ABB Relion REG670, Technical Manual

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21.5 Technical data
21.5.1 Enclosure
Table 931: Case
Material Steel sheet
Front plate Steel sheet profile with cut-out for HMI
Surface treatment Aluzink preplated steel
Finish Light grey (RAL 7035)
Table 932: Water and dust protection level according to IEC 60529
Front IP40 (IP54 with sealing strip)
Sides, top and bottom IP20
Rear side IP20 with screw compression type
IP10 with ring lug terminals
Table 933: Weight
Case size Weight
6U, 1/2 x 19”
£
10 kg/22 lb
6U, 3/4 x 19”
£
15 kg/33 lb
6U, 1/1 x 19” £ 18 kg/40 lb
21.5.2 Electrical safety
Table 934: Electrical safety according to IEC 60255-27
Equipment class I (protective earthed)
Overvoltage category III
Pollution degree 2 (normally only non-conductive pollution occurs except that occasionally a
temporary conductivity caused by condensation is to be expected)
21.5.3 Connection system
Table 935: CT and VT circuit connectors
Connector type Rated voltage and current Maximum conductor area
Screw compression type 250 V AC, 20 A
4 mm
2
(AWG12)
2 x 2.5 mm 2 (2 x AWG14)
Terminal blocks suitable for
ring lug terminals
250 V AC, 20 A
4 mm
2
(AWG12)
1MRK502052-UEN B
Section 21
IED hardware
1215
Technical manual