Hung Chang HC-5050E Instruction Manual

@S

HUNG CUM

SAFETY RULES

Waming

This tester has been designed with safety in mind. However,
no design
circuits
poor safety practices are used.

tan

completely

tan

be dangerous and/or lethal when

protect

against incorrect use. Electrical

lack

of caution or

.

Read The Manual

Read this

Voltages and currents within the capability of this test equip-
ment

tan

every measurement. Read and understand the general instructions

before attempting to use this

the tester.

Instruction

be hazardous. Follow the instructions in this manual for

Manual carefully and completely.

tester. DO not exceed the limits of

Safety Check

Double check the switch setting, and lead connections before
making measurements. Are you

Disconnect the tester or turn off Ce power before
switch positions.

D

O

not connect to circuits with voltage present when switch is

in any ohms or

.

When replacing fuses,use only specified type fuses and insert in

correct fuse holder.

current Position.

folIowing

all of the instructions?

changing

Don’t Touch

Don’t

‘of an electrical circuit, If in doubt, check the circuit first for

voltage before

Turn off the power to a circuit before connecting test probes
to it. Be sure there is no voltage present before you
circuit.

D

tauch

exposed wiring, connections or other “live” Parts

touching it.

O

not use cracked or broken test leads.

tauch

the

.

-l-

High Voltage 1s Dangerous

Always

present before making connections to the circuit.

Don’t tauch the tester, its test leads, or any part of the

while it is switched on.

Start

with the power off. Be sure there is no volt@e

?‘: ’ ;: .;

circu\\* ,:i’

Distribution Circuits Pack A Punch

.In high energy circuits such as distribution transformers and

bus bars, dangerous
is shorted. If the tester is connected
when set to a low resistance range, a current range, or any other
low impedance range, the circuit is virtually shorted.

Special

able. Contact a qualified person for assistance before attempting
to make measurements on any high energy circuit.

equipment designed

arcs

of explosive nature

‘for

tan

occur if the circuit

across

a high energy circuit

use with these circuits is

avail-

SAFETY IS NO ACCIDENT

f%\:

‘$.’ c

I,

- -2 -

SECTION 1

Introduction & Specification

FIG. l-l. Controls, Indicators and Connectors

-3-

Table l-l. Controls, Indicator and Connector

E-1.
\T

-2.

g-

(3

-1, 2, 3, 4. Input Sockets (Compiled to UL1244, VDE 0411) :

@.

Power-On-Off

ment off or on.

Working sign lamp: The lamp will

BAT in this instrument is applied and in good condition.
If not glow, the 9V BAT should be

possible.

Polarity reverse switch: A slide switch used to

polarity instead if the input

4 Inputs sockets are recessed and protected against
accidental contacts.

Test Leads (Compiled to UL 1244, VDE 0411): The test

leads supplied with the equipment give added safety to .
the user
dangerous connections to eventual high voltages. The
prods supplied have guard rings to keep fingers away
from the naked end.

Range Selector Knob: The

positions. It may be turned in either direction to obtain
any desired range and circuit Position.

“0” fi ADJ: Every time, adjust the

that the pointer indicates
OHM range.

Meter Mehanical Zero ADJ: If the meter pointer does not

indicate zero after the instrument’s power has been off,
rotate zero adjustment
zero on the left side of dial.

DC Center Zero ADJ: When pointer is exactly on zero at

Center

ment will be used in Galvano

Inner

core

type moving

High sensitive movement Systems are patented.

switch: A slide switch used to turn the

glow,

indicating that

Change

Signal

reversing.

since

the jacks are shrouded , thus avoiding

Single

Zero

screw

of meter on the * DC

coil

movement :

knob

when the meter is in

until pointer is exactly on

V*A scale
meter

ranges

switch has 24

“0”

ohm ADJ to see

line, this instru-

type.

as soon as

Change

,Ii.

.

ins&ii~;~~-i

,> -4

“..! b.

1%,:‘. .,,‘.

9;Vi’:‘:G

DC

each

-.i$-

. .