PUBLISHED BY
Vaisala Oyj
Vanha Nurmijärventie 21, FI-01670 Vantaa, Finland
P.O. Box 26, FI-00421 Helsinki, Finland
+358 9 8949 1
Visit our Internet pages at www.vaisala.com.
© Vaisala 2020
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Vaisala.
POWER-1 Power Supply Module
Input terminals
for connecting
AC mains voltage
Terminals for
DC output
Product overview
POWER-1 power supply module is designed for installation in Vaisala transmitters HMT330,
DMT340, MMT330, PTU300, and PTB330. See the User Guide of your transmitter for details.
The POWER-1 spare part item contains the following parts:
The spare part item can optionally be ordered with a mains power cable (with US, AUS, EUR,
or UK plug) and cable gland (M20×1.5).
Figure 1 POWER-1 power supply module
Table 1 POWER-1 specifications
Operating voltage 100 … 240 VAC, 50/60 Hz, 300 mA
Output 24 DC, 500 mA
Connections
Operating temperature −40 … +60 °C (−40 … +140 °F)
Operating humidity 0 … 100 %RH
Outdoor use Yes, inside an IP65 rated closure
Storage temperature −40 … +70 °C (−40 … +158 °F)
Mains power cable temp. rating ≥ +75 °C (+167 °F)
Required housing classification IP65
Overvoltage category II
Pollution degree 2
Operating altitude Max. 3000 m (9843 ft)
UL file number E249387
Electrical safety compliance Low Voltage Directive (2014/35/EU)
Manufacturer Vaisala Oyj, Vanha Nurmijärventie 21, FI-01670 Vantaa, FINLAND
• Power supply module
• Fastening screws (M3×8 DIN7985 PZ A4)
• Wires for connecting the power supply module to a transmitter’s power terminals
Screw terminals for 0.5 … 2.5 mm2 wire (20 … 14 AWG)
UL/IEC/EN/BS 61010‑1
Made in Finland
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