Basler Electric BE1-50/51B-122 - Manual (Page 13)

9252000981 Rev H BE1-50/51B-219/-226 General Information 1-1
SECTION 1
 GENERAL INFORMATION
INTRODUCTION
BE1-50/51B-219 and BE1-50/51B-226 protective relays are direct replacements for Westinghouse/ABB
type CO relays. The BE1-50/51B-219 has a 5 ampere current sensing input. The BE1-50/51B-226 has a
1 ampere current sensing input. Specific relays by catalog number are listed in Table 1-1.
Table 1-1. ABB Relays Suitable for Direct Replacement
ABB Catalog Number Curve Type
CO-2
111N
Short Time
CO-5
111N
Long Time
CO-6
111N
Definite
CO-7
111N
Moderately Inverse
CO-8
111N Inverse
CO-9
111N
Very Inverse
CO-11
111N Extremely Inverse
 Any digit covering all pickup ranges and 50 Hz or 60 Hz models.
To replace an existing Westinghouse/ABB type CO (hereinafter referred to as ABB relay), perform the
following steps.
1. Select the desired relay settings on your new BE1-50/51B-219 or BE1-50/51B-226 relay.
2. Remove the existing ABB relay cradle.
3. Insert the new relay cradle.
4. Close the knife-blade switches.
5. Install the new Basler Electric cover and secure with the captive thumbnut.
Basler Electric BE1-50/51B-219 and BE1-50/51B-226 protective relays are self-powered, microprocessor-
based, non-directional phase or ground relays that monitor the magnitude of a single-phase ac current to
provide accurate instantaneous and time overcurrent protection for 50 Hz or 60 Hz power systems. Each
model covers 15 popular time characteristics, a wide range of pickup settings, and field selectable
instantaneous or integrating reset.
FEATURES
A wide range of pickup settings and front panel selectable time characteristics permit applications
involving coordination with fuses, reclosers, cold load pickup, motor starting, and fixed time requirements.
Also, an integrating reset function is available to simulate the disk reset of electromechanical relays.
BE1-50/51B-219 and BE1-50/51B-226 overcurrent relays have the following standard features.
 Independent time and instantaneous elements
 A secure method to manually trip the breaker at the relay front panel
 Direct reading front panel controls
 Minimum pickup setting for safety during installation
 Time characteristics extend to a pickup multiple of 40
 Rugged draw-out construction with steel case
 Gravity latching targets retain indication without power
 Built-in accuracy eliminates internal adjustments
 Minimum transient overreach
 Field selectable characteristic curve selection similar to either GE IAC or ABB type curves
 Field selectable instantaneous or integrating reset
 Field selectable 50 or 60 Hz operation
 Field selectable 0.0 or 0.1 second, fixed, instantaneous delay
Internal switches provide for selecting system operating frequencies of 50 or 60 Hz, instantaneous
element delays of 0.0 or 0.1 second, characteristic curve group selection for either ABB CO or GE IAC