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1MRG043109
RELEASE NOTE 1MRG043109 | 2023-06-21
Release of Relion 670, 650 and
SAM600-IO series
Version 2.2
The evolution of Relion 670, 650 and SAM600-IO series continues with this
update. The designation of this update is revision 2.2.6.
Release authorized by:
Lars Frisk 
Global Product Manager 
Hitachi Energy, Grid Automation 
 
RELEASE OF RELION 670, 650 AND SAM600-IO SERIES
1MRG043109 
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We are pleased to announce an update of:
 Relion 670 series version 2.2, our flagship protection and control IEDs
 Relion 650 series version 2.2, our off-the-shelf IED solution 
 SAM600-IO series version 2.2, our switchgear control unit for Digital Substation 
For 670 series, the update addresses customized and pre-configured IEDs covering all application areas within
the products REB/REC/RED/REG/REL/RER/RES and RET670. Relion 670 series covers a complete set of
applications from busbar protection, bay control, line protection, generator protection, railway application and
phasor monitoring to transformer protection. 
For 650 series, the updates are covering all application areas within the products REB/REC/RED/REL/REQ and
RET650. Relion 650 series covers the following applications: high-impedance busbar protection, bay control,
line protection and control, transformer protection and control and circuit breaker protection. 
The introduction of version 2.2 of 670, 650 and SAM600-IO series, expand the application areas especially for
digital substations, enhancing the system functionality and flexibility.
New features, benefits, and improvements
The following new features and their benefits, as well as the improvements on the existing functionality, are
introduced in this update:
Applications related – new functionality (see each entry for the details about the affected
product series):
 In REB670, new 4-zone 12-bay 3-ph busbar protection is available, including:
o Settable slope of differential protection 
o Sampled value (SV) based measurements from all 12 bays
o Up to 8 bays providing measurements by conventional CTs
o Possibility to mix conventional CTs and SV measurements
o Support of conditional blocking when used with IEC 61850-9-2LE. Eventual failure of one MU
blocks affected zone, while unaffected zones stay in service. 
 Synchrophasor data streaming and reporting according to IEC/IEEE 60255-118 (C37.118) and
IEEE1344 has been enabled in REB670, for up to 32 synchrophasors.
 The maximum PMU data streaming reporting rate has been increased in several product types that
support synchrophasor data streaming and reporting according to IEC/IEEE 60255-118 (C37.118) and
IEEE1344 (REB670, REC670, RED670, REG670, REL670, RET670). For 50 Hz setting the reporting
rate is increased to 100 fr/s, and for 60 Hz it is increased to120 fr/s. 
 Fault locator for mixed lines, with up to three ends is now available in 670 series.
 One additional instance of switch on to fault function has been added in RET670.
 Enhanced monitoring functions to measure DFT or RMS values are now available in 670 and 650
series.
 New voltage restrained time overcurrent protection VRPVOC has been added in RER670.
 Phase selection has been enhanced in high-speed distance protection ZMF(C)PDIS, in 670 series.
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 Increased setting range for time multiplier for inverse time delay (k-factor) is available in several current
related protection functions in 670 and 650 series.
 Increased set of logic functions in REC670 and RER670 for advanced application logics is now
available. The entire list can be found in respective product guides.
 Enhanced switch control function SCSWI has been released, applicable for 670, 650 and SAM600-IO: 
o Direct Operate with Enhanced Security has been added
o Additional control model which enables reservation separation for open and close directions
has been added.
 Improved phase preference logic PPL2PHIZ for operations in compensated / Petersen coil earthed
networks is now available. The improvements are applicable to all 670/650 series products supporting
this function. The number of instances has been increased to two, in RET670.
 The number of instances of ZCVPSOF available in RET670 has been increased to two optional
instances.
 Overvoltage function in RER670 with settable inverse time characteristic has been improved.
Applications related – improvements (see each entry for the details about the affected product
series):
 Added current and circuit breaker status check in fuse failure function FUFSPVC in 670 and 650
series, to improve functional accuracy in de-energized and no-load condition power lines. The delta
algorithm has been improved by adding further security for 3-phase disturbances, while at the same
time ensuring that the function will reset in an actual fault scenario. 
 A potential issue of the active reference impedance being out of range in the functions sensitive rotor
earth fault protection, injection based (ROTIPHIZ), and 100% stator earth fault protection, injection
based (STTIPHIZ), in REG670, has now been fixed.
 For 100% stator earth fault protection and injection based STTIPHIZ in REG670, the signal indicating
that the injection circuit is open (OPCIRC) has been decoupled from the BLOCK input of the function,
and is therefore now able to signal the open injection circuit even when the function is blocked.
 In 670 series, for the pole slip protection PSPPPAM, there was a risk of the IED failing to boot if the
values of StartAngle or TripAngle were set above 170 degrees. This has now been fixed.
 The high-speed differential protection L4PDIF in RED670 now has an improved algorithm for the
evolving fault detection, which was achieved by extending the angle calculation duration and by
increasing the angle limit for internal fault check if an internal fault is suspected.
 In 670 and 650 series, the stability of the frequency-related protection functions rate-of-change of
frequency protection SAPFRAC, underfrequency protection SAPTUF and overfrequency protection
SAPTOF has now been improved for the system disturbances involving changes of frequency of longer
duration.
 The association of the measured winding current with the selected parameter in the through fault
monitoring PTRSTHR function in 670 series has now been fixed. 
 In the estimation of transformer insulation life LOLSPTR function in 670 series, the minimal mass for
the winding cores, oil and tank has been defined, to avoid potential calculation issues in case the mass
is incorrectly set to 0 tonnes (t). 
 The application and runtime error issue observed when the breaker monitoring function SSCBR was
tested with the secondary injection while the breaker position was open has now been fixed, by adding
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further logical conditions that allow for such testing. This is applicable to 670, 650 and SAM600-IO
series.
 The stability of the open CT detection when used without negative sequence fault discriminator has
been improved in line differential protection L3CPDIF, L6CPDIF, LT3CPDIF and LT6CPDIF. This was
achieved by immediately resetting the open CT detection once the trip has been issued, as well as by
prolonging the blocking of the open CT detection after the reset of the trip signal. This fix is available in
the respective functions in RED670 and RED650.
 In the automatic voltage control for tap changer TR1ATCC and TR8ATCC, the hunting detection has
been improved, in a way that the set time window for hunting alarm doesn’t freeze, and the number of
tap operations is counted correctly, within the set time window. This fix is available in the respective
670 and 650 series products that support voltage control.
 In RET670 and REC670 with, in the automatic voltage control for tap changer for parallel transformers
TR8ATCC, the TIMERON signal that indicates that the raiseor lower command to the tap has been
activated, is now not set to logical one if the function is working as a follower.
 There was a risk of an undesired IED reboot in case the programable curve for overvoltage operation
in the multipurpose function CVGAPC resulted with a mathematic expectation (a negative
denominator). The formula has now been improved, and the IED reboot for this reason is no longer
possible. The improvement is available in 670 and 650 series. 
 In the overexcitation protection OEXPVPH, the activation of the operate timer based on the short
spikes of the positive sequence voltage (when inverted phase sequence voltages are connected to the
IED), that could in very rare cases cause an unwanted operation, has now been fixed. The fix is
available in the respective 670 and 650 series products.
 Also in the overexcitation protection OEXPVPH, the internal heat accumulation calculation has been
improved, so that the unreliable input data that can reach the function during the start-up of the IED is
discarded. The fix is available in the respective 670 and 650 series products.
 In REB670, in the switch status monitoring function BDCGAPC, the issue of the apparatus status being
incorrectly reported in the intermediate position after the IED restart, has now been corrected.
 In CMMXU, VMMXU and VNMMXU measurement functions the integral dead band reporting was in
some cases reporting the values that were under the set threshold. This has now been improved. The
improvement is available in 670 and 650 series.
Communications related – new functionality (applicable to 670, 650 and SAM600-IO series):
 Support for IEC 61850 Ed 2.1 is now available, together with the previous IEC 61850 Ed 1 and IEC
61850 Ed 2 of the standard.
 Support of single-mode Ethernet SFPs fiber optics is added. In addition of the existing multi-mode
optical LC connector for up to 2 km, and the RJ45 connector, three additional options for Ethernet
communication are now available:
o Optical LC connector, single-mode for up to 30 km
o Optical LC connector, single-mode for up to 60 km
o Optical LC connector, single-mode for up to 120 km
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Communications related – improvements (applicable to 670, 650 and SAM600-IO series):
 LDCM communication stability has been improved for the receiving channel, in situations when an
interruption occurs on the transmission channel on the same LDCM. Previously this could have
resulted in the prolonged trip times in the affected IED and has now been improved.
 LDCM working in 2 Mbit/s and echo mode could generate short intermittent blocking signals, resulting
in the associated functions being blocked for a few milliseconds, which could occur in situations when
the hardware-based time synchronization between the line-ends differ. This has now been fixed.
 The transition between line differential protection synchronization sources, when the time
synchronization is being switched from the GPS to the fast echo LDCM mode, has been improved, in
order to eliminate a risk of the line differential protection using unsynchronized current samples.
System related – new functionality (applicable to 670, 650 and SAM600-IO series):
 Support for SNMP for monitoring and device diagnostics is introduced.
 The RFC 5424 version of Syslog protocol, as defined by IETF, is now supported. 
 The number of calculated analog channels in disturbance recorder has been increased by the following
number of channels:
o 670 series: 30 additional channels
o 650 series: 10 additional channels
o SAM600-IO series: 10 additional channels
System related – improvements (applicable to 670, 650 and SAM600-IO series):
 Reading of disturbance recordings in the COMTRADE 2013 format has been improved, as in rare
cases users could experience difficulties reading files using IEC 60870-5-103, or via PCM600 tool.
 Disturbance recording performance has been improved when the maximum number of the recordings
(i.e. 200) is already present in the device, and when new recordings are being triggered within short
time intervals. 
 Libexpat is updated to version 2.5.0, which is the latest version available as of June 2023. Libexpat is
an open-source XML parser library component. 
 Zlib is a lossless data-compression open-source library component for use on virtually any computer
hardware and operating system. Zlibis updated to version 1.2.13. This is the latest available version as
of June 2023.
 TLS 1.2 is the only available protocol in 670 2.2.6. TLS 1.0 and TLS 1.1 protocols are discontinued. 
 A vulnerability that existed in the Relion update package signature validation, which could have been
exploited by gaining access to the system with security privileges and thereby attempting to update the
IED with a malicious update package, has been fixed. The same improvement will be released for all
earlier 670/650/SAM600-IO 2.2 revisions. 
 An earlier vulnerability in the IEC 61850 communication stack has been addressed. An attacker could
have exploited the vulnerability by using a specially crafted message sequence, to force the IEC 61850
MMS-server communication stack to stop accepting new MMS-client connections. The same
improvement will be released for all earlier 670/650/SAM600-IO 2.2 revisions.
 Syslog messages have been improved for including the access point number when a login is
performed. This fix will also be made available in all earlier 670/650/SAM600-IO 2.2 revisions.
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 When voltage measurements are connected in the opposite phase rotation, so that the positive
sequence voltage is close to zero, the frequency measurements will be blocked, in order to prevent the
wrong operation by the functions using the frequency measurements.
 In handling different setting groups, an additional setting has been added to ensure a clear hierarchy
when handling the setting groups through binary inputs, and through PCM600 / LHMI / IEC 61850.
Environment related – improvements (applicable to 670, 650 and SAM600-IO series):
 In order to reduce the overall footprint of our products, the USB memory stick, IED Connect, previously
always included in each IED delivery, now needs to be ordered separately.
 
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PCM600 and IED connectivity package for 670, 650 and
SAM600-IO series products version 2.2 
PCM600 version 3.0 with IED Connectivity package version 4.0 is required for communication with 670, 650
and SAM600-IO series version 2.2.6. IED Connectivity Package version 4.0 is a single Connectivity
Package for 670, 650 and SAM600-IO series. Relion 670, 650 and SAM600-IO series supports version 2.2
products as well as earlier versions of Relion 670, 650 and SAM600-IO series. For further details about the
Connectivity Package and its installation, please refer to the release note 1MRG042693.
Documentation and marketing material 
Product guides, technical manuals, technical summary sheets and brochures are available via Relion |
Hitachi Energy. 
Ordering and delivery 
All new orders for Relion 670, 650 and SAM600-IO series version 2.2 products are delivered with this latest
version. Existing orders will be processed with version/revision as acknowledged at order. If existing orders
need to be upgraded to this latest version, a request shall be made to SA-T sales. For current delivery times,
please get in touch with our sales contact at Hitachi Energy, Grid Automation Products.
Kind regards,
Lars Frisk Marko Kovacic 
Global Lead Product Manager Global Product Manager 
Hitachi Energy, Grid Automation Hitachi Energy, Grid Automation
Elisabeth Man Thomas Werner
Global Product Manager Global Product Manager
Hitachi Energy, Grid Automation Hitachi Energy, Grid Automation
Hitachi Energy 
Grid Automation Products
Nätverksgatan 3
721 36 Västerås, SwedenTel. +46 10 738 00 00
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