Table Of Contents - Marconi LORAIN RHM800E50 Manual

RELTEC
Power Products
CONTENTS. _ _ . _ _ . _ _ . . . . . . _ _ . _ . . . . . . . . . .
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . .
1.
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST APPARATUS . . . . . . . . . . . . . . . . . . . . .
2.
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . .
3.
Electrical Connections. . . . . . . . . . . . . . . . . . .
Alarm and Control Connections. . . . . . . . . . . .
Initial Startup and Checkout. . . . . . . . . . . . . . .
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . .
4.
Starting and Stopping . . . . . . . . . . . . . . . . . . .
Controls and Indicators . . . . . . . . . . . . . . . . . .
Metering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Float Charging . . . . . . . . . . . . . . . . . . . . . . . . .
Equalize Charging . . . . . . . . . . . . . . . . . . . . . .
Automatic Rectller Shutdown . . . . . . . . . . . . .
Ripple Regulator Circuit. . . . . . . . . . . . . . . . . .
Batteryless Operation ( M Option). . . . . . . . . .
Cooling Fans and Temperature Sensors . . . . .
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Cards . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . .
5.
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Float Voltage Adjustment . . . . . . . . . . . . . . . . . 10
Equalize Voltage Adjustment . . . . . . . . . . . . . . 11
Current Limit Adjustment . . . . . . . . . . . . . . . . . 12
Low Voltage Alarm Adjustment . . . . . . . . . . . . 12
High Voltage Alarm Adjustment. . . . . . . . . . . . 13
Low Current Ahrm Adjustment . . . . . . . . . . . .
Overvoltage Shutdown Adjustment . . . . . . . . . 14
Load Sharing Adjustment. . . . . . . . . . . . . . . . . 15
Ripple Regulator Adjustment. . . . . . . . . . . . . . 18
CIRCUIT DESCRIPTION . . . . . . . . . . . . . . . . . 16
6.
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
MODEL RHM8OOE50 RECTIFIER
SPEC. NO. 548502500
CONTENTS (CONTD) . . . . . . . . . . . . . . . .
PAGE
AC Input Circuit . . . . . . . . . . . . . . . . . . . . . . . . 16
1
Power Supply Assembly PSA-A8. . . . . . . . . . . 17
Power Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1
Voltage and Current Regulation Circuitry. . . . . 17
Voltage Reference and Error Detection . . . . . . 17
2
Current Sensing and Current Regulation. . . . . 18
2
Pulse Generation and Phase
Control Circuits. . . . . . . . . . . . . . . . . . . . . . . . . 18
Current Walk-in Circuit. . . . . . . . . . . . . . . . . . . 21
Negative Load Sharing Circuk . . . . . . . . . . . . . 21
4
Ripple Regulator Circuit Card Al 1. . . . . . . . . . 23
3
Fuse Alarm Circuit . . . . . . . . . . . . . . . . . . . . . . 23
Temperature Sensing Circuit . . . . . . . . . . . . . . 23
7
7
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . 24
7.
8
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8
8
Testing Precautions . . . . . . . . . . . . . . . . . . . . . 24
9
Repair and Replacement Information. . . . . . . . 24
9
Test Procedures. . . . . . . . . . . . . . . . . . . . . . . . 31
9
9
MODEL DATA . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.
9
APPENDIX
9
9
1. DESCRIPTION
General
1.1 These LorafnG Rectifiers operate from 60 Hz three
phase input. to maintain a battery in a fully charged condi-
13
tion while powering a load. The Model RHMEWE50 Rec-
tifier can be operated from 480 VAC input power.
1.2 Float Charokra; This rectifier provides constant
output voltage; therefore, output current remains equal to
load current as long as load current does not exceed a
predetermined. adjustable value. This mode of operation
is known as float charging. Since, in normal operation,
Section 4387
Issue Fl , August 4.1997
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