> Description
The ACR series is a range of medium power inverters that provide a 230Vac true sinewave
output with very low distortion. Designed for connection directly to the train auxiliary supply, the
inverters incorporate surge and transient filtering ensuring compliance with both the traditional
and latest rail specifications and norms for protection and EMC. The rugged construction and
various mounting options ensure compliance with vibration and shock requirements.
Special features include:
• True sinewave output
• 750W continuous output power (800W peak)
• Very low distortion
• Protected to IP65
> Input Specifications
The following input voltages versions are available as standard:
110V (66.0 - 137.5V) dc (Suffix A)
72V (43.2 - 90.0V) dc (Suffix D)
52V (31.2 - 65.0V) dc (Suffix C)
36V (21.0 - 50.4V) dc (Suffix F)
24V (16.8 - 33.6V) dc (Suffix B)
(24V version de-rated to 600W)
Other ranges are available to order
Parameter Detail
Input Ripple To RIA 13 and EN50155
Input Protection Reverse polarity protection via shunt diode that will trip an external
circuit breaker. Surges and transients EN50155
Inrush Current 5 x nominal current (after 0.1ms)
Efficiency 85% typically
Hold up time 10ms to EN50155 Class S2
> Output Specifications
Parameter Detail
Maximum Output Power
750W continuous
800W peak (for 15 seconds)
Output Voltage
230Vac
Setting Tolerance
±1% at 50% load, 15°C to 25°C
Output frequency
50Hz
Frequency Tolerance
±2%
Waveform
True Sinewave
Harmonic Distortion
<6%
Output Current
Nominal 3.3 Amps
Line & Load Regulation
±4.0% combined
Temperature Coefficient
<0.02% / °C
Output Ripple
Typically 5% Pk-Pk of Output Voltage
Short circuit protection
Operates instantaneous if output exceeds 10A (typically).
Auto recovery.
Overload protection
Inverter shuts down if output power exceeds approximately 800W
for longer than 16 to 20 seconds. LED indications provided.
Resets automatically after approximately 10 seconds.
Isolation
Input to Output 1.5kV ac (tested at 2.2kV dc)
Input to Case 1.5kV ac (tested at 2.2kV dc)
Output to Case 1.5kV ac (tested at 2.2kV dc)
Relay Contacts 1.5kV ac
Indicators & signalling
Input present Green LED
Output present Green LED
Overload trip Red LED
Relay contacts NO /NC volt-free contacts changeover to indicate
output is present. Contact rating 1A.
>>> September 2010
750W POWERTRON
®
ACR SERIES
DC/AC INVERTER FOR RAILWAY APPLICATIONS
www.martekpower.com
> Environmental Details
Parameter Detail
Operating Temperature -25°C to +55°C (no derating)
Storage Temperature -40°C to +80°C
Cooling By convection
Relative Humidity 95% max.
Shock & Vibration EN 50155 (EN 61373), RIA 20
Environmental Protection IP65
> Applicable Norms
Parameter Detail
EMC RIA 12, 18, EN50155 (2007), EN50121-3-2 (2006)
Other RIA 13, 18, 20, EN50155 (2007)
> Mechanical Characteristics
Parameter Detail
Construction Fully enclosed in sealed aluminium case
Dimensions Length = 339mm (395mm including plate)
Width = 250mm
Height = 145mm
Weight <6kg
Connections 19 way circular bayonet connector (shell size 22-14)
Fixings See below for guidance.
www.martekpower.com
Glebe Farm Technical Campus Knapwell Cambridge CB23 4GG UK Tel. +44 (0) 1954 267726 Fax. + 44 (0) 1954 267626 sales@martekpower.co.uk
SEE SPECIFICATION 858-951 FOR ELECTRICAL DATA.
INPUT / OUTPUT CONNECTOR:
19 way CIR shell size 22-14
AB Connectors: ABCIRH-03T-2214-PCN F80 VO
or an approved equivalent.
PIN OUTS:
C, D, E & P: +Ve dc input
A, B, M & N: -Ve dc Input
H & J = Output Status, voltage free relay contacts
(N/O) closed = Good
R = AC out (Live)
T = AC out (Neutral), connected to chassis.
V = Chassis
360.0
339.0
250.0
= =
145 MAX + SCREW HEADS.
395 MAX.
4 x Ø10mm FIXING HOLES.
M5 EARTH STUD
145.0
4.0
94 ± 2
205 ± 2
86 ± 2
110.0
CAUTION
NO WORK SHOULD BE ATTEMP TED
ON THIS POWER SUPPLY BY ANYONE
NOT FAMILIAR WITH SERVICING
PROCEDUR E S AND PRECAUTIONS
AC OK
DC OK
LOCK OUT
130.0
3
OUTPUTS
VOLTAGE
MOD STATUS
FUSE RATING
CURRENT
:
0
:
:
21
MODEL No
SERIAL No
INPUT
:
:
:
:
456789
High Voltage
DANGER
240V AC
978
Mod status
043512 6
Powertron ACR750 Series
DC - AC Inverter
Cambridge, UK
www.powertron.co.uk
Made in UK
www.martekpower.co.uk
>>> September 2010