 and CSA C22.2 No. 14
CE Compliance
This product meets or exceeds the standards required for
distribution in the European Community.
GOST-R Certification
GOST-R certified per the relevant standards of Gosstandart
of Russia.
OPERATION
BE3-76SH relays have two user-adjustable controls: SET
and TIME DIAL.
The SET control defines the level of dc current that causes
the BE3-76SH to trip. The SET control has an adjustment
range of 40 to 120% (
±3%) of the nominal shunt rating.
The TIME DIAL control defines the time delay from when the
monitored dc current reaches the trip point and the output
contacts change state. The TIME DIAL control has an
adjustment range of 0.1 to 20.
The settings of the SET and TIME DIAL controls are related
by an inverse function. See Figure 1. This means that the
higher the sensed current rises above the setting of the SET
control, the shorter the time to a relay trip. The TIME DIAL
setting is a linear multiplier for the time to a relay trip.
MOUNTING
BE3-76SH relays should be installed in a dry, vibration-free
location where the ambient temperature does not exceed
the operating temperature range.
BE3-76SH relays are designed for mounting on standard
DIN rails that comply with DIN-EN 50022. Mounting involves
hooking the top edge of the cutout on the base of the case
over one edge of the DIN rail. The opposite side of the
cutout containing the release clip is then pushed over the
opposite side of the DIN rail. To remove or reposition the
relay, lever the release clip and move the relay as required.
Publication
9409900990
Revision
D
Instructions
Date
04/14
Copyright
2014