ABB OEM Instrument Transformer Reference Guide April 2014600 Volt Current Transformers Primary current Window Diameter (in.) ABB Type GE-ITI Equivalent ABB Product Bulletin Page 50 to 1000 2.5 IMC N/A 1VAP428101-DB 4-5 600 to 4000 5.5 CLC N/A 1VAP428241-DB 4-5 2000 to 6000 8.25 CLE N/A 1VAP428261-DB 6-7 750 to 4000 5.5 RLC N/A 1VAP428281-DB 8-11 200 to 4000 5.75 DEH-705 N/A 1VAP701011-DB 12-13
Transformer protection Calculation of the Current Transformer Accuracy Limit Factor, Application note (English - pdf - Information) Current Transformer Requirements for Non-Directional Overcurrent Protection, Application note (English - pdf - Information) SPAU 341 C, 10223-AB 341 C1 Circuit diagram with test switch (English - pdf - Circuit diagram)
MEDIUM VOLTAGE PRODUCTS Current and Voltage ... Tab. 1. Maximum allowed torques for screw connections of current transformers Maximum allowed torque for screw connection of voltage transformer is 20 Nm. Maximum allowed cantilever strength is: Voltage transformers 2000 N. Current transformers 5000 N. In case of Bus CT, there must be always con-nected CT shielding to the primary bar. Connec-
2004ABB Cover 1.qxp 12/17/2004 11:52 AM Page 1 ... Current-Voltage Relay Volt Meter Transformer or Power Sub-Station Watt Meter H1 H2 X1 X2 H1 X1 H2 X2 H1 H2 X1 X2 +-+-+-+-+-+-W R R A B V R Ammeter A R Figure 2: Instrument Transformer Connections A. The current transformer is designed to connect in series with the line to transform the line current to the standard 5 amperes suitable for the ...
Instrument Transformers Application Guide 8.8.2 Transformer and reactor bushing current transformers 103 8.8.3 Physical order of cores in a current transformer 104 8.8.4 Location of voltage transformers 104 9. Protective relays 105 9.1 Current transformer classification 105 9.2 Conditions 106 9.3 Fault current 106 9.4 Secondary wire resistance and additional load 107
Medium voltage products Technical guide The MV ... 27 Inductive current transformers (TA-I, TA-T, TO) 30 Inductive voltage transformers (TV-I) 31 Non-inductive current and voltage sensors (TA-NI, TV-NI) 32 5. Protection relays 37 6. Diagram of user system for connection and MV switchgear 37 6.1 Diagram of the user installation 40 6.2MV switchgear solutions 42 7.
ACH550 5. Install wiring WARNING! Ensure the motor is compatible for use with the ACH550. The ACH550 must be installed by a competent person. If in doubt, contact your local ABB sales or service office. Conduit kit Wiring R1…R6 drives with the UL type 1 Enclosure requires a conduit kit with the following items: • conduit box •screws • cover
Instrument Transformer Basic Technical Information and ...heavier wire on the steel core and is called the secondary winding. The other winding consists of a relatively large number of turns of fine wire, wound on top of the secondary, and is called the primary winding. Current transformers are constructed in various ways. One method is quite similar to that of the potential transformer in that there are
Instrument Transformers and Sensors Current and voltage measurements from 0.6 kV to 48 kV for the protection and monitoring of medium voltage power systems. The range of electric values in power supply systems is very extensive. This is why it is necessary to match the respective currents and voltages to the values appropriate to connected measuring, protection, and control ...