Tyco RDU Mk2, Инструкция по установке и программированию, Страница: 52 / 178

RDU Mk2 Installation & Programming Manual Document No: LT0499
Configuring An RDU
Page 5-6 8 April 2015 Issue 1.02
5.3.4 BATTERY SIZE
The maximum battery size given in the specification, Section 3.3.1.3, of 220mm x 520mm x
175mm, is comprised of two 220H * 260W * 175D batteries. The maximum sizes which fit
within this restriction are:
Sonnenschein
A212/50A 50 Ahr
Powersonic PS-12600 60 Ahr
Yuasa NP38-12 38 Ahr
Fitting and removing batteries of this maximum size is difficult, and may require the removal
of any modules or brackets fitted in the bottom of the cabinet.
5.3.5
BATTERY TEST RESISTORS (R52, R53)
The battery test resistors on the MAF module (R52, R53) if fitted, MUST be removed before
installation of the RDU to allow the daily 40 minute battery test to be done without flattening
the batteries or burning out the resistors.
5.3.6 BATTERY OVERCURRENT PROTECTION
The MAF/PSU has two parallel PTCs, rated to carry 3A, for battery overcurrent protection.
Where the Alarm load from the battery to RDU is greater than 3A (i.e. with mains failed) or
where a 6A power supply is used an external, self-resetting, overcurrent device of suitable
rating (greater than 6A, less than 12A, e.g., 10A) must be wired between the battery
terminals on the MAF/PSU and the battery (see Fig 5.3.2). For this option the PTCs must be
shorted by soldering a suitable copper wire between the two adjacent test VB and
BATT+ (TP11 and TP16 on the MAF/PSU).
FIG 5.3.2
BATTERY OVERCURRENT PROTECTION FOR LOADS GREATER THAN 3A