RCMS460CH-L-2 Differenzstrom Auswertegerät, mehrkanal
Schweizer Standardausführung gemäss
NIN Kap.5.3.2.3
Product description
The residual current monitoring system (RCMS system) consists of one or more RCMS460-D/-L or RCMS490-D/-L residual current monitoring devices, which can detect and evaluate residual, residual and operating currents in earthed power supplies via the associated measuring current transformers. The maximum voltage of the monitored network depends on the rated insulation voltage of the measuring current transformers used in busbar systems or the cables or lines used.
The closed measuring current transformers of the W...AB series are required for all-current sensitive measured value acquisition (in accordance with IEC/TR 60755: type B). One AN420 or AN110 power supply unit is required for every 6 W...AB series measuring current transformers.
The W... (closed), WR... (rectangular), WS... (split-core) and WF... (flexible) series measuring current transformers are used for alternating and pulsating currents (according to IEC/TR 60755: type A).
The various measuring current transformers can be connected to the measuring channels of the monitoring devices in any combination. Each RCMS460-D/-L and RCMS490-D/-L has 12 measuring channels. A total of up to 90 residual current monitoring devices can be connected via BMS bus (RS-485 interface with BMS protocol) and thus up to 1080 measuring channels (outgoing circuits) can be monitored.
The frequency response can be set accordingly for use in personal, fire and system protection. The measured currents can be analyzed for harmonics.
Main features:
Alternative to iso-testing in accordance with DGUV V3
Choice of AC, pulse or universal current sensitive measurement by selecting the measuring current transformer for each channel
Preset function
Analysis of harmonics, DC, THF
Adjustable frequency behavior for personal, fire and system protection
Features and functions:
Choice of AC, pulse or universal current sensitive measurement by selecting the measuring current transformer for each channel
True effective value measurement (r.m.s.)
12 measuring channels per individual device for residual current measurement or digital input
Up to 90 RCMS... monitoring devices, 1080 measuring channels in the system
Fast parallel monitoring for all channels
Response ranges: 10 mA...10 A (0...2000 Hz), 6 mA...20 A (42...2000 Hz), 100 mA...125 A (42...2000 Hz) RCMS...-D4
Preset function
Adjustable time delays
Adjustable frequency behavior for personal, fire and system protection
History memory with time stamp for 300 data records
Data logger for 300 data records/channel
Analysis of harmonics, DC, THD
Two alarm relays with 1 changeover contact each
Working/quiescent current and fault memory behavior selectable
External reset/test button connection
Illuminated graphic display (7-segment display) and indicator LEDs
Data exchange via BMS bus
Password protection for device settings
Permanent measuring current transformer connection monitoring
RoHS-compliant
Technical features:
Number of measuring channels per device: 12
Special firmware suitable for Swiss applications
External measuring current transformers: Series
W..., WR..., WS..., (type A), series W...AB(type B)
7-segment display for error code
LED line for alarm from 1 to 12
Dimensions: W 108 x H 90 x D 74mm
Power supply: DC 70...276V, AC 42-460 Hz 70...276V
Applications:
Measuring and evaluating residual, fault and rated currents of loads and systems in the frequency range 0...2000 Hz (measuring current transformers W...AB), 42...2000 Hz (measuring current transformers W..., WR..., WS..., WF...)
Monitoring of fire-hazardous currents in operating facilities at risk of fire
EMC monitoring of TN-S systems for "stray" currents and additional N-PE bridges
Monitoring of N conductors for overload due to harmonics
Monitoring PE and PA conductors for absence of current
Monitoring of residual currents in stationary electrical systems and equipment to determine practical test intervals in accordance with accident prevention regulation BGV A3 and the German Ordinance on Industrial Safety and Health BetrSichV.
Personal and fire protection through fast shutdown
Monitoring of digital inputs