DEMA CPM 310 G, User Manual

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Technical Characteristics
Record Details Setting changes, trip records, disturbance records, alarms and other records are
saved with time & date stamps.
Time Information:
day / month / year, hour / minute / second / millisecond.
Distinguishing Time 1 ms
Recordings Quantity 151 records.
Record Structure Record title and time stamp; amplitude, source and input & output status is
applicable.
Records Viewing On the relay menus or over DigiConnect PC program.
Waveform Records Quantity 5 records.
Waveform Record Time 3 s each.
0.4 s record before trigger.
2.6 s record after trigger.
Record Form Current oscillogram.
Records Viewing PC program.
Trigger Via an input or automatically by protection function pick-up.
Pick-up Current and Error
1.05 of threshold (1.6 of threshold for SA Semiconductor curve), error: ±0.1 I
s
Protection Threshold Error ±% 2
DMT and IDMT Delaying Error
±% 5 or ± 40 ms (One of the criteria will be fulfilled). Valid in the range (2 - 20) I
s
.
Measured current is max. 40 I
n
.
Thermal Trip Delaying Error ±% 5 or ± 200 ms (One of the criteria will be fulfilled). Valid in the range (1.5 - 8)
I
s
.
Measuring Error
±%1 at I = I
n
.
Primary Phase Nominal Current Setting range: (1-9999) A, in steps of 1 A.
Secondary Phase Nominal Current 1 A or 5 A. Settings should be done along with dip-switch adjustment.
Primary Earth Nominal Current Setting range: (1-9999) A, in steps of 1 A.
Secondary Earth Nominal Current T1-1A, T1-5A, T2-1A or T2-5A. Settings should be done along with dip-switch
adjustment.
Dielectric Withstand 2,000 V / 50 Hz / 1 min and 2,200 V / 50 Hz / 1 s.
Mounting Options Flush / rack mounting.
Case Construction Socket and draw out construction, automatic secondary circuit bridging function.
Case Dimensions 144 mm x 179 mm x 200 mm (width x height x depth).
Case Level of Protection Front side IP52, rear side and terminals IP20.
Storage & Operation Ambient Temp. min. -25°C, max +70°C
Net Weight 3.5 kg
2.13 General Information
2.12 Current Transformer Compatibility
2.9 Event Records
Stamp Information
2.10 Waveform Records
Record Time Structure
2.11 Error Ratings