ALIND AR39 User manual

NUMERICAL UNDER/OVER & UNBALANCE
PROTECTION RELAY
AR39 [AN+ SERIES]
USER MANUAL
ALUMINIUM INDUSTRIES LIMITED
RELAYS DIVISION, THIRUVANANTHAPURAM

RELAYS DIVISION
AR39
Numerical OV, UV and Voltage unbalance
Protection Relay
CONTENTS
SAFETY REQUIREMENTS AR39-I
INTRODUCTION AR39-II
HANDLING INSTALLATIONS &CASE DIMENSIONS AR39-III
USER GUIDE AR39-IV
TECHNICAL DATA &CHARACTERISTIC CURVES AR39-V
TROUBLE SHOOTING AR39-VI
COMMUNICATION AR39-VII

Page 1of 7 AR39-I
RELAYS DIVISION
SAFETY
REQUIREMENTS

SAFETY REQUIREMENTS Page 2of 7AR39-I
RELAYS DIVISION
CONTENTS
INTRODUCTION
HEALTH AND SAFETY
SYMBOLS AND EXTERNAL LABELS ON THE RELAY
INSTALLING,COMMISSIONING AND SERVICING
_______
DECOMMISSIONING AND DISPOSAL
TECHNICAL SPECIFICATION FOR SAFETY

SAFETY REQUIREMENTS Page 3of 7AR39-I
RELAYS DIVISION
INTRODUCTION
Before using this product, be sure to read this chapter carefully.
This chapter describes safety precautions when using the relay. Before installing and using the
equipment, read and understand this chapter thoroughly.
It’s not a secret – electricity can be dangerous and when things go wrong lives can be at stake!
Electrical engineers are Industrial safety doctors, so it’s our duty to keep employees health and
maintain a quality of life that we all deserve by providing safe work practices to avoid electrical
accidents.
How much electricity is dangerous?????
CURRENT
EFFECT
0.5 –3mA
Tingling sensations
3 –10mA
Muscle contractions (painful)
10 –40mA
“can’t let go” phenomena
40 –75mA
Respiratory paralysis (possibly fatal)
75 –200mA
Ventricular fibrillation (likely fatal)
200 –500mA
Heart clamps tight
>1.5A
Tissue and organs began to burn
Fact: A 15 amp circuit breaker was designed to protect equipment –not people!
The relay is developed with zero percentage of risk factor by its own design. The current carrying
paths and circuits are isolated from the metal case and structure. Suitable clearance depending on
the type of insulation required for different classes are provided.
The relay confirms to Product safety requirement standard IEC 60255-27.

SAFETY REQUIREMENTS Page 4of 7AR39-I
RELAYS DIVISION
HEALTH AND SAFETY
It deals with the handling of relay in proper way. An individual to be considered as ‘qualified’ with
regard to certain equipment in the workplace, but ‘unqualified’ as to other equipment. “An employee,
who is undergoing on the job training and who, in the course of such training, has demonstrated the
ability to perform duties safely at his or her level of training and who is under the direct supervision
of a qualified person also considered to be a qualified person for the performance of those duties.”
The following requirements must be met, in the order given, before circuits or equipments are re-
energized, even temporarily.
People handling the equipment should be aware about the relay safety handlet.
Ensure that the product is in the off condition before working on the conducting or terminal
side.
A qualified person must conduct tests and visual inspections, as necessary, to verify that tools
electrical jumpers, shorts, grounds and other such devices have been removed, so that the
circuits and equipments can be safely re-energized.
Employees exposed to the hazards associated with re-energizing the circuit or equipment must
be warned to stay clear of the circuits and equipment.
Each lock and tag must be removed by the employee who applied it or someone else under
that employee’s direct supervision.
A visual determination that all employees are clear of the circuits and equipments must be
made.
For any queries related to relays, feel free to contact ALIND.

SAFETY REQUIREMENTS Page 5of 7AR39-I
RELAYS DIVISION
SYMBOLS AND LABELS USED IN THE RELAY
1. FRONT SIDE
Caution: refer to equipment
documentation
Caution: risk of electric shock
Caution: Over voltage
Cat.III
2. REAR SIDE
Protective Conductor (*Earth) terminal
Functional/Protective Conductor (*Earth) terminal.
CMOS Battery provided for the RTC (Real Time Clock) purpose. Confirm
polarity of the battery while replacing.
IEC 61850 sticker

SAFETY REQUIREMENTS Page 6of 7AR39-I
RELAYS DIVISION
WARNING
Current transformer circuit
Never allow the current transformer (CT) secondary circuit connected to this
equipment to be opened while the primary system is live. Opening the CT circuit
will produce a dangerous high voltage.
Exposed terminals
Do not touch the terminals of this equipment while the power is on, as the high
voltage generated is dangerous.
Residual voltage
Hazardous voltage can be present in the DC circuit just after switching off the
DC power supply. It takes about 30 seconds for the voltage to discharge.
CAUTION
Earth
Earth the earthing terminal of the equipment securely.
Operation conditions
Use the equipment within the range of ambient temperature, humidity and dust
as detailed in the specification and in an environment free of abnormal vibration.
Ratings
Before applying AC voltage and current or DC power supply to the equipment,
check that they conform to the equipment ratings.
Printed circuit board
Do not attach and remove the printed circuit board while the DC power to the
equipment is on, as this may cause the equipment to malfunction.
External circuit
When connecting the output contacts of the equipment to an external circuit,
carefully check the supply voltage used and prevent the connected circuit from
overheating.
Connection cable
Carefully handle the connection cable without applying excessive force.

SAFETY REQUIREMENTS Page 7of 7AR39-I
RELAYS DIVISION
Modification
Do not modify this equipment, as this may cause the equipment to malfunction,
and any such cases, warranty may be affected.
DECOMMISIONING AND DISPOSAL
De-commissioning
The supply input (auxiliary) for the equipment may include capacitors across the
supply or to earth. To avoid electric shock or energy hazards, after completely
isolating the supplies to the equipment, the capacitors should be safely
discharged via the external terminals prior to de-commissioning.
ANGER
Disposal
When disposing of this equipment, do so in a safe manner according to local
regulations. It is recommended that incineration and disposal to water courses is
avoided. Ensure the relay is in de energized condition and take precautions to
avoid short circuits.
TECHNICAL SPECIFICATIONS FOR SAFETY
1. Protective class
IEC 60255-27:2005 Class I (This equipment requires a protective
conductor (earth) connection to ensure
user safety.
2. Environment
IEC 60255-27:2005 Pollution degree 2 (Normally only non-conductive pollution
occurs except occasionally a temporary
conductivity caused by condensation is to be
expected.)
3. Overvoltage Category
IEC 60255-27:2005 Category III (The auxiliary energizing circuits of the
equipment are connected to a common battery,
common mode transient voltages of a relatively
high value may appear on the supply leads, and
differential mode voltages may arise from
switching in other circuits connected to the
same battery source.
4. Contact data Test voltage across open contact: 1 kV DC for
1 min source.

Page 1of 6AR39-II
RELAYS DIVISION
INTRODUCTION