Multi-channel AC, pulsed DC sensitive load current evaluator for AC systems (TN, TT and IT systems)

Device features • Optional AC or pulsed DC sensitive measurements for each channel • 12 measuring channels per individual device for load current • Up to 90 evaluators CMS460-D in the system (1080 measuring channels) • Fast parallel scanning for all channels • Preset function • Adjustable time delays • Adjustable frequency behaviour (e.g. fire and plant protection) • History memory with date and time stamp for 300 data records/channel • Data logger for 300 data records/channel • Two alarm relays with one changeover contact each • N/O or N/C operation and fault memory selectable • Connection external...

Load current evaluator CMS460-D Overview of device features Distinctive device features Rated operating current pulsed DC sensitive Type A Backlit graphics display Parameter setting function Password Error code indication Address range Master/slave Internal clock Common alarm relay for all channels Analysis of the harmonics IΔ, THD History memory 300 data records Data logger for 300 data records/ channel PRESET Number of measuring channels Enclosure Operating and display elements CMS460-D Dimension diagram Dimensions in mm 47.5 31.1 1 - ALARM 2 LED lights up when the measured value exceeds or...

Load current evaluator CMS460-D Wiring diagram Connection W…, WR…, WS… series measuring current transformers (pulsed current sensitive) Example: W… 1- C onnection of supply voltage US (see ordering information), 6 A fuse recommended. 2 - Connection of measuring current transformers CT1…CT12 3 - RS-485 interface with BMS protocol 4 - External reset button “R” (N/O contact)* 5 - E xternal test button “T” (N/O contact). The external “T/R” buttons of several devices must not be connected to one another. 6- A larm relay “K1”: Alarm 1, common alarm for alarm, prewarning, device error, ext. alarm (adjustable)...

Load current evaluator CMS460-D Frequency settings The frequency response of the equipment can be set for a linear frequency response (up to the maximum frequency of 2000 Hz) if used for fire protection or for a frequency response in accordance with IEC 60990. For plant protection, the load current is measured up to the rated system frequency. The figure below shows the corresponding frequency response. Frequency curves Response factor = I∆/I∆n (I∆) Response current: Measured value at which the CMS responds. (I∆n) Rated operating current: Set response value 1 - Menu option “50 Hz” – plant protection:...

Load current evaluator CMS460-D Example for the design of a standard system consisting of two CMS460-D and one COM460IP BMS-Ethernet gateway

Load current evaluator CMS460-D Technical data Insulation coordination acc. to IEC 60664-1/IEC 60664-3 for the versions: a) CMS460-D1 Supply voltage frequency Rated insulation voltage Overvoltage category/pollution degree Rated impulse voltage Protective separation (reinforced insulation) between (A1, A2) - (k1, l.k12, R, T/R, T, A, B) Time response Start-up delay f(start-up) per device Response delay fon per channel Delay on release toff per channel Operating time tae at In = 1 x 4,1/2 Response time tan for current measurement Scanning time for all measuring channels (current measurement) Rated...

Load current evaluator CMS460-D Z BENDER Climatic class acc. to IEC 60721 Stationary use (IEC 60721-3-3) 3K5 (except condensation and formation of ice) Transport (IEC 60721-3-2) 2K3 (except condensation and formation of ice) Long-term storage (IEC 60721-3-1) 1K4 (except condensation and formation of ice) Classification of mechanical conditions acc. to IEC 60721 Stationary use (IEC 60721-3-3) 3M4 Connection Operating mode Mounting Degree of protection, internal components (IEC 60529) Degree of protection, terminals (IEC 60529) Enclosure material Flammability class Screw fixing DIN rail mounting...

Load current evaluator CMS460-D Ordering information 11 Absolute values 2) Other versions on request

Measuring current transformer Pulsed current sensitive measuring current transformer Er BENDER The Power in Electrical Safety6 P.O. Box 1161 • 35301 Gruenberg • Germany Londorfer Strasse 65 • 35305 Gruenberg • Germany Tel.: +49 6401 807-0 • Fax: +49 6401 807-259 E-Mail: [email protected] • www.bender.de