When the above regulators are overhauled in BREL the battery charge contactor (CTR) and the associated cut-in relay (CIR) and regulator relay (REL) are being replaced by a battery charge diode (BCD). This alteration is detailed in Engineering Instruction MD 328 issued to BREL.
The adjustable settings for a modified regulator (BCD fitted) are:-
VSR 30.5Volts Lead Acid Batteries
31.5Volts NIFE Batteries
VDR LNK/2 position 1 permanently
Terminals LT (between B+ and NEG) and LR (between LC and H) are now removed.
A1002 - The Lamp Resistance
D1001 - Train Lighting Introduction
D1009 - Control Panel Description
E1016 - Panel, Enclosure - Open
E1018 - Panel, Totally Enclosed
P1002 - "Liliput" Regulator
P1006 - Tonum Control Panel
W1009 - Control Panel Diagrams