CHAPTER 1: OVERVIEW 239 RELAYS
3 SERIES RETROFIT – INSTRUCTION MANUAL 15
1.7 239 relays
239 features are available in 339 relays as described in the table below:
Installed Relay Retrofit Relay
239 Motor Protection Relay 339 Motor Protection System
Feature
239
1
1. The 239 relay with MOD 509 is designed to provide ground directional protection. Similar pro-
tection can be obtained using the 339 relay neutral instantaneous protection using either the
current, voltage, or both.
339
2
2. For additional features, refer to the 339 Instruction Manual.
Protection &
Control
Undercurrent/minimum load: 37
Motor/load bearing, Overtemperature: 38
Mechanical jam:39
Current unbalance: 46
Stator winding overtemperature: 49
Phase short circuit: 50
Timed overload: 51
Ground fault instantaneous or definite
time: 50G/50N
Alarm relay: 74
Lockout and trip relay: 86/94
Undercurrent: 37
Current Unbalance: 46
Acceleration Time: 48
Thermal Protection: 49
IOC: 50G/SG(1), 50L, 50N(1), 50P(1)
TOC: 51N(1), 51P(1), 51R
Other Protection: 66, 86, 50BF
Monitoring &
Metering
Metering
Event Recording
Metering
Event Recording
Communications RS485 port USB
Serial (RS485) protocols: Modbus
RTU, DNP 3.0, IEC 60870-5-103
Ethernet protocols: Modbus TCP/IP,
DNP 3.0, IEC 60870-5-104, IEC
61850 GOOSE, IEC 61850
Hardware 2 inputs and 3 fixed inputs.
4 Form C contacts
6 Fixed LEDs
10 inputs
7 outputs (2 Form A, 5 Form C)
Configurable I/O
Configurable Logic
8 configurable and 4 fixed LEDs
10 fixed LED (drawout unit)
12 fixed LEDs (non-drawout unit)
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