Basler Electric BE1-50/51B-219 - Manual (Page 7)

9252000981 Rev J 1
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.
Table 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- or 60-hertz 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-hertz operation
•
Field-selectable 0.0 or 0.1 second, fixed, instantaneous delay
BE1-50/51B-219/-226 Introduction