Supervision relay RXEM 1

Transcription

1 Supervision relay RXEM 1 RXEM 1 (RXEM_a.tif) Features Two independent supervision circuits in one module Undervoltage operation Green LEDs indicate healthy circuits Operation delayed 2.2 s or 1.1 s (24V) Two change-over contacts per circuit No extra auxiliary supply is required Application The relay can be used for detecting loss of DC voltage supply, detection of open circuits, or simply as a drop-off delayed relay in automation circuits. A typical application is continuous supervision of a circuit breaker trip circuit, including the breaker coil, in transmission and subtransmission substations, see Fig. 2. The resistor R is preferably mounted close to the circuit breaker auxiliary contacts. Recommended resistor values are given in Table 9: Resistor R in Trip Circuit Supervision applications. The resistance can be built up by resistors in two or four component blocks RTXE. With two circuits in one module, both the A and B coils of the circuit breaker can be supervised. Note! It is not possible to connect the two RXEM in series in a double supervision solution, with one relay across relay tripping contact and one at the breaker in the open position loop.

2 Technical data Table 1: Functional data Function Rated voltage U r Operate voltage (Drop-off) Reset voltage (Pick-up) Operate time (TOP) when voltage is changed from Ur to 0 Ur = 24 V Ur = 48, , V Reset time when voltage is changed from 0 to U r Power consumption per circuit at U r Ur = 24, 48, V Ur = V Voltage overload capacity, continuously Operate indication Undervoltage, delayed 24, 48, or V DC 17-35% of U r < 80 % of U r Typical value: 1,1 s 2,2 s < 10 ms < 0,6 W < 1,3 W 110 % of U r One green LED for each circuit Table 2: Environmental conditions Quantity Type test values Reference standard Nominal operative temperature range -25 C to +55 C IEC Transport and storage temperature range -40 C to + 70 C IEC , -2 Damp heat test, steady state 93 % humidity, 40 C, 4 days IEC Damp heat test, cyclic % humidity, C, 6 cycles h IEC Degree of protection IP 44 IEC Table 3: Ambient temperature dependence Influence on Within temperature range Dependence Operate voltage -25 C to +55 C < 0,2 %/ C Operate time -25 C to +55 C < 0,25 %/ C Table 4: Electromagnetic compatibility (EMC), immunity tests Test Type test velues Reference standards Spark test 4-8 kv SS , Class III 1 MHz burst test - common mode 2,5 kv IEC , Class III - differential mode 1,0 kv Electrostatic discharge test 8 kv, air discharge IEC , Class 3 Fast transient/burst test 4 kv IEC , Class A Surge test - line to earth 2 kv IEC line to line 1 kv Power frequency test - common mode - differential mode 150 V, 50 Hz 300 V, 50 Hz IEC , Class A 2 Supervision relay - 1MRK BEN Revision: B

3 Table 5: Insulation tests Test Type test value Reference standard Dielectric test 2,0 kv, 50 Hz, 1 min across open contacts 1,0 kv, 50 Hz, 1 min IEC Impulse voltage test 5 kv, 1,2/50 μs, 0.5 J IEC Insulation resistance >100 MΩ at 500 V IEC Table 6: Mechanical tests Test Type test value Reference standard Vibration test - response test 0,075 mm/1,0 g, Hz IEC , Class 2 - endurance test 2,0 g, Hz Shock test - response test 5 g, 11 ms IEC , Class 1 - withstand test 10 g, 11 ms Bump test 10 g, 16 ms IEC , Class 1 Seismic test IEC , Class 2 - X- and Y- axes 11 mm /3 g, 1-50 Hz extended by 1 g - Z- axis 7,5 mm/2 g, 1-50 Hz Table 7: Contact data Type of contact Highest system voltage Recommended contact voltage Contact current capacity continuous max 4 s Making capacity Breaking capacity for AC Breaking capacity for DC, L/R 40 ms, 24 V 48 V 110 V 220 V Two change-over contacts per circuit 250 V AC/DC V AC/DC 1 ma to 5 A 15 A 15 A 2000 VA 2,0 A 0,7 A 0,2 A 0,15 A Table 8: Weight and dimension Data Weight 250 g Dimensions width 6 C modules height 2 U modules Table 9: Resistor R in Trip Circuit Supervision applications, see Fig. 2. Rated voltage U r Recommended value 48 V DC 1,0 kω 4 W V DC 5,6 kω 4 W V DC 10 kω 8 W Supervision relay - 1MRK BEN Revision: B 3

4 Diagrams Diagrams (xx tif) (xx tif) Figure 1: Terminal diagram for the two circuits A and B in RXEM 1. Figure 2: RXEM 1, circuit A, used as Trip Circuit Supervision Relay. 4 Supervision relay - 1MRK BEN Revision: B

5 Ordering, mounting and references Ordering Specify: RXEM 1 supervision relay Quantity Rated voltage Quantity Ordering number 24 VDC 1MRK AD 48VDC 1MRK AH VDC 1MRK AN VDC 1MRK AS Mounting The relay shall be mounted on separately ordered COMBIFLEX bases. For mounting details refer to the catalogue for mounting systems and parts. References Documents RTXE Component blocks COMBIFLEX connection and installation components Relay mounting systems 1MRK BEN 1MRK BEN 1MRK BEN Supervision relay - 1MRK BEN Revision: B 5

6 Contact us ABB AB Substation Automation Products Västerås, Sweden Phone: +46 (0) Note: We reserve the right to make technical changes or modify the contents of this document without prior notice. ABB AB does not accept any responsibility whatsoever for potential errors or possible lack of information in this document. We reserve all rights in this document and in the subject matter and illustrations contained herein. Any reproduction, disclosure to third parties or utilization of its contents in whole or in part is forbidden without prior written consent of ABB AB. 1MRK BEN Revision: B ABB India Limited Plot no. 4A, 5 & 6, II Phase Peenya Industrial Area Bangalore India Phone: Facsimile: Copyright 2014 ABB. All rights reserved.