Table of Contents
Advertisement
Quick Links
INSTRUCTION MANUAL
OVERCURRENT RELAY
BE1-50/51M-222
FOR
U
N
I
0
T
S
T I M E
+
DIAL
T
E
N
0
T
H
S
C U R V E
S
U
N
I
0
T
S
P I C K U P
+
(0.5 MIN. SET)
T
E
N
0
T
H
S
T I M E
I N S T
R E S E T
T
E
0
N
S
+
P I C K U P
U
N
I
0
T
S
Publication Number:
Basler Electric
Highland, Illinois
R
BE1-50/51M-222
O V E R C U R R E N T
R E L A Y
M A N U A L T R I P
P I C K U P
M A N U A L T R I P
D2644-12
08-18-97
Revision:
9 2520 00 984
A
12/99
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Basler BE1-50/51M-222
Summary of Contents for Basler BE1-50/51M-222
- Page 1 INSTRUCTION MANUAL OVERCURRENT RELAY BE1-50/51M-222 Basler Electric Highland, Illinois T I M E BE1-50/51M-222 DIAL O V E R C U R R E N T R E L A Y C U R V E M A N U A L T R I P...
- Page 2 INTRODUCTION This manual provides information concerning the operation and installation of the BE1-50/51M-222 Overcurrent Relay. To accomplish this, the following is provided. Specifications Functional description Mounting information Setting procedure/example. W A R N I N G ! To avoid personal injury or equipment damage, only qualified personnel should perform the procedures presented in this manual.
- Page 3 First Printing: August 1997 Printed in USA © 1997, 1999 Basler Electric Co., Highland, IL 62249 December 1999 CONFIDENTIAL INFORMATION OF BASLER ELECTRIC COMPANY, HIGHLAND, IL. IT IS LOANED FOR CONFIDENTIAL USE, SUBJECT TO RETURN ON REQUEST, AND WITH THE MUTUAL UNDERSTANDING THAT IT WILL NOT BE USED IN ANY MANNER DETRIMENTAL TO THE INTEREST OF BASLER ELECTRIC COMPANY.
-
Page 4: Table Of Contents
DC Control Connections ....... . 4-5 BE1-50/51M-222 Overcurrent Relay, Rear View ....4-6 SECTION 5 TESTING General . - Page 5 CONTENTS - Continued SECTION 6 MAINTENANCE General ..........6-1 In-House Repair .
-
Page 6: Section 1 General Information
50 hertz or 60 hertz power systems. The BE1-50/51M-222 Overcurrent Relay is a special, modified relay with software for a Load Demand Characteristic Curve in place of the short inverse standard curve. -
Page 7: Load Demand Curve
M A N U A L T R I P P I C K U P D 2 6 4 4 - 1 2 08-18-97 Figure 1-1. BE1-50/51M-222 Overcurrent Relay, C1 Case Load Demand Curve Scenario Configure the relay such that when the sensed current is: Time to trip 1.0 hour... -
Page 8: Specifications
M U L T I P L E O F P I C K U P Figure 1-2. Load Demand Characteristic Curve SPECIFICATIONS BE1-50/51M-222 Overcurrent Relays have the following features and capabilities. Continuous current: 14 amperes. One second current: 400 amperes. Current Sensing Input 0.5 to 15.9 amperes in 0.1 ampere steps. - Page 9 BE1-50/51M-222 General Information TIME PICKUP Accuracy ±2% ±25 milliamperes at or above 0.5 ampere settings. Frequency Response A change of ±5 hertz from the nominal 50/60 hertz current causes less than 0.5% change in the current required for pickup. TIME DIAL Range 0.0 to 9.9, in 0.1 steps.
- Page 10 BE1-50/51M-222 General Information Harmonic Response BE1-50/51M-222 harmonic rejection is illustrated in Figure 1-4. Figure 1-4 shows that a relay set for one ampere pickup would pickup at 0.96 ampere on a current containing 40% seventh harmonic. This corresponds to a ten-to-one rejection ratio. Other conditions may be evaluated in the same manner.
- Page 11 Closing SW8-4 selects the integrating reset characteristic. The integrating reset characteristic simulates the disk reset of electromechanical relays. BE1-50/51M-222 relays provide the integrating reset function even when input current falls to zero. Integrating reset characteristics are shown in Figure 1-6.
- Page 12 BE1-50/51M-222 General Information 1000 Multiple of Tap This chart vertical axis x D (Seconds) is applicable for all curves and is derived from multiplying the curve selected times D (the TIME DIAL setting). Figure 1-6. Integrating Reset Characteristic Curve Output contacts are surge protected and rated as follows:...
-
Page 13: Characteristic Curves
To order full-size drawings of these characteristic curves, contact the Customer Service Department of the Power Systems Group, Basler Electric, and request the 99-(4 digit) number associated with each graph. These graphs are full size characteristic curves on transparent paper (vellum). - Page 14 BE1-50/51M-222 General Information MULTIPLES OF PICK-UP Figure 1-7. Time Characteristic Curve 99-1610, Load Demand Curve...
- Page 15 BE1-50/51M-222 General Information MULTIPLES OF PICK-UP Figure 1-8. Time Characteristic Curve, 99-1370, L-Long Inverse 1-10...
- Page 16 BE1-50/51M-222 General Information MULTIPLES OF PICK-UP Figure 1-9. Time Characteristic Curve, 99-1371, D-Definite Time 1-11...
- Page 17 BE1-50/51M-222 General Information MULTIPLES OF PICK-UP Figure 1-10. Time Characteristic Curve, 99-1372, M-Moderately Inverse 1-12...
- Page 18 BE1-50/51M-222 General Information MULTIPLES OF PICK-UP Figure 1-11. Time Characteristic Curve, I-Inverse 1-13...
- Page 19 BE1-50/51M-222 General Information MULTIPLES OF PICK-UP Figure 1-12. Time Characteristic Curve, 99-1374, V-Very Inverse 1-14...
- Page 20 BE1-50/51M-222 General Information MULTIPLES OF PICK-UP Figure 1-13. Time Characteristic Curve, 99-1375, E-Extremely Inverse 1-15...
- Page 21 BE1-50/51M-222 General Information MULTIPLES OF PICK-UP Figure 1-14. Time Characteristic Curve B, 99-1376, BS142-B 1-16...
- Page 22 BE1-50/51M-222 General Information MULTIPLES OF PICK-UP Figure 1-15. Time Characteristic Curve, 99-1377, BS142-C 1-17...
-
Page 23: Section 2 Controls And Indicators
SECTION 2 CONTROLS AND INDICATORS GENERAL Table 2-1 lists and briefly describes the BE1-50/51M-222 controls and indicators. Reference the callouts to Figures 2-1 and 2-2. Table 2-1. BE1-50/51M-222 Controls and Indicators (Refer to Figures 2-1, 2-2, and 2-3) Locator Control or Indicator... - Page 24 BE1-50/51M-222 Controls and Indicators Table 2-1. BE1-50/51M-222 Controls and Indicators - Continued Locator Control or Indicator Function SW8-4 Provides selection of either instantaneous or integrating Continue reset characteristic. Closing SW8-4 provides integrating reset. Opening SW8-4 provides instantaneous reset. Auxiliary Output Jumper...
- Page 25 BE1-50/51M-222 Controls and Indicators Figure 2-2. BE1-50/51M-222, Location of Controls and Indicators...
-
Page 26: Section 3 Functional Description
SECTION 3 FUNCTIONAL DESCRIPTION GENERAL BE1-50/51M-222 Overcurrent Relays are microprocessor based non-directional relays that measure ac current to provide secure and reliable instantaneous and time overcurrent protection for power systems. FUNCTIONAL DESCRIPTION Sensing Input Single phase ac current from system current transformers (CT) is brought into the BE1-50/51M Overcurrent Relay at terminals eight and nine. -
Page 27: Power-Off Sensing
BE1-50/51M-222 Functional Description The microprocessor performs the program operations based on the inputs and the internal software program. When the sensed current exceeds the TIME PICKUP setting, the TIME PICKUP LED is turned ON. TIME contacts (51 and 51 AUX) are closed in accordance with the time characteristic curve. If the sensed current exceeds the INST PICKUP setting, the INST contacts (50) are closed. -
Page 28: Section 4 Installation
If there is evidence of damage, immediately file a claim with the carrier and notify the Regional Sales Office, or contact the Sales Representative at Basler Electric, Highland, Illinois. Proper operation of the relay may be confirmed by performing the operational test procedure in Section 5, Testing . -
Page 29: Outline Dimensions
BE1-50/51M-222 Installation Figure 4-1. Outline Dimensions, C1 Case... -
Page 30: Panel Drilling Diagram, C1 Case
BE1-50/51M-222 Installation Figure 4-2. Panel Drilling Diagram, C1 Case... -
Page 31: Connections
BE1-50/51M-222 Installation %100'%6+105 Incorrect wiring may result in damage to the relay. Be sure to check model and part number before connecting and energizing a particular relay. NOTE Be sure the ground terminal is hard-wired to the relay panel with no smaller than 12 AWG copper wire attached to the ground terminal on the rear of the terminal strip. -
Page 32: Dc Control Connections
BE1-50/51M-222 Installation Figure 4-4. DC Control Connections... -
Page 33: Be1-50/51M-222 Overcurrent Relay, Rear View
BE1-50/51M-222 Installation Figure 4-5. BE1-50/51M-222 Overcurrent Relay, Rear View... -
Page 34: Section 5 Testing
If there is evidence of damage, immediately file a claim with the carrier and notify the Regional Sales Office, or contact the Sales Representative at Basler Electric, Highland, Illinois. Proper operation of the relay may be confirmed by performing the operational test procedures in this Section. -
Page 35: Pickup And Timing Test Setup
BE1-50/51M-222 Testing Figure 5-1. Pickup and Timing Test Setup T E S T S E T C U R R E N T A M P S S O U R C E B E 1 - 5 0 / 5 1 M... -
Page 36: Test Procedure
BE1-50/51M-222 Testing NOTES When testing TIME overcurrent functions, INST PICKUP settings of 00 will affect the calibration of the TIME functions. TIME PICKUP settings of 00 also affect INST functions. Test Procedure Time Pickup Test Perform preliminary setup: Connect test setup as shown in Figure 5-1. - Page 37 BE1-50/51M-222 Testing Step 4. Slowly increase current to terminals 8 and 9. INST contacts should close at an input current of 7.815 to 8.185 amperes. Step 5. Decrease input current until INST output contacts open. Time Dial Test Perform preliminary setup: Connect test setup as shown in Figure 5-1.
- Page 38 BE1-50/51M-222 Testing Manual Trip Test Perform preliminary setup: Connect test setup as shown in Figure 5-2. Insure that SW8 switches are set correctly: SW8-1 for operating frequency, SW8-2 to OFF (no instantaneous delay), SW8-3 to OFF (no instantaneous delay), and SW8-4 to OFF (selects instantaneous reset).
-
Page 39: Setting The Relay
All relays should be tested periodically to identify and correct any problems that are found. Single phase relays such as the BE1-50/51M-222 are normally used in groups of four (three phase and ground) on the protected circuit. Only three are required at any one time to provide complete protection. -
Page 40: Section 6 Maintenance
All relays should be tested periodically to identify and correct any problems that are found. Single phase relays such as the BE1-50/51M-222 are normally used in groups of four (three phase and ground) on the protected circuit. Only three are required at any one time to provide complete protection. -
Page 41: Periodic Test
BE1-50/51M-222 Maintenance Periodic Test Periodic testing should consist of the following procedures. Step 1. Verify that the instantaneous pickup is within ±2% of the value set on the dials. Pickup occurs when the INST output contacts close. Step 2. Verify that the time pickup is within ±2% of the value set on the dials. Pickup occurs when the LED turns ON. -
Page 42: Section 7 Manual Change Information
SECTION 7 MANUAL CHANGE INFORMATION SUMMARY AND CROSS REFERENCE GUIDE This section contains information concerning the previous editions of the manual. The substantive changes to date are summarized in the Table 7-1. Table 7-1. Changes Revision Summary of Changes ECO/Date Changed all references to the current for testing the targets to an ac 7480/12-20-99 only type of current.
Need help?
Do you have a question about the BE1-50/51M-222 and is the answer not in the manual?
Questions and answers