Technical Data TD032075EN
Effective September 2014
PS-1000-28-M1 Power Supply
1000V solar combiner box power supply with battery backup for string monitoring
Description
The PS-1000-28-M1 Power Supply is a fully isolated, high-voltage
DC power supply for solar photovoltaic (PV) energy industry
applications. A wide input voltage range of 250–1000 Vdc gives
installers the flexibility to implement string monitoring solutions
without without the need for low-voltage communications cabling.
Capable of constant 24 Vdc output in rapidly changing solar
irradiance conditions, the power supply includes a separate terminal
for backup battery connection, enabling seamless, UPS-style change
‑over to battery-only operations at night or during cloudy conditions,
ensuring maximum system performance and 24x7 availability.
Thepower supply provides linear, galvanically isolated voltage
monitor output that can interface with telemetry or SCADA
systems, eliminating the need for a separate, isolated voltage
transducer module. Also included is a dedicated contact-relay
output for Power OK signaling.
Integration of the voltage monitor, battery backup and Power OK
signaling conserves space in the combiner box, reduces construction
and wiring time, and simplifies installation.
Features
•
Full 250–1000 Vdc busbar voltage
•
Up to 2A output current
•
Built-in isolated busbar monitor circuit
•
Built-in Power OK output
•
Built-in battery backup system
•
2500V RMS (1 min) input and output galvanic isolation
•
UL 1741 compliance
•
Compact DIN rail mounting
•
Input under/over voltage protection
•
Input reverse polarity protection
•
Output voltage adjustment 22–30 Vdc
•
Output over-voltage and overload protection
•
Output short-circuit protection
•
Fanless convection cooling
Technical Data TD032075EN
PS-1000-28-M1 Power Supply


Effective September 2014
Specifications
SPECIFICATION
Input and Output
Input
Output
Protection
Input monitor
Output Monitor
Compliance
Safety
EMC
UL
SPECIFICATION
DESCRIPTION
Voltage: 250–1000 Vdc
Current: <0.6A @ 250 Vdc
Galvanic isolation: 2500V RMS (1 min)
Nominal voltage: 28.4 Vdc, no load to max load 2A a
Adjustment range: 22–30 Vdc
Output tolerance: ± 3% b, ripple/noise max 280 mV c
Efficiency (typ): 82%, max output 56W
Galvanic isolation: 2500V RMS (1 min)
Output over voltage: 36V
Output over load at 150% of rated load
Output short-circuit protection
Shutdown protection when input voltage <220 Vdc
Shutdown protection when input voltage >1050 Vdc
Linear output (1.25–5V) for 250V–1000V busbar
voltage range
Galvanic isolation: 2500V RMS (1 min)
Clean contact relay, closed for OK (3A, 30 Vdc, 250 Vac)
General
Temperature
Humidity
Mounting
Weight
Dimensions
DESCRIPTION
–40 to +158°F (–40 to +70°C), operating
–40 to +185°F (–40 to +85°C), storage
20–90% RH noncondensing, operating
10–95% RH noncondensing, storage
DIN rail, open frame style
1.6 lbs (0.75 kg)
7.6" x 4.9" x 2.0" (192 mm x 123.6 mm x 50 mm)
NNote: Specifications are subject to change.
NNote: Unless otherwise noted, all measurements are based on 420 Vdc
input, output max at ambient 77°F (25°C) and 70% RH.
a At temperatures below –4°F (–20°C) and above 122°F (50°C), max output is derated to 60%
of full load.
b Output tolerance includes setup voltage, line regulation, and load regulation.
c Ripple/noise is measured at 250–1000 Vdc input with 50–122°F (10–50°C).
UL 1741, EN 60950-1:2006, Standard
EN 55022 (Class B), FCC Part 15 (Class B), EN 55024,
EN 61000-4-2,3,4,5,6,8
UL listed
Ordering
PRODUCT CODE
PS-1000-28-M1
DESCRIPTION
Solar power supply, 1000 Vdc to 28 Vdc, 56W
voltage monitor output, Power OK output
Product Compatibility
See your product data sheet for information about compatibility of
the PS-1000-28-M1 24DC power supply with your application.
Eaton’s wireless business
www.eaton.com/wireless
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Telephone: +1 925 924 8500
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Telephone: +49 228 602 5573
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Shanghai, 201201
China
Telephone: +86 21 2899 3600
Eaton
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Cleveland, OH 44122
United States
Eaton.com
© 2014 Eaton
All Rights Reserved
Printed in USA
Publication No. TD032075EN
September 2014
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