5-3
5
5.1.3 EXT PSU (NBD-904)
Table 5.1.3 Principal Specification of EXT PSU
Item Specification
Line voltage AC: from +100V to +220V /DC: +24V
Line voltage range AC:+89V to +266V/ DC:+19.2 to +31.2V
Line frequency range 47 Hz to 64Hz
Function
• DC power automatic backup at AC power failure
• DC input is only available when AC input is stopped.
• DC output is only supplied through DC input (condition: over
+18V and “REMOTE CONT” is short).
Control Signal
• REMOTE CONT +/- (Input): When open, DC input is not
available, when short, DC input is available.
• AC FAIL +/- (Output): When AC input is stopped, between + and
– is open, when AC input is available, between + and – is short.
(Output rating: DC 30V, 30mA)
Output Floating type DC+24V, 8.5A (max, 5minutes) 6.5A (Continuous)
Switch
• DC INPUT: turn on/off DC input + line.
• DC OUTPUT: turn on/off DC output +/- line
LED
• AC operation is lighted up, when AC input available.
• DC operation is lighted up, when DC output is supplied through
DC input.
• DC output is lighted up, when DC output is available.
Protection Protection by No-Fuse breaker or Fuse (DC over current only)
• Over voltage (Input) +35V DC , +280V AC
(Automatic protected. => Protected is removed after turn off/on.)
• Over current (Output) 13.0A (AC.. automatic), 15.0A (DC … Fuse)
Others Isolation against ground: > 1M ohm at DC 500V
Temperature: Compatible with IEC 60945
Fuse: DC32V, 15A (DC+/- input)
Dimensions
168 mm(W) × 250 mm(D) × 98 mm(H)
Weight 2.6 kg
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