PICO TA189 User Manual

TA189
AC / DC
CURRENT CLAMP
User Guide
SAFETY
The following symbols appear on the product:
Attention! Refer to manual.
Application around and removal from
UNINSULATED HAZARDOUS LIVE conductors
is permitted.
Double/reinforced insulation.
Complies with the relevant European standards.
Do not dispose of this product as unsorted
municipal waste. Contact a qualified recycler for
disposal.
Read all instructions completely before using
this product.
To avoid electric shock:
• Use caution during installation and use of this product.
High voltages and currents may be present in circuit under
test.
• This product must be used only by qualified personnel
practising applicable safety precautions.
• Do not use product if damaged.
• Always connect clamp to display device before it is installed
around the conductor.
• Always ensure that the clamp is removed from any live
electrical circuit, and that leads are disconnected before
removing the battery cover.
• Do not hold the clamp anywhere beyond the tactile barrier
see Fig. 1.
SPECIFICATION
Electrical data
(All accuracies stated at 23°C ± 1°C)
Nominal current ................. 30 A AC
PEAK
or DC
Measuring range (s) ........... 30 A
Overload capacity .............. 500 A (60 s)
Output sensitivity ................ 100 mV/A
Accuracy ............................ ± 1% of reading ± 2 mA
Resolution .......................... ± 1 mA
Gain variation ..................... ±0.01% of reading/°C
Frequency range
1)
............. DC to 100 kHz (0.5 dB)
Power supply ..................... 9 V Alkaline battery
PP3, MN 1604
or IEC6LR61
Load impedance (minimum) > 100 k and 100 pF
General data
Conductor size ................... 25 mm diameter
Output cable and connectors 2 m long coax terminated with
safety BNC connector
Operating temperature ....... 0°C to +50°C
Storage temperature with
battery removed ................. -20°C to +85°C
1)
Accuracy quoted is for conductor in centre of aperture
-20
-15
-10
-5
0
-3
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
10 100 1000 10000 100000
Phase shift in degrees
Gain in dB (wrt 100 Hz)
Frequency (Hz)
Typical frequency plot
Gain
Phase
1
2
3
4
7
9
54
6
8
Fig. 1.
1. Jaws
2. Conventional current direction
3. Tactile barrier
4. Battery cover
5. Battery cover screw
6. Jaw trigger
7. On/off switch
8. Auto zero button
9. LED

PICO TA189 Specifications

General

Brand	PICO
Model	TA189
Category	Measuring Instruments
Language	English

Summary

SAFETY AND OPERATING GUIDELINES

General Safety Warnings

Important symbols and general instructions for safe operation and handling of the current clamp, including compliance and disposal.

Electric Shock Precautions

Specific safety measures to prevent electric shock during installation, use, and maintenance of the clamp.

TECHNICAL SPECIFICATIONS

Electrical Data

Detailed electrical parameters including current, range, sensitivity, accuracy, resolution, and gain variation.

General Data

Physical and environmental specifications such as conductor size, cable, operating, and storage temperatures.

OPERATING INSTRUCTIONS

Switch On and Auto Zero

Procedure for switching on the clamp, checking the LED, and nulling the output voltage using the Auto Zero button.

Current Measurement Process

Step-by-step guide for connecting the clamp to a display device and measuring current flow.

Auto Power OFF Feature

Details on the automatic power-off function and how to disable it for continuous operation.

Battery Replacement Procedure

Instructions for safely replacing the 9V battery when the operating voltage is low.

SAFETY STANDARDS AND USAGE CONDITIONS

Safety and EMC Standards

List of applicable safety (EN 61010) and EMC (EN 61326) standards, along with RoHS/WEEE compliance.

Safe Operating Conditions

Environmental conditions under which the product is designed to be safe, including temperature, humidity, and altitude.

Operator Responsibility and Maintenance

Clarifies operator responsibility, use of protective barriers, and regular inspection for damage.

WARRANTY INFORMATION

Product Warranty Details

Covers the one-year warranty period against defective material or workmanship and claim procedures.

Warranty Exclusions and Limitations

Specifies conditions that invalidate the warranty, such as using incorrect batteries, and limitations on liability.